Disorders of the Lens Practice Test 2026 – The Complete All-in-One Guide to Exam Success!

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What is the slit-lamp hallmark of posterior subcapsular cataract?

A dense opacity in the anterior capsule.

A translucent, wedge-shaped posterior subcapsular opacity near the posterior capsule, often with glare.

Posterior subcapsular cataracts show up on slit-lamp exam as a translucent, wedge-shaped or plaque-like opacity located right at the posterior subcapsular region, just in front of the posterior capsule, and they often produce noticeable glare. This posterior location and characteristic shape are what set PSC apart from other cataract types. In contrast, an opacity in the anterior capsule points to an anterior subcapsular cataract, serpiginous opacities in the cortex describe a cortical cataract, and a central nuclear opacity describes a nuclear cataract.

A serpiginous opacity in the lens cortex.

A central nuclear opacity.