The ocular echometry is a non-invasive eye examination.
Why the test is performed:
It estimates, through mathematical formulas, the power of the intraocular lens that will be used in the cataract surgery. This is performed according to the measurement of different ocular parameters such as axial length, corneal curvature and anterior chamber depth.
How it is performed:
The patient is lying on the stretcher with their eyes closed. Water soluble gel is applied on the upper eyelid and an appropriate transducer is put on the eyelid.
How to prepare for the test:
No preparation is required for this test.