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TOXOPLASMOSIS

Originally posted on @retina.rocks 08/24/2023

This 22YO male presented with several days of central blurred vision in his left eye. There was no prior ocular or medical history. Vision was 20/25 in his normal right eye and 20/25 in his left eye.

Color photography shows a variably pigmented comma-shaped colobomatous scar in the superior macula. A tiny depigmented scar is noted along its inferonasal edge. OCT scanning through this lesion showed no fluid (not shown).

He returned about 2 months later, complaining of increasing vision loss in his eye. Vision had decreased to 20/400. A faint area of subretinal pigment is now noted.

Optos fluorescein angiography shows leaking macular neovascularization (MNV) within this region. Swept-source OCT confirms a type 2 MNV (located above the RPE).

Intravitreal Avastin was injected.

Learning Points:
Virtually any disorder that affects the RPE-Bruch membrane layer can cause MNV, the most common being age-related macular degeneration, ocular histoplasmosis, idiopathic high myopia (lacquer cracks), trauma (choroidal rupture), and angioid streaks.