Training method for accommodative and vergence systems, and multifocal lenses therefor
First Claim
1. A multifocal ophthalmic lens, called a HOPSA-lens, for training a person'"'"'s accommodative and vergence systems, said HOPSA-lens is duly secured in a retainer device suitable for wearing by the person subjected to said training being placed in front of his/her eyes;
- said HOPSA-lens has a variable optical power, a geometrical center, and a horizontal meridian extending through said geometrical center substantially horizontally in relation to said retainer device with a predetermined deviation;
said HOPSA-lens is characterized with a plurality of vertical profiles perpendicular to said horizontal meridian;
said HOPSA-lens comprises;
a predetermined number N of near vision zones, called N-zones, each said N-zone has a center located on the horizontal meridian and predetermined dimensions;
a predetermined number F of far vision zones, called F-zones, each said F-zone has a center located on the horizontal meridian and predetermined dimensions;
wherein each said F-zone being adjacent along said horizontal meridian to at least one said N-zone and vice-versa, thereby forming an N-F pair of zones; and
a respective number of transitional corridors having predetermined dimensions, each said transitional corridor is disposed between the F and the N zones of each said N-F pair;
wherein said HOPSA-lens is characterized in that the optical power steplessly alternates substantially along said horizontal meridian only within said HOPSA-lens from any said N zone to the corresponding adjacent said F zone and vice-versa, while the optical power is invariable for each vertical profile from said plurality of vertical profiles.
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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.
30 Citations
20 Claims
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1. A multifocal ophthalmic lens, called a HOPSA-lens, for training a person'"'"'s accommodative and vergence systems, said HOPSA-lens is duly secured in a retainer device suitable for wearing by the person subjected to said training being placed in front of his/her eyes;
- said HOPSA-lens has a variable optical power, a geometrical center, and a horizontal meridian extending through said geometrical center substantially horizontally in relation to said retainer device with a predetermined deviation;
said HOPSA-lens is characterized with a plurality of vertical profiles perpendicular to said horizontal meridian;
said HOPSA-lens comprises;a predetermined number N of near vision zones, called N-zones, each said N-zone has a center located on the horizontal meridian and predetermined dimensions; a predetermined number F of far vision zones, called F-zones, each said F-zone has a center located on the horizontal meridian and predetermined dimensions; wherein each said F-zone being adjacent along said horizontal meridian to at least one said N-zone and vice-versa, thereby forming an N-F pair of zones; and a respective number of transitional corridors having predetermined dimensions, each said transitional corridor is disposed between the F and the N zones of each said N-F pair; wherein said HOPSA-lens is characterized in that the optical power steplessly alternates substantially along said horizontal meridian only within said HOPSA-lens from any said N zone to the corresponding adjacent said F zone and vice-versa, while the optical power is invariable for each vertical profile from said plurality of vertical profiles. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
and said method further comprising a follow-up step conducted after the step (3);
said follow-up step consists of periodic examinations of the person'"'"'s visual systems.
- said HOPSA-lens has a variable optical power, a geometrical center, and a horizontal meridian extending through said geometrical center substantially horizontally in relation to said retainer device with a predetermined deviation;
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20. The apparatus according to claim 8, wherein said controllable varying is so arranged that it essentially provides the congruence of optical power for each point of fixation during the training, and/or provides the convergence invariability for each point of fixation during the training.
Specification