What is an Eye Biometry test?
This is a test to measure the shape and size of the eye. The goal of this test is to calculate the power of intraocular lens (IOL) implants required for cataract and refractive surgery.
Biometry can take place by using either optical coherence interferometry or ultrasound technology.
At Eagles’ Sight Eye Care Center, we have the latest equipment to run this and many other eye tests. Our equipment will measure the length of the Eye Ball, the curvature of the cornea, anterior chamber depth and corneal width.
The equipment uses different formulas to give the Surgeons for each individual eye.
How is the Eye Biometry test done?
This is a non-invasive test performed by placing your chin on the instrument chin rest and focussing on a target light. It takes only a few minutes to perform.
Ultrasound biometry is used for patients who have dense cataracts where measurements on the IOL Master are not possible. This test involves placing an ultrasound probe on the surface of the cornea to get measurements of axial length.
These can then be used along with keratometry measurements to calculate IOL lens powers. A local anesthetic eye drop is inserted into the eye before this test is performed.