A multi-scale mixed vision impairment analyzer and its analysis method

Abstract

The invention relates to the field of medical instruments, in particular to a multi-scale hybrid visual impairment analyzer used for real-time analysis of sensing stimuli on an expanded retina. The analyzer comprises a lighting unit, an imaging unit, a multi-scale stimulation generator unit, a processing unit, an optical compensation unit, a pupil monitoring unit and a fixed target unit. The lighting unit is used for providing at least one optical probe for different layers of the eyes for performing eye analysis; the imaging unit is used for capturing retinal images on the entire view field of the multi-scale stimuli; the multi-scale stimulation generator unit is used for displaying the images with ultra-high resolution under control of multiple field domains, has visible light sensitivity and is capable of outputting the controllable fuzzy stimuli; the processing unit is used for stabilizing the stimuli in a large view field for retinal diagnosis; the optical compensation unit is used for optically correcting eye aberrations; the pupil monitoring unit is used for adjusting movement of the eyes and head and measuring the pupil change; the fixed target unit is located on a conjugate plane of the retina and used for guiding the sight direction of a subject.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a multi-scale hybrid visual impairment analyzer (hereinafter referred to as MHVIA) and an analysis method thereof. Background technique [0002] Blurred vision is an important problem in healthy vision that can affect neurophysiological, perceptual and developmental processes. Refractive errors often require optical correction and control. However, spatiotemporal blur variation continues to challenge our understanding of blur effects, as well as attempts to optically correct blur using advanced ophthalmic solutions such as progressive add-on lenses. [0003] Vision simulations provide a way to understand and predict how patients experience the world with corrected vision (e.g. ophthalmic correction). The two main components of a vision analyzer are precision (actual stimulus applied to the retina) and adjustability / repeatability of optical corrections compared to ophthalmic corre...

AI Technical Summary

Problems solved by technology

[0010] (1) Retinal illumination is limited;

[0011] (2) Eye adaptation problems, because the stimulus distance is relatively close;

[0012] (3) Changes in pupil size are not easy to control

However, the link between retinal optical exposure and visual acuity remains incomplete due to limited spatial manipulation in visually impaired simulators

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