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🔍 Toxoplasmosis Scar in the Eye

A toxoplasmosis scar is a permanent scar left on the retina after an infection caused by the parasite Toxoplasma gondii. These scars often appear as well-defined, pigmented retinal lesions during an eye examination.

If the scar is located away from the macula (the center of vision), a person may have little or no visual symptoms. However, when the macula is affected, it can lead to significant and irreversible vision loss.

Regular eye examinations are important, especially for individuals with a history of ocular toxoplasmosis, as the disease can reactivate and cause further retinal damage.

👁️ Protect your sight—early diagnosis and proper follow-up can make a difference.

Subretinal fibrosis is the formation of scar tissue beneath the retina, often representing the final stage of neovascular age-related macular degeneration (nAMD) or chronic inflammation. This condition causes permanent damage to the photoreceptors and central vision. Symptoms include whitish lesions in the macula detected through fundus examination and OCT, and it is often resistant to anti-VEGF therapy.

Key Details of Subretinal Fibrosis

Main Cause
A sequel of nAMD, where excessive extracellular matrix (collagen) deposition occurs after chronic inflammation or bleeding.

Symptoms & Impact
Significant reduction in visual acuity (central scotoma) and frequent resistance to standard anti-VEGF injections, leading to permanent severe vision loss.

Diagnosis
Performed through fundus examination (showing white-yellowish clumps) and Optical Coherence Tomography (OCT), which reveals dense hyper-reflective lesions beneath the retina.

Risk Factors
Besides nAMD, the risk increases in cases of severe inflammation, history of eye injury, and diseases such as Progressive Subretinal Fibrosis and Uveitis Syndrome.

Management
There is currently no effective treatment to remove established fibrosis. Current focus is on prevention through timely anti-VEGF therapy for nAMD and ongoing research on HIF (Hypoxia-Inducible Factor) inhibitors.

Prevention & Management

Although fibrosis is difficult to reverse, management strategies include:

Anti-VEGF Therapy: Given as early as possible to reduce fluid accumulation and the risk of scar tissue formation in nAMD.

Lifestyle: Stop smoking, maintain a diet rich in antioxidants (such as spinach and broccoli), and protect the eyes from UV rays.

Monitoring: Routine eye examinations by an eye specialist to monitor the progression of scar tissue.