Biometrics
Ocular biometry: measuring the eye to see better
Visit eye biometry is a high-precision ophthalmological examination used to measure various internal structures of the eye, particularly with a view to cataract surgery or an intraocular implant. This is a key step in guaranteeing optimal visual results, particularly when it comes to choosing the power of the artificial lens that will replace the crystalline lens.
What is biometrics?
Biometry uses specialized equipment to analyze the anatomical dimensions of the eye. Key measurements include the axial length of the eye, i.e. the distance between the cornea and the retina, and the curvature of the cornea, known as keratometry. The examination also assesses the depth of the anterior chamber and, in some cases, the thickness of the crystalline lens. These various data are then integrated into sophisticated calculation formulas to determine the most suitable intraocular implant for each patient.
The techniques used
Biometry uses specialized equipment to analyze the anatomical dimensions of the eye. Key measurements include the axial length of the eye, i.e. the distance between the cornea and the retina, and the curvature of the cornea, known as keratometry. The examination also assesses the depth of the anterior chamber and, in some cases, the thickness of the crystalline lens. These various data are then integrated into sophisticated calculation formulas to determine the most suitable intraocular implant for each patient.
When is it indicated?
Biometrics is mainly carried out before cataract surgery or as part of the installation of a refractive implant. It can also be useful for monitoring eye pathologies, or for in-depth ophthalmological check-ups. In children or patients with severe myopia, it can also be used to monitor ocular growth.
How does the exam work?
The examination is fast, painless and non-invasive. The patient places his or her chin on a support, fixes a point of light, and the device takes measurements in a matter of seconds. With optical biometry, no direct contact with the eye is required, limiting the risk of discomfort or infection.
Why is biometrics essential?
The accuracy of biometrics determines quality of vision after surgery. An error in calculation can lead to under- or over-correction, hence the importance of a rigorous examination. Thanks to new technologies, modern biometry now makes it possible to obtain visual results very close to natural vision, and even to correct certain refractive errors at the same time as cataracts.
Ocular biometry is an essential tool in the planning of intraocular surgery. Thanks to precise, reliable measurements, it enables each procedure to be tailored to the patient's visual needs, guaranteeing effective, personalized care.
