Ocular biometry

Ocular biometry is an examination that measures the length of the eyeball.

What does ocular biometry involve?

Ocular biometry is performed according to two techniques:

Ultrasound biometry – ultrasound emitted into the cornea, requiring eye contact and anesthesia. It is invasive for patients and takes longer to perform.

IOL MASTER optical biometry – uses infrared laser light, is non-invasive to patients and no anesthetic or dilating eye drops are required.

Optical biometry is the most commonly used today because it provides a more accurate calculation, except in very specific cases (crystalline lenses strongly affected by cataract, very opaque).

IOL MASTER technology uses infrared cameras to capture the unique patterns of the eye. These patterns are then converted into a template, providing automatic near 100% fit rates for the artificial lens.

Recognition scanners work by illuminating the iris with invisible infrared light, detecting and excluding eyelashes, eyelids and specular reflections that usually block parts of the iris.

When is ocular biometry used?

This investigation is necessary for:

Cataract and presbyopia surgery by lens implants (artificial lens that replace opaque or aged natural lens).

Surgery to correct refractive errors (myopia, hypermetropia, astigmatism, etc.) with artificial lens.

Text medically reviewed by Dr. Teodor Holhoș, Ophthalmic Surgeon
Written by Dr. Holhos Team

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Important note regarding patient consultations and surgery appointments

A patient who cancels a consultation or surgery appointment once, at least one day prior to the scheduled appointment, has the right to a second appointment under the same conditions.
If the patient cancels the second consultation and/or surgery appointment, a new appointment can be made only if the patient accepts to pay for both the consultation and the surgery in advance. This can be done either by payment order or in cash at the clinic reception.
A patient who does not show up for their consultation or surgery, who does not cancel the appointment in due time, or does not answer the clinic’s calls, may request a second appointment only if they pay for the consultation/surgery in advance. 
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