Зависимость морфометрических и функциональных характеристик аккомодационного аппарата глаза от уровня внутриглазного давления и стадии развития первичной открытоугольной глаукомы

Abstract

On a basis of a survey of 128 eyes of presbyopes with POAG using ultrasound biomicroscopy (UBM) with the definition of reserves and the volume of accommodation depending on the stage of glaucoma it was found no reliable relationship. There was a clear link data on the level of IOP. The thickness of the lens decreased from 3.79 mm for IOP less than 21 mm Hg. to 3.57 mm with IOP over 32 mm Hg., depth of perizonular space, increased from 0.63 mm to 0.73 mm, respectively, the value of presbyopia increased from 2.0 diopters to 2.63 diopters with, the volume and reserves of accommodation decreased from 2.1 and 0.57 diopters to 1.4 and 0.33 diopters respectively. Elevation of intraocular pressure at presbyopes with POAG have lead to a flattening of the lens and reduce its accommodative ability, and increase of perizonular space with growing of IOP indicates on a significant role in the pathogenesis of POAG of increase of aqueous humor production through the ciliary muscle tone increasing with presbyopia.