Training method for accommodative and vergence systems, and multifocal lenses therefor

Abstract

Accommodative and vergence systems training method and multifocal ophthalmic lenses of Horizontal periodic or quasi-periodic Optical Power Stepless Alternating (HOPSA-lenses) therefor are proposed. Reading the text with HOPSA-lenses worn, while the head is stationary, provides a continuous alternating of accommodation and vergence strain/relaxation and, therefore, provides dynamic training of both systems. The method is applicable for human visual system therapy, eye diseases treatment/prevention and ophthalmology researches. The method enables combining the effective visual trainings with documents reading/processing, visual target examining, watching TV/video, playing computer games, etc., as well as combining the training with conventional vision correction. Several embodiments of HOPSA-lenses are disclosed, such as multi- and mono-cyclic, multi-layer, splitting the basic correction and training functions between lens' sides or layers, having left and right lenses' surfaces individually configured to provide the congruence of optical power for fixation, and/or the convergence invariability for fixation during the training.

Description

FIELD OF THE INVENTION[0001]The invention relates to training methods for improvement of vision and devices that can be employed for this purpose.BACKGROUND OF THE INVENTION[0002]1. Functional Background & Related Art[0003]It is well known that the human accommodative system can be trained to improve its performance. The most considerable studies are mentioned in the “Borish's Clinical Refraction”, see reference [1] (herein all reference numbers are included into rectangular brackets, and a list of the references is placed at the end of the present description).[0004]Marg [7] showed that steady-state accommodation could be varied easily by volitional control in the presence of a target and related blur feedback. These results were later confirmed and expanded by others [2, 3, 8].[0005]Using an objective recording system, Randle and Murphy [9] showed that with repeated testing (every 3 waking hours for 7 days; 3 hours total per day) of dynamic accommodative ability (predictable step ...

AI Technical Summary

Benefits of technology

[0068]Another important aspect of the present invention is the convenience training the accommodative and vergence systems. The inventive method is also distinct from the conventional training methods in that: —the varying of accommodation and vergence strain is provided in a step-less smooth manner, while employing only one HOPSA lens (some known methods also encompass a step-less varying of the strain, but made with the help of a plurality of specially selected lenses and respective complex devices for their positioning); —the training exercises are systematic and utilize a single pair of lenses; and —the intenseness of training is greater than the one for known related art devices and methods.

[0069]Yet, another aspect of the present invention is that it allows for providing the training exercises during usual human activities, such as examining a visual target or reading any text, without a need for assistance of another person, including an eye training specialist. The subjected person gets the training in a natural way of viewing objects / text; he / she just reads the text and simultaneously receives the background training. The aforementioned features of the inventive method are realized due to a special design of the inventive HOPSA lenses.

Problems solved by technology

However, either the complex, cumbersome and expensive equipment, or / and the professional assistance are needed for the training procedure implementation.

This impedes wide applications of the mentioned known methods.

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