Assessment of the Axial Length of the Eyeball

The assessment of axial length is used for calculating intraocular lens (IOL) power, evaluating the presence or absence of intraocular tumors, checking for corneal edema, and identifying disorders such as microphthalmia, nanophthalmia, and congenital glaucoma.

In A-scan and B-scan techniques, ultrasound waves are used, and the probe of the ultrasound device can be placed directly on the eye or eyelid after the application of anesthetic eye drops. A-scan is part of the preoperative assessment for cataract surgery, as the precise axial length of the eye must be determined in order to accurately calculate the required IOL power. B-scan accurately defines the internal anatomy and shape of the eye, so it is used in cases where there is an obstacle to evaluating the retina, such as severe cataracts or vitreous hemorrhage, providing detailed information about the retina. It can also be used to assess intraocular tumors. Equipment like Vumax is used for these procedures.

The IOL Master is an advanced device that allows for non-contact measurement of the axial length and corneal curvature in just one minute, without any risk of contact-related complications, and without requiring anesthetic drops. It is commonly used to measure eye parameters for IOL power calculation before cataract surgery.

The IOL Master performs non-contact biometry to calculate the IOL power for cataract surgery. In addition to measuring the axial length of the eye, this device also measures corneal curvature (keratometry).

The Biometer device can detect signals from the retina with high sensitivity and calculate the axial length of the eye non-contact. It performs measurements automatically and rapidly, with high depth penetration and sensitivity, reducing the pressure and stress on the patient.