Portable infrared eccentric photorefraction system

Abstract

The invention relates to the technical field of visual medical equipment and discloses a portable infrared eccentric photofraction system. The system comprises an infrared light source component, a visible light source component and a photo-shooting component which are connected with a driving power board, wherein the infrared light source component comprises a plurality of infrared LED lighting sets and a center infrared LED lamp, and the sector-shaped infrared LED lighting sets form a complete circle; the visible light source component comprises multiple groups of visible light LEG lamps, and each group of visible light LED lamp is positioned between adjacent LEG lighting sets; each infrared LED lamp is independently controlled to be lightened or not, and the lightening intensity of eachinfrared LED lamp is independently controlled; moreover, at most one group of visible light LED lamps is lightened at the same time, and the visible light LED lamps in the group are sequentially andgradually turned off when a group of visible light LED lamps are required to be turned off, and the visible light LED lamps in the group are sequentially and gradually lightened when a group of visible light LED lamps are required to be lightened; and the detection effect is prevented from being influenced by suddenly sharp rotation of eyes of an examinee due to stimulation on the examinee.

Description

technical field [0001] The invention relates to the technical field of vision medical equipment, in particular to a portable infrared eccentric photography optometry system. Background technique [0002] Newborn babies have immature eyeballs and short eye axis, and most of their eyes are farsighted. As we grow older, the eyeballs gradually become larger, the eye axis becomes longer, the degree of hyperopia gradually decreases, and the eyeballs gradually develop from hyperopia to normal eyes. If the refractive error of infants or children is high, or the adjustment power of the eyes will become weaker as they age, they will not be able to see far or near clearly, and great attention should be paid to the screening of refractive error for preschool children and monitoring. Traditional optometry is widely used in the measurement of refractive error in adults, but it requires the cooperation of the examinees to varying degrees. For example, the subject is asked to place the h...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned existing technical solutions have the following defects: However, most of the vision screening equipment lights up all the infrared lights in a certain direction at the same time, and there are few systems that individually control the light source. This method can distinguish the range of pupil diopter comparison Narrow, basically indistinguishable from pupils with a pupil diopter > 6D, so a system that can self-adjust the arrangement shape and brightness of the light source according to the environment and the real-time detection status of the pupil is needed

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