The state of the corneal endothelial layer in patients with an asymmetric posterior surface of the cornea planning an excimer laser vision correction

Purpose. To study the state of the corneal endothelial layer in patients having «islands» or «wicking zones» on the elevation maps of the posterior surface of the cornea. Material and methods. The state of the corneal endothelium layer was investigated with the scanning endothelial microscope Nidek CEM530 in 35 patients with myopia -3.9±0.35D aged from 24 to 52 years (32.56±1.03) when planning the excimer laser vision correction with an asymmetric posterior surface of the cornea, revealed with the analyzer of the anterior segment of the eye Galilei G4, combining a two-channel Scheimpflug camera and Placido’s disk drives. Results. It was established that with the age an increase in the curvature of the posterior corneal surface occurs. Conclusion. A difference in the measurement of the corneal thickness using two devices is detected, which averaged 15 microns. Probably that the increase in curvature of the posterior corneal surface is due to an increase in the area of endothelial cells. The excimer laser correction of vision in patients with «islands» or «wicking zones» with normal parameters of the endothelial layer of the cornea is possible.