Dysopia correction system based on enhanced light field display

Abstract

The invention provides a correction scheme based on enhanced light field display to patients with visual defects such as shortsightedness, farsightedness and early-stage glaucoma; and the correction scheme comprises a visual and depth information acquisition module, a dysopia modeling module and an enhanced light field display module. The visual and depth information acquisition module comprises two manners: with respect to the situation of a two-dimensional display, digital images are used as the input and the depth information is acquired; with respect to the real scenes, a binocular three-dimensional visual manner is adopted. The dysopia modeling module comprises a dysopia parameter setting module, an image degradation model and a light field calculating and processing module. The enhanced light field display module comprises two manners: with respect to the situation of the two-dimensional display, an internally integrated LCD (Liquid Crystal Display) visual display of the system is adopted; and with respect to the real scenes, the near-vision light field display module is adopted.

Description

technical field [0001] The invention relates to a visual defect correction method device and system, which can provide a correction scheme based on enhanced light field display for typical visual defects such as myopia, hyperopia, and early glaucoma. Background technique [0002] Vision is the most important source of information for humans about the surrounding environment. Refractive errors, including myopia, hyperopia, presbyopia, astigmatism, and higher-order aberration refractive disorders, are the most common visual impairment problem and are considered to be one of the leading causes of global vision loss. It affects people of all ages. According to the data survey of WHO in 2005, there are about 2 billion people in the world who need to wear glasses. Considering the extension of human life span and the aggravation of near vision tasks, it is expected that the number of people who need to wear glasses to correct their vision will continue to increase in the future. ...

AI Technical Summary

Problems solved by technology

[0003] At present, the visual correction methods for refractive errors mainly use optical glasses and surgery to improve the visual acuity of patients. However, these two methods have certain limitations: glasses can only correct low-order aberrations such as myopia and hyperopia. , not suitable for visual compensation of high-order aberrations; optical correction has the possibility of irritating the eyes, which is difficult to be accepted by all users; corneal laser surgery or intraocular lens implantation has very limited improvement in visual acuity, and Due to the risk of introducing surgical complications due to its invasive method, the cost performance of solving such problems is low relative to the curative effect; it cannot correct visual defects such as high-order aberrations, early glaucoma visual acuity loss, and peripheral visual field defects or compensation

So far, there has not been a complete report on the visual defect correction method equipment and system based on enhanced light field display at home and abroad.

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