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Prismatic contact lens

A contact lens, prism technology, used in glasses/goggles, synchronization devices, instruments, etc., can solve problems such as insufficient convergence, visual discomfort, and not widely accepted

Active Publication Date: 2019-11-12
纽偌莱恩斯公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And when the ability of the eyes to train on near objects for long periods of time is reduced by muscle fatigue or increasingly incorrect peripheral vision, insufficient convergence occurs, leading to other forms of eye fatigue
So far, the precise causal mechanisms for these digital device-related visual discomfort, pain, and migraines have not been widely accepted

Method used

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Experimental program
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Embodiment Construction

[0026] Embodiments of the present invention are capable of reducing various sources of eye fatigue or visual fatigue, such as fixation differences and insufficient convergence. It has been suggested that an underlying common driver of these ocular disorders is proprioceptive feedback or proprioceptive overstimulation. Insufficiency of convergence occurs when the gaze of both eyes converges on nearby objects during binocular fixation but the optical axes do not converge properly. Prolonged viewing of nearby objects (such as a computer screen), especially through positive power lenses, can cause this lack of convergence by overstretching the extraocular muscles. More recently, it has been suggested that underconvergence can be reduced by introducing prisms in the optical path.

[0027] When the viewer decides to look at a new target relative to the periphery of the optimal foveal area, or when the eye and target move relative to each other, vision is affected by fixation differ...

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Abstract

A class of prismatic contact lenses includes a first prism zone, having a first prism and a first optical power; and a progressive prism zone, adjacent to the first prism zone, having a progressive prism that varies from the first prism to a second prism. The prismatic contact lens can further comprise a second prism zone, adjacent to the progressive prism zone, having the second prism and a second optical power. Another class of prismatic contact lenses include a first prism zone, having a first prism and a first optical power; a second prism zone, adjacent to the first prism zone, having a second prism and a second optical power; and a sharp transition between the first prism zone and the second prism zone.

Description

technical field [0001] The present invention relates generally to contact lenses, and more particularly to prismatic contact lenses that reduce eye strain, hypoconvergence, and proprioceptive hyperstimulation. Background technique [0002] During every waking moment, our eyes send images to our brain. The brain also receives feedback about the current orientation of our eyes. Our brains then take the images from each eye, along with the orientation information, and synthesize the 3D picture we use for vision orientation in everyday life. This synthesis happens rapidly and subconsciously at the core level of our brain. [0003] When we need to move our eyes from a current target to a new target, such as to the next word during reading or to the next road sign during driving, our brain calculates how much our eyes need to rotate in order to see the new target. In asymptomatic patients, peripheral vision correctly calculates how our eyes need to move to bring our central vis...

Claims

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Application Information

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IPC IPC(8): G02C7/04
CPCG02C7/14G02C7/041G02C7/043G02C7/044G02C7/045
Inventor J·P·卡拉尔A·普拉姆利G·T·齐曼伊
Owner 纽偌莱恩斯公司