System and method for measuring pupillary distance and papillary height of eye spots for far and near uses

Abstract

The invention relates to a non-contact measurement system of optical interpupillary distance and pupil height of a far eyespot and a near eyespot and a method thereof. The system comprises a central computer, an output terminal of the central computer is connected with an image display for displaying test images to a tested person, and input terminal is connected with an optical sensor device for acquiring eye images of the tested person. The optical sensor device is arranged on an object distance regulation device, a control circuit of the object distance regulation device is connected with a control signal output terminal of the central computer, and the central computer is equipped with a communication module, an image processing module and a data analysis module. The method is characterized by measuring the interpupillary distance and the pupil height by cooperation of all the parts of the system. The interpupillary distance and the pupil height of the near eyespot and the far eyespot can be objectively, accurately and rapidly measured by the method and the system, thus providing reliable data for correctly fitting eye glasses, eliminating errors during eyeglass assembly to truly protect visual acuity.

Description

technical field [0001] The invention belongs to the technical field of medical detection instruments, and in particular relates to a non-contact optical pupil distance and pupil height measurement system and method for a far eye point and a near eye point. Background technique [0002] With the advancement of lens science, more and more aspheric lenses and progressive multifocal lenses have entered our lives in recent years, but in use, we found that when fitting aspheric lenses and progressive multifocal lenses, measuring the pupillary distance and pupil height It is a difficult problem, let alone measuring the pupil height and pupil distance of the far eye point and the near eye point. At present, the pupillary distance is measured using a pupillary distance ruler or a pupillary distance meter. They are all contact measurements. It is difficult to find the positioning point and requires a lot of experience. This makes the measurement results unstable, and there are large d...

AI Technical Summary

Problems solved by technology

None of these methods can accurately, quickly, and objectively provide pupil height and pupil distance data for dispensing glasses. Human subjective factors in the data have a great influence, and the measurement uncertainty is large; different personnel use the same instrument, and the error of the measurement result is large. Very large; there is no unified calibration tool and process for measurement tools

All of these have brought serious errors to the measurement, causing a "prism" effect due to improper assembly during the use of the lens, causing the object image to shift, and the user to appear ghosting, dizziness, and strabismus when wearing it. It even leads to eye position deviation, which brings great pain to the patient

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