A 32-year-old male presented with vision of 20/20 in both the eyes. Right eye showed pigmented deposits on the anterior capsule of the lens [Fig. 1a and b] resembling rice granules [Fig. 1c]. As the deposits were not in the visual axis, patient was asked to follow-up regularly.
Figure 1.
(a) Diffuse slitlamp illumination of right eye showing annular distribution of pigmented stars. (b) Magnified picture of the pigmented stars on the anterior capsule resembling rice granules. (c) Rice granules
Persistent pupillary membrane (PPM) is a remnant of tunica vasculosa lentis and is of 3 types.[1,2,3]
Type-1 variants are membranes that are attached to iris. Type-2 variants are membranes with iridolenticular adhesions also termed the epicapsular pigmented stars with “chicken track” like deposits.[4] These are pigmented dendritic iris stromal melanocytes deposited on the anterior lens capsule either singly or in clumps.[5] Type-3 variants are membranes attached to cornea.
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References
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