Astigmatism real-time measurement platform

Abstract

The invention relates to a user astigmatism real-time measurement platform, which comprises a touch screen input device arranged on a PDA device and used for inputting the maximum astigmatism degree preset by the user under the operation of the user; A watertight protective cover arranged in front of the front camera and used for encapsulating the front camera to provide watertight protection forthe front camera; The front camera is arranged on the front panel of the PDA device, and is used for photographing the instant image of the PDA user to obtain and output the instant user image. A histogram processing apparatus connected to the front camera is configured to receive the instant user image and perform histogram processing on the instant user image to obtain a histogram distribution range of the instant user image. By the invention, the instant astigmatism of the user can be accurately obtained based on the instant pupil radial length of the user.

Description

technical field [0001] The invention relates to the medical field, in particular to an instant measurement platform for astigmatism. Background technique [0002] Astigmatism is a refractive error of the eye that is related to the curvature of the cornea. After parallel light rays enter the eye, due to the different refractive powers of the eyeball on different meridians, they cannot be gathered at one point (focus), and a clear object image cannot be formed. This situation is called astigmatism. Astigmatism cannot form a clear image by means of accommodation or moving the distance between the target and the eye. Only by wearing a suitable cylindrical lens can a clear image be formed on the retina. According to the form of expression, astigmatism can be divided into regular astigmatism and irregular astigmatism, the former can be corrected with lenses, and the latter cannot be corrected with lenses. [0003] At present, the detection of users' astigmatism lacks the same ac...

AI Technical Summary

Problems solved by technology

[0003] At present, the detection of user's astigmatism lacks the same accuracy as that of user's myopia detection. In addition, the detection of astigmatism requires fixed-point detection in professional places, and real-time detection is not possible.