posterior subcapsular cataract
Also written as: PSC
A type of cataract that forms beneath the posterior lens capsule and typically causes significant glare and near vision problems.
Full Definition
A posterior subcapsular cataract is a specific morphological type of lens opacity that develops in the subcapsular cortex at the posterior pole of the crystalline lens. This cataract type is characterized by its location directly behind the lens capsule and often presents as a central plaque that significantly impacts vision quality, particularly in bright lighting conditions and for near tasks. The condition may be age-related, steroid-induced, or associated with various systemic diseases. In editorial contexts, proper anatomical terminology and consistent classification systems are essential, as this cataract type requires specific surgical considerations and patient counseling approaches.
Usage
Usage note: Distinguish from 'posterior capsular opacity' which refers to clouding of the capsule itself, not the lens material.
In Context
- "The patient's posterior subcapsular cataract was causing significant glare symptoms while driving at night." — Clinical history
- "Posterior subcapsular cataracts often require modified surgical techniques due to their adherent nature." — Surgical planning note