DIRECTED CONTROL OF VERGENCE – EFFECTIVE METHOD OF VISUAL ACUITY IMPROVEMENT IN PATIENTS WITH SPASM OF ACCOMMODATION OR MYOPIA

Abstract

An original method of visual acuity improvement has been developed and tested. Epiphinomenon of visual perception - a virtual visual image (VVI) is used as a base of the proposed method. The VVI emerges in conditions of physiological diplopia and fusion of paired images. The purpose of the research is to show that a directed small-stepped control of the VVI’s parameters including change of vergence of the visual axis is an integral condition of the visual acuity improvement in patients with spam of accommodation or myopia. But such control is possible if only a patient has a binocular vision together with a created on purpose strong motivation to improve the visual acuity. Directed precision control of vergence eye movements leads to the accommodation control and creation of a structural track of adaptation during the training. As a result of trainings a functional correction of visual acuity is possible in patients with spasm of accommodation or myopia (of low and moderate degrees). The proposed method was used for training of 37 school children with spasm of accommodation and 223 patients with myopia of low and moderate degrees. The visual acuity of all the training participants improved by 5-75 per cent. The results of the visual acuity improvement depend on the patient’s visual system flexibility and his/her scrupulous following the instructions given during the training.