aphakia
Pronunciation: ah-FAKE-ee-ah
The absence of the natural crystalline lens, either congenital or following surgical removal.
Full Definition
Aphakia is the condition in which the eye lacks a natural crystalline lens, resulting in significant hyperopia and loss of accommodation. This state can occur congenitally due to developmental abnormalities or, more commonly, following cataract extraction without intraocular lens implantation. Historically, aphakic patients required thick glasses or contact lenses for vision correction, but modern practice involves immediate or secondary intraocular lens implantation. In pediatric cases, aggressive amblyopia treatment is essential to prevent permanent visual impairment.
Usage
Usage note: Distinguish from 'pseudophakia' which refers to the presence of an artificial lens.
In Context
- "The patient remained aphakic following complicated cataract surgery with capsular rupture." — Postoperative assessment
- "Secondary IOL implantation was planned to correct the aphakic refractive error." — Surgical planning note