Features of accommodation function in contemporary schoolchildren with progressive myopia

Abstract

The purpose of this study is to study the state of accommodative function in contemporary schoolchildren using the method of computer accommodation.
 We studied 50 children (10-16 years old): 40 with different degrees of myopia and 10 children (control group) with emmetropia. The accommodation was studied with the computer accomodate Righton Speedy-K ver. MF-1. Defined power of accommodative response to accommodative stimulus imposed by calculating a ratio the coefficient of accommodative response (CAR) and the nature of the contraction of the fibers of the ciliary muscle by determining microfluctuations coefficient (CMF).
 It was found that in groups of patients with emmetropia and weak myopia, the coefficient of accommodation response and the microfluctuation coefficient exceed the average normal values. Especially pronounced changes in the group of children with mild myopia. In groups of children with moderate and high myopia, the CAR is significantly lower than in mild myopia and emmetropia, while the CMF also exceeds normal values.

Objective Characteristics of Accommodation in Present-Day Schoolchildren with Different Levels of Myopia

“…Developing the idea of the researchers, taking into account the lack of official programs for the mathematical analysis of the histogram obtained from the results of computer accommodation on the Speedy-K ver. MF-1 and the need for a comprehensive quantitative assessment of the work of the ciliary muscle, in order to objectively study the effectiveness of medication, hardware and other effects on the ciliary muscle, we set the task of developing our own method for calculating the corresponding mathematical indicators of the accommodogram [7].…”