Head-mounted focusing sensitivity training lens capable of automatically switching concave lens and convex lens

Abstract

The invention discloses a head-mounted focusing sensitivity training lens capable of automatically switching a concave lens and a convex lens. The head-mounted focusing sensitivity training lens comprises a shell, deformable lenses and a lens deformation drive control device, the deformable lenses comprise lens front walls and lens rear walls, and a liquid cavity is formed between each lens frontwall and the corresponding lens rear wall and communicated with at least one liquid inlet and outlet. Any one or two of the lens front walls and the lens rear walls are made of transparent deformablematerials. The lens deformation drive control device comprises a liquid extraction and delivery mechanism, a control mechanism and a power supply, wherein the liquid extraction and delivery mechanismis electrically connected to the control mechanism. The liquid extraction and delivery mechanism is communicated with the liquid inlet and outlet of each deformable lens. The convex lens can be automatically switched into the concave lens, or the convex lens can be automatically switched into the convex lens, so that the head-mounted focusing sensitivity training lens can be simultaneously used asteenager myopia control training glasses, presbyopia control training glasses and child amblyopia sight enhancing glasses for training and improving eye focusing sensitivity.

Description

technical field [0001] The invention relates to the technical field of vision training, in particular to a head-mounted focusing sensitivity training mirror capable of automatic conversion of concave-convex lenses. Background technique [0002] It is known that an important factor in the occurrence and development of myopia in adolescents is long-term excessive "near-looking" (such as excessive reading, watching computers, playing games, etc.). Those who can be transformed into true myopia. Studies have found that the focus sensitivity of almost all myopia will decrease, and usually the higher the degree of myopia, the more obvious the decrease. Therefore, training the focus sensitivity of the eyeball to see far and near can help prevent and control spastic myopia, improve the focus sensitivity of true myopia, and reduce the occurrence and development of myopia caused by visual fatigue and adjustment lag. At the same time, it also helps to improve the progress of presbyopi...

AI Technical Summary

Problems solved by technology

The first type is a built-in or external light point (usually LED light) guided training device. This type of training device guides the eyes to focus from the near to the far away through the closed or open (LED) light point. The movement of relaxation adjustment is produced, and the effect of tension adjustment is generated from the distance to the near. Its main disadvantage is that the moving distance of the guiding light spot is too short, only a few centimeters to one meter, although it can produce a strong near-seeing effect. Intensify the role of accommodation, but can not get the full effect of far-slack accommodation

The second type is a two-unit lens type or a refraction adjustment type training device. This type of training device produces a hyperopia (that is, relaxation) diopter from 0 degrees to 900 degrees through a mobile combination of two unit lenses of different diopters. Changes, so as to obtain the relaxation of focus sensitivity training in this hyperopic diopter section, and its disadvantage is that it cannot produce myopic (that is, adjust tension) diopter changes to obtain tension adjustment training

The third type is the focus sensitivity training mirror of the reverse shot or flip mirror type. This type of training mirror is composed of two sets of lenses with the same degree of convex lens and concave lens but completely opposite refractive properties. Hyperopia can be obtained by reversing the two sets of lenses. The accommodation slack brought by the lens (convex lens) and the accommodation tension brought by the myopic lens (concave lens) have the disadvantage that there is no adjustment from high tension to low tension, or from high slack to low slack It is difficult for users to adapt to such a sudden change of refractive state in the excessively shifted section. Therefore, the effect of improving the sensitivity of the focus adjustment is not ideal.

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