An elderly patient presents with white dandruff-like deposits on the anterior lens capsule seen on slit-lamp examination. What is the most likely diagnosis?
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White flaky or dandruff-like material on lens capsule in elderly = pseudoexfoliation syndrome.
Step 1: Understanding the Question:
The presence of "dandruff-like" flaky material in the eye of an elderly patient is a classic clinical description for a specific secondary glaucoma syndrome. Step 2: Detailed Explanation:
Pathogenesis: Pseudoexfoliation syndrome (PEX) is a systemic condition where abnormal fibrillar proteinaceous material is produced and deposited in the eye.
Lens Findings: On slit-lamp exam, this material appears on the anterior lens capsule in three zones: a central disc, a peripheral ring, and a clear zone in between created by the rubbing of the iris. The loose material looks like white dandruff.
Associated Risks: PEX is the most common identifiable cause of secondary open-angle glaucoma. The material clogs the trabecular meshwork, raising intraocular pressure.
Surgical Difficulty: These patients have weak zonules (fibers holding the lens). During cataract surgery, they are at higher risk for lens dislocation or zonular dehiscence.
Differential: Pigment dispersion syndrome also causes secondary glaucoma but presents with iris transillumination and pigment deposits (Krukenberg spindle), not white flakes.
Step 3: Final Answer:
Based on the age of the patient and the "dandruff-like" flakes on the lens, the diagnosis is Pseudoexfoliation syndrome.
