biometry
Pronunciation: bye-OM-eh-tree
Precise measurement of eye dimensions for surgical planning, especially IOL power calculation.
Full Definition
Biometry in ophthalmology refers to the precise measurement of various ocular parameters, most commonly performed before cataract surgery to calculate the appropriate intraocular lens power. Modern biometry includes measurements of axial length, corneal curvature, anterior chamber depth, and lens thickness using techniques such as optical coherence biometry or ultrasound. Accurate biometry is essential for achieving optimal refractive outcomes after cataract surgery. Advanced biometry devices can also measure corneal diameter and provide detailed anterior segment analysis.
Usage
Usage note: Critical for accurate IOL power calculations and surgical planning.
In Context
- "Preoperative biometry revealed an axial length of 24.8mm in the right eye." — Surgical planning note
- "Optical biometry was preferred over ultrasound due to dense cataract opacity." — Clinical documentation