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First Author: V.Agafonova RUSSIA
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To determine a connection between anatomic functional parameters of initial status of eyes in hyperopia and features of performed refractive lensectomy.
The S. Fyodorov Eye Microsurgery State Institution Moscow Russia
Results of the study are based on an evaluation of anatomic clinical functional status in 217 eyes (187 patients) with high hyperopia aged from 18 to 55 years. Refractive lensectomy was performed in 127 eyes (97 patients). All patients underwent conventional examinations for refractive patients, ultrasound bio-microscopy (UBM), ophthalmic ergonomic investigations.
The UBM application opens the possibility to determine one of three types of hyperopic eyes revealed by us: physiological and two pathological. Patients of the first pathological type (shallow anterior chamber, narrow closed angle) need a preoperative preparation (laser iridectomy). Patients of the second pathological type (normal parameters of anterior segment in combination with vitreoretinal pathology) in case of extensive retinoschisis underwent a demarcated laser coagulation of retina. Operations with application only of topical or perilimbal anesthesia with a corneal access are indicated to patients of the pathological type. In case of anterior position of ciliary body and its processes the piggy back IOL implantation is impossible.
Difference in the structure of hyperopic eyes determines a various preoperative preparation, an anesthesia choice and surgical approach, a possibility of piggy back IOL implantation.