PMC9273431_01
A slit-lamp photo revealing a pigmented iris mass (white arrow) with an extrascleral spread (dashed arrow).
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fig1
The ophthalmic examination of the right eye revealed a darkly pigmented extrascleral lesion in the lower nasal quadrant (Figure 1).
Gonioscopy showed a circumferential pigmented angle infiltration.
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PMC9273431_01_CRIOPM2022-4840380.002.jpg
fig2
The gonioscopy revealed a pigmented thickening of the iris base in the lower nasal quadrant and a 300  pigmented angle infiltration (Figure 2).
Microscopical examination demonstrating iris melanoma with extension in the anterior angle, infiltration of the trabecular meshwork and extrascleral extension (black arrow) (hematoxylin and eosin, original magnification, 40x).
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fig3
The histology report confirmed iris ring melanoma, which was growing in the root area of the iris, on the surface of the anterior chamber angle, and in the trabecular meshwork in a nearly closed circle, from 10 to 8 o'clock (Figure 3).