[Calculation of the focal power of an intraocular lens in the anterior segment sizes disproportional to the length of the anteroposterior axis of the eye].

Ultrasound and optical coherent biometries were used to study the influence of the biometric parameters of the anterior segment of the eyeball on the precision of calculation of the focal power of an intraocular lens (IOL). A clinical study has demonstrated that among the biometric parameters of the anterior segment of the eyeball, there is a close correlation of miscalculation of IOL focal power with the diameter of the cornea "from white to white" and accordingly with the diameter of the floor of the corneal segment. Based on the findings, the authors have developed a procedure for calculating the focal power of an IOL for cases of the disproportion of the corneal segment to the IOL length of the eyeball.