Chorioretinitis

Chorioretinitis is an inflammatory condition affecting the choroid and retina of the cat's eye. The choroid is the vascular layer situated between the retina and the sclera, providing essential blood supply and nutrients to the outer layers of the retina. When inflammation occurs in this delicate tissue along with the retina, it can significantly impact a cat's vision and overall eye health. This condition is relatively uncommon as a primary diagnosis but frequently occurs secondary to systemic diseases that affect cats. Both young and adult cats can develop chorioretinitis, though it is more commonly diagnosed in cats with underlying infectious or inflammatory conditions.

The causes of chorioretinitis in cats are diverse and often linked to systemic infections or immune-mediated conditions. Infectious agents including Toxoplasma gondii, feline infectious peritonitis virus, fungal organisms, and various bacterial pathogens can trigger inflammation in the choroid and retina. The condition develops when these pathogens or the immune response they provoke causes damage to the delicate vascular and neural tissues of the eye. In some cases, the inflammation may be idiopathic, meaning no underlying cause can be identified despite thorough diagnostic investigation.

The impact of chorioretinitis on a cat's health can be substantial, particularly if left untreated or if the underlying cause remains unaddressed. Cats may experience varying degrees of vision impairment ranging from mild visual disturbances to complete blindness in severe cases. The condition can affect one or both eyes and may progress rapidly depending on the underlying cause. Beyond vision loss, chorioretinitis often indicates the presence of a serious systemic illness that requires comprehensive medical attention, making early detection crucial for overall feline health.

Chorioretinitis is generally treatable, particularly when the underlying cause can be identified and appropriately managed. Early detection and intervention significantly improve the prognosis for both visual recovery and overall health outcomes. Treatment typically involves addressing the primary condition causing the inflammation while providing supportive care for the affected eye tissues. Veterinary care is essential for cats suspected of having chorioretinitis, as proper diagnosis requires specialized ophthalmic examination and the condition often signals more widespread disease requiring comprehensive evaluation and treatment.

The primary causes of chorioretinitis in cats are predominantly infectious agents that reach the eye through the bloodstream. Toxoplasma gondii, the parasitic organism responsible for toxoplasmosis, is one of the most common causes of feline chorioretinitis. When cats become infected with this parasite, the organisms can migrate to various tissues including the eye, where they provoke an inflammatory response in the choroid and retina. Feline infectious peritonitis virus represents another significant cause, particularly the non-effusive form of FIP which commonly produces ocular manifestations including chorioretinitis. Fungal infections such as cryptococcosis, histoplasmosis, and blastomycosis can also affect the eye, causing inflammation that damages the choroidal and retinal tissues.

Genetic and hereditary factors do not typically play a direct role in the development of chorioretinitis. Unlike some feline eye conditions that have clear breed predispositions, chorioretinitis occurs as a result of infectious or inflammatory processes rather than inherited genetic defects. However, some cats may have immune system variations that make them more susceptible to the infections that lead to chorioretinitis. Cats with compromised immune systems, whether due to concurrent illness, immunosuppressive medications, or conditions like feline immunodeficiency virus or feline leukemia virus infection, may be at increased risk for developing the infections that cause chorioretinitis.

Environmental and lifestyle factors significantly influence a cat's risk of developing chorioretinitis through exposure to causative organisms. Outdoor cats face greater exposure to Toxoplasma gondii through hunting and consuming infected prey such as rodents and birds. Cats living in geographic regions where fungal infections are endemic have increased risk of developing fungal chorioretinitis. Stress and poor nutrition can compromise immune function, making cats more vulnerable to infections. Multi-cat households or environments with high cat population density may facilitate the spread of infectious agents including those causing FIP.

Several risk factors predispose cats to chorioretinitis beyond direct pathogen exposure. Young cats and kittens with immature immune systems may be more susceptible to severe infections that affect the eye. Conversely, older cats may have weakened immune responses that allow infections to establish and spread to ocular tissues. Cats with pre-existing systemic diseases, particularly those affecting the immune system, face elevated risk. Recent stressful events such as rehoming, surgery, or the introduction of new household members can trigger reactivation of latent infections or compromise immune surveillance.

The mechanism by which chorioretinitis develops involves the hematogenous spread of infectious organisms or inflammatory mediators to the eye. When pathogens enter the bloodstream, they can breach the blood-ocular barrier and establish infection within the choroid's rich vascular network. The immune response to these invaders causes inflammation characterized by infiltration of inflammatory cells, vascular damage, and disruption of the normal choroidal and retinal architecture. This inflammatory cascade damages photoreceptors and the retinal pigment epithelium, leading to the characteristic lesions visible during ophthalmic examination. In immune-mediated cases, the body's own immune cells mistakenly target ocular tissues, causing similar inflammatory damage without the presence of active infection.

Early warning signs of chorioretinitis in cats can be subtle and easily overlooked, particularly because cats are masters at hiding illness and discomfort. Initial symptoms may include slight changes in how a cat navigates familiar environments, such as hesitation before jumping or minor missteps when moving around furniture. Some cats may show increased sensitivity to bright light, seeking out darker areas of the home or squinting when exposed to normal lighting conditions. The pupils may appear slightly different in size between the two eyes, or one eye may not respond to light changes as quickly as the other. These early signs often develop gradually over days to weeks, and many owners only recognize them in retrospect after more obvious symptoms emerge.

Common symptoms of chorioretinitis become more apparent as the condition progresses. Affected cats frequently display visible changes in their eyes, including cloudiness or haziness within the eye, altered pupil appearance, or visible inflammation. Many cats develop noticeable vision problems, bumping into objects or showing reluctance to move in unfamiliar spaces. Eye discharge, excessive tearing, or redness around the eye may occur, though these signs can be subtle. Some cats exhibit squinting or keep the affected eye partially closed, indicating discomfort or light sensitivity. The symptoms may affect one or both eyes, and bilateral involvement often suggests systemic disease.

Behavioral changes associated with chorioretinitis reflect both the visual impairment and general malaise that often accompanies the underlying systemic condition. Affected cats may become less active, showing decreased interest in play or hunting behaviors that require visual acuity. Changes in appetite are common, with some cats eating less due to feeling unwell from systemic illness. Cats may become more clingy or conversely more withdrawn, depending on their personality and how they cope with feeling ill. Litter box habits may change if cats have difficulty navigating to the box or if they associate the box location with discomfort. Some cats vocalize more, particularly at night when reduced vision is more challenging.

Physical signs observable during examination include characteristic changes visible within the eye. The pupils may appear dilated and respond poorly or not at all to light stimulation. Inflammatory cells may be visible floating in the anterior chamber or vitreous humor of the eye. The retina may show areas of detachment, hemorrhage, or characteristic inflammatory lesions when examined with appropriate instruments. Owners may notice that their cat's eyes appear different in color or clarity compared to their normal appearance. In advanced cases, the entire eye may appear cloudy or discolored. Cats may hold their head tilted or have difficulty tracking moving objects with their eyes.

Symptom progression in chorioretinitis typically follows the course of the underlying disease. Acute infections may cause rapid deterioration of vision over days, while chronic inflammatory conditions may produce gradual visual decline over weeks to months. Initially focal lesions may spread to involve larger areas of the retina and choroid. Inflammation that begins in one eye may eventually affect the second eye, particularly in systemic infectious conditions. Without treatment, progressive damage to the retina leads to permanent scarring and irreversible vision loss. The speed of progression varies considerably depending on the causative agent and the cat's immune response.

Emergency symptoms requiring immediate veterinary attention include sudden complete vision loss, severe eye pain indicated by pawing at the eye or reluctance to have the head touched, obvious bleeding within the eye, or significant swelling of the eye. If the eye appears to be bulging or significantly different in size from the other eye, emergency care is warranted. Systemic symptoms accompanying eye changes, such as high fever, seizures, difficulty breathing, or collapse, indicate potentially life-threatening conditions requiring urgent intervention. Any sudden change in a cat's vision or eye appearance should prompt immediate veterinary consultation, as early treatment often determines the outcome for both visual recovery and overall health.

The initial examination for suspected chorioretinitis begins with a comprehensive physical assessment to evaluate overall health and identify signs of systemic disease. The veterinarian will gather a detailed history including the cat's vaccination status, lifestyle, potential exposure to infectious agents, and timeline of symptom development. A thorough general examination assesses lymph nodes, body temperature, respiratory and cardiovascular function, and neurological status, as chorioretinitis frequently occurs alongside systemic illness. The ophthalmic portion of the examination includes evaluation of pupillary responses, assessment of vision through tracking tests and obstacle courses, and examination of the external eye structures for signs of inflammation or discharge.

Diagnostic testing for chorioretinitis involves both ophthalmic-specific evaluations and systemic disease screening. Detailed fundoscopic examination using an ophthalmoscope or specialized imaging allows visualization of the retina and choroid, revealing characteristic inflammatory lesions, areas of retinal detachment, or hemorrhages. Slit-lamp examination evaluates the anterior segment of the eye for inflammatory cells or other abnormalities. Ocular ultrasound may be performed if the view to the back of the eye is obscured by inflammation or if retinal detachment is suspected. Blood tests including complete blood count, serum chemistry panel, and specific infectious disease testing for toxoplasmosis, FIP, fungal organisms, and feline leukemia and immunodeficiency viruses help identify the underlying cause.

Differential diagnosis for chorioretinitis includes several other conditions that can produce similar clinical signs. Uveitis affecting primarily the anterior portion of the eye may have some overlapping features but typically involves different structures. Retinal detachment from causes other than inflammation, such as hypertension, must be considered. Ocular lymphoma and other neoplastic conditions can mimic inflammatory eye disease. Hypertensive retinopathy, common in older cats with kidney disease or hyperthyroidism, produces retinal changes that may resemble chorioretinitis. Accurate differentiation between these conditions requires careful ophthalmic examination and appropriate diagnostic testing to ensure correct treatment is initiated.

Diagnosis confirmation typically relies on the combination of characteristic ophthalmic findings and identification of an underlying cause through systemic testing. The presence of multifocal inflammatory lesions in the choroid and retina, visible as areas of altered pigmentation, cellular infiltrates, or retinal elevation, supports the diagnosis. Identification of a causative organism through serology, polymerase chain reaction testing, or culture confirms the etiology and guides treatment selection. In some cases, aqueous or vitreous humor sampling may be performed to analyze fluid from within the eye for inflammatory cells, proteins, or pathogen identification. Grading the severity of retinal involvement helps establish prognosis for visual recovery and guides treatment intensity. Results from diagnostic testing are typically available within several days, though some specialized tests may require longer processing times.

Emergency and immediate treatment for chorioretinitis focuses on reducing inflammation and preventing further damage to delicate ocular structures while addressing any life-threatening aspects of the underlying systemic condition. If the cat presents with severe systemic illness, stabilization with intravenous fluids, temperature regulation, and supportive care takes priority. Anti-inflammatory therapy is often initiated promptly to limit ongoing damage to the retina and choroid. Topical ophthalmic medications may be started to address any concurrent anterior segment inflammation. Pain management is provided as needed, as inflammation can cause significant discomfort. The specific approach depends on the suspected underlying cause and the overall stability of the patient.

Medical management of chorioretinitis centers on treating the underlying cause while controlling ocular inflammation. For toxoplasmosis-associated chorioretinitis, antiprotozoal medications such as clindamycin or a combination of trimethoprim-sulfadiazine are prescribed for several weeks to months. Fungal infections require prolonged courses of antifungal medications, with the specific drug selected based on the identified organism and its susceptibility patterns. Systemic corticosteroids or other immunosuppressive medications may be used to control inflammation, though their use must be carefully considered when infectious causes are present or suspected. Anti-inflammatory eye drops help manage local inflammation and prevent secondary complications such as glaucoma or synechiae formation.

Surgical options for chorioretinitis are limited compared to medical management, as the condition primarily involves inflammation rather than structural abnormalities amenable to surgical correction. However, surgery may be necessary to address specific complications. Severe retinal detachment that does not respond to medical therapy may require surgical reattachment, though outcomes for inflammatory detachments are often guarded. If secondary glaucoma develops and cannot be controlled medically, surgical intervention may be needed to preserve the eye or relieve pain. In cases where the eye is blind, painful, and unresponsive to treatment, enucleation may be recommended to eliminate a source of ongoing discomfort and potential systemic complications. The decision for any surgical intervention involves careful consideration of the cat's overall health, prognosis, and quality of life.

Supportive care plays a vital role in managing cats with chorioretinitis and their underlying conditions. Nutritional support ensures cats maintain adequate caloric intake during illness and recovery. Environmental modifications help visually impaired cats navigate safely, including keeping furniture in consistent locations and using scent markers. Pain management addresses any discomfort from ocular inflammation or systemic disease. Regular monitoring of eye pressure helps detect secondary glaucoma early. Supportive care for the underlying systemic condition, whether infectious or inflammatory, complements the specific treatments targeting the eyes.

Alternative and complementary treatments may support conventional therapy for chorioretinitis but should not replace veterinary-prescribed medications. Omega-3 fatty acid supplementation may provide anti-inflammatory benefits that complement medical therapy. Antioxidant supplements theoretically support ocular health, though specific evidence for chorioretinitis is limited. Stress reduction through environmental enrichment and maintaining routine supports immune function. Acupuncture has been used in some cases to support overall wellness during treatment. Any complementary approaches should be discussed with the veterinarian to ensure they do not interfere with primary treatment or mask important symptoms.

Treatment decisions for chorioretinitis consider multiple factors including the identified underlying cause, severity of ocular involvement, presence of systemic symptoms, and the cat's overall health status. The cost of long-term medication, particularly for chronic infectious conditions, influences treatment planning and may affect compliance. Owner ability to administer medications, attend follow-up appointments, and monitor for changes impacts treatment selection. Expected outcomes vary significantly based on the cause, with some infections responding well to treatment while others, such as FIP-associated chorioretinitis, carry more guarded prognoses. The veterinarian will discuss realistic expectations for visual recovery and long-term management with the owner to guide shared decision-making.

Recovery timeline for chorioretinitis varies considerably depending on the underlying cause and the extent of retinal damage at the time of diagnosis. Cats with infectious chorioretinitis typically require several weeks to months of antimicrobial therapy before the inflammation fully resolves. During the first one to two weeks of treatment, owners may notice improvement in systemic symptoms such as appetite and energy level. Ocular inflammation usually begins to decrease within two to four weeks of appropriate therapy, though visible improvement in eye appearance may take longer. Complete resolution of inflammatory lesions may require three to six months or longer, and follow-up examinations monitor progress throughout the treatment period.

Post-treatment care involves continued medication administration as prescribed, often for extended periods to ensure complete elimination of infectious organisms or adequate control of inflammatory processes. Activity restrictions are generally minimal unless the cat has significant vision impairment that makes certain activities dangerous. Owners should prevent access to hazardous areas such as balconies or staircases without barriers until the extent of visual recovery is determined. Medication schedules may involve multiple daily doses of oral and topical medications, requiring owner commitment and organization. Follow-up appointments occur frequently during initial treatment, often every two to four weeks, then less frequently as the condition stabilizes.

Prognosis for chorioretinitis depends on several factors including the underlying cause, duration of inflammation before treatment, extent of retinal involvement, and response to therapy. Cats with early-diagnosed, focal chorioretinitis from treatable infections generally have favorable prognoses for visual recovery. Extensive retinal involvement, particularly with detachment or widespread scarring, carries a more guarded prognosis as damaged photoreceptors do not regenerate. The prognosis for systemic recovery depends entirely on the underlying condition, with some infections being fully curable while others, such as FIP, historically carried poor prognoses though newer treatments have improved outcomes. Quality of life can remain good even with permanent vision loss, as cats adapt well to visual impairment in familiar environments.

Long-term outlook for cats recovering from chorioretinitis involves ongoing monitoring and potential need for continued management. Some cats achieve complete resolution with full visual recovery, while others retain some degree of permanent vision impairment. Recurrence is possible, particularly with conditions like toxoplasmosis where organisms may remain dormant in tissues and reactivate during periods of immune suppression. Regular veterinary check-ups help detect any recurrence early. Cats with permanent retinal scarring may have stable but reduced vision long-term. Most cats with residual visual deficits adapt remarkably well and maintain excellent quality of life with appropriate environmental management and owner awareness of their limitations.

Primary prevention of chorioretinitis focuses on reducing exposure to the infectious agents most commonly responsible for the condition. Keeping cats indoors significantly reduces their risk of contracting toxoplasmosis through hunting and consuming infected prey. Indoor housing also limits exposure to fungal organisms prevalent in soil and decaying organic matter in endemic regions. Preventing contact with cats of unknown health status reduces risk of FIP virus exposure, particularly important for young kittens. Maintaining good general health through proper nutrition, regular veterinary care, and stress reduction supports immune function and the cat's ability to resist or control infections.

Environmental prevention strategies address specific risk factors for infectious causes of chorioretinitis. Keeping litter boxes clean and disposing of waste promptly reduces environmental contamination with Toxoplasma oocysts, protecting both cats and their human family members. Avoiding feeding raw meat eliminates a potential source of Toxoplasma infection. In areas endemic for fungal diseases, limiting outdoor access and avoiding areas with heavy soil disturbance or bird droppings reduces exposure risk. Providing a low-stress environment through adequate resources, vertical space, and hiding spots in multi-cat households helps maintain immune health and reduces disease transmission.

Dietary prevention for chorioretinitis involves feeding high-quality commercial cat foods that meet all nutritional requirements and supporting overall immune health. Complete and balanced nutrition provides the vitamins, minerals, and antioxidants necessary for optimal immune function and tissue health. Avoiding raw or undercooked meat prevents potential exposure to Toxoplasma tissue cysts. Some evidence suggests omega-3 fatty acid supplementation may support eye health and provide anti-inflammatory benefits, though direct prevention of chorioretinitis has not been established. Maintaining healthy body weight through appropriate portion control supports overall health and immune function.

Health maintenance practices form the foundation of chorioretinitis prevention. Regular veterinary wellness examinations allow early detection of systemic diseases that could potentially involve the eyes. Vaccination against preventable diseases maintains overall health, though no vaccine directly prevents chorioretinitis. Appropriate testing and management of retroviral infections, specifically feline leukemia virus and feline immunodeficiency virus, helps maintain immune competence. Prompt treatment of any illness prevents progression to systemic disease that could affect the eyes. Parasite prevention programs reduce overall pathogen exposure and maintain health.

Early intervention when problems arise significantly impacts outcomes for chorioretinitis. Owners should learn to recognize subtle signs of eye problems including squinting, light sensitivity, pupil changes, or behavioral changes suggesting vision problems. Any observed eye abnormalities warrant prompt veterinary attention rather than watchful waiting. Cats with known risk factors, such as positive FIV status or recent introduction to a multi-cat environment, benefit from heightened monitoring for early signs of illness. Establishing a relationship with a veterinarian allows for rapid evaluation when concerns arise. When systemic illness occurs, thorough ophthalmic examination as part of the workup may detect early chorioretinitis before significant vision loss occurs.

Daily management of a cat with chorioretinitis or recovering from the condition requires attention to medication administration, environmental safety, and monitoring for changes. Owners may need to administer multiple medications including oral antimicrobials, anti-inflammatory drugs, and topical eye medications. Establishing a consistent medication schedule helps ensure compliance and allows the cat to anticipate and become accustomed to treatment times. Keeping a medication log helps track doses and monitor for any adverse effects. Daily observation of the cat's eyes, behavior, and appetite provides early warning of any changes that warrant veterinary attention. Gentle cleaning of any eye discharge maintains comfort and allows better visualization of the eye's condition.

Home environment modifications support cats with visual impairment from chorioretinitis. Keeping furniture and important resources such as food bowls, water dishes, and litter boxes in consistent locations allows cats to navigate using spatial memory. Removing or padding sharp corners on furniture reduces injury risk. Providing nightlights in key areas may help cats with partial vision navigate in dim conditions. Blocking access to dangerous areas such as open staircases, balconies, or pools prevents accidents. Scent markers using safe extracts or the cat's own facial pheromones at important locations help orientation. Avoiding rearranging furniture and alerting the cat before moving objects in their path supports confidence and safety.

Maintaining quality of life for cats with chorioretinitis involves adapting activities and interactions to their visual capabilities. Many cats enjoy play and interaction even with reduced vision, responding well to toys that make sound or have interesting textures. Verbal cues alert cats to the owner's approach, preventing startling. Gentle physical contact provides reassurance and maintains the human-animal bond. Mental stimulation through food puzzles, scent games, or training exercises keeps cats engaged without requiring visual acuity. Outdoor access, if previously allowed, may need reconsideration based on visual status and ability to avoid hazards and predators.

Monitoring and ongoing veterinary care ensure appropriate management of chorioretinitis over time. Owners should watch for signs of recurrence including increased squinting, light sensitivity, changes in pupil appearance, or behavioral changes suggesting vision changes. Regular veterinary examinations, typically every three to six months during stable periods, allow professional assessment of eye health and adjustment of any ongoing medications. Monitoring for side effects of long-term medications, particularly corticosteroids, includes watching for increased thirst, urination, appetite, and weight changes. Any new symptoms, whether eye-related or systemic, warrant prompt veterinary evaluation.

Caregiver support resources help owners manage the challenges of caring for a cat with chorioretinitis. The financial burden of diagnostic testing, medications, and follow-up care can be significant, and discussing cost expectations with the veterinary team helps with planning. Pet insurance, if obtained before diagnosis, may cover portions of treatment costs. Online support groups and forums connect owners of cats with eye diseases, providing emotional support and practical advice. Veterinary social workers or practice-based support staff can help connect owners with financial assistance resources if needed. Taking breaks and maintaining personal wellbeing allows owners to provide sustained, high-quality care for their cats over the long term required for managing chronic conditions.

Chorioretinitis does not demonstrate strong breed predisposition in cats, as it typically occurs secondary to infectious or inflammatory conditions that can affect any cat regardless of breed. However, breeds with known susceptibility to conditions that cause chorioretinitis may be indirectly at higher risk. Purebred cats from catteries or breeding programs may face increased exposure to feline infectious peritonitis virus due to the multi-cat environment and stress associated with showing or breeding. Certain breeds have documented higher rates of FIP, though the complex genetics and environmental factors involved make definitive breed risk assessment difficult. Young purebred cats entering new homes face stress-related immune suppression that may increase susceptibility to various infections.

Mixed breed cats and domestic shorthairs or longhairs constitute the majority of feline chorioretinitis cases simply because they represent most of the cat population. Outdoor cats and those with hunting behaviors face elevated risk of toxoplasmosis exposure regardless of breed. Cats of any breed living in geographic regions endemic for fungal diseases have increased risk of fungal chorioretinitis. Shelter cats and those from feral colonies may have higher exposure to infectious agents and may present with more advanced disease due to delayed veterinary care. Cats with concurrent retroviral infections, regardless of breed, face increased susceptibility to secondary infections affecting the eyes.

Screening recommendations for chorioretinitis relate primarily to monitoring cats at risk due to lifestyle or health factors rather than breed-specific testing. Cats newly adopted from shelters or multi-cat environments benefit from comprehensive health evaluation including ophthalmic examination. Cats with positive FeLV or FIV status warrant regular monitoring for signs of secondary infections. In areas with endemic fungal diseases, heightened awareness and prompt evaluation of respiratory or systemic signs may allow early detection before ocular involvement. When purchasing purebred kittens, selecting breeders who test for FeLV and FIV and maintain good hygiene practices reduces, though does not eliminate, risk of infectious diseases that can cause chorioretinitis.

Chorioretinitis commonly co-occurs with other manifestations of the systemic diseases that cause it. Cats with toxoplasmosis may develop concurrent neurological signs, respiratory disease, or hepatitis alongside their ocular inflammation. Feline infectious peritonitis frequently causes uveitis affecting the anterior portion of the eye in addition to chorioretinitis, and may involve the brain, liver, kidneys, and other organs. Fungal infections causing chorioretinitis often simultaneously affect the respiratory system, skin, or central nervous system. Managing these related conditions requires comprehensive treatment addressing all affected organ systems while considering potential drug interactions and the cumulative burden of multiple medications.

Conditions with symptoms similar to chorioretinitis include various other causes of posterior segment inflammation or retinal disease. Hypertensive retinopathy, common in older cats with kidney disease or hyperthyroidism, causes retinal hemorrhages and detachment that may resemble inflammatory changes. Primary uveitis affecting the anterior segment may have overlapping symptoms though the location of primary involvement differs. Ocular lymphoma can mimic inflammatory disease and requires different treatment approaches. Retinal detachment from non-inflammatory causes produces similar visual deficits though the fundoscopic appearance differs. Accurate differentiation guides appropriate treatment and affects prognosis.

Potential complications of chorioretinitis include permanent vision loss from retinal scarring or chronic detachment. Secondary glaucoma may develop if inflammation disrupts normal aqueous humor drainage, causing painful elevation of intraocular pressure. Cataract formation can occur secondary to chronic inflammation, further compromising vision. Phthisis bulbi, or shrinkage of the globe, represents end-stage sequelae of severe, uncontrolled inflammation. Synechiae, or adhesions between ocular structures, can develop and cause ongoing problems with pupil function and aqueous flow. Early aggressive treatment and regular monitoring help prevent or detect these complications, allowing intervention before permanent damage occurs.