Optical Biometry
What is Optical Biometry?
Biometry is a technique used to take accurate measurements of eye including the curvature and diameter of the cornea, the length of the eye, the thickness of lens and depth of the anterior chamber.
How is biometry performed?
Biometry is performed sitting upright. After placing the chin on the chinrest of the machine, the biometer takes scans of the eye, without making direct contact with the eye.
What is biometry used for?
The measurements taken by the biometer are fed into various mathematical formulae to estimate the correct intraocular lens (IOL) power for cataract surgery.
What are some examples of biometers?
- Zeiss IOL Master 700
The Zeiss IOL Master 700 biometer uses swept-source OCT technology to obtain highly accurate measurements of the eye, including measurements of the previously elusive posterior cornea.
- Haag-Streit Lenstar LS900
The Haag-Streit Lenstar LS900 uses low-coherence reflectometry to obtain highly accurate measurements of the eye.
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