Subjective and objective integrated precision optometry device and method

Abstract

Disclosed are a subjective and objective integrated precision optometry device and method. The device is composed of a left eye light path and a right eye light path. Each monocular eye light path comprises a human eye refraction objective measurement subsystem, a human eye refraction correction subsystem, an eyeball positioning subsystem and a subjective visual function test subsystem; each humaneye refraction objective measurement subsystem objectively measures the refractive power of the corresponding human eye to guide an inner focusing device in moving front and back along an optical axis to correct myopia or hyperopia and rotating a cylindrical mirror pair to correct astigmatism; an examinee observes a built-in sighting target through the device and moves a double-dot scribing framepart as a whole to finely tune the out-of-focus value according to subjective visual experience, the relative angle of the rotating cylindrical mirror pair is finely tuned to synthesize a light-scattering degree and an axial direction until the best subjective corrected visual quality is obtained, and the monocular subjective refraction optometry is completed. After the subjective refraction optometry of the left and right eyes is completed, the left and right eye light paths are moved in the direction perpendicular to the optical axis as a whole to adjust the pupil distance, the red-green and binocular adjustment balance process is carried out, and finally, the best precision refraction correction prescription for both eyes is given.

Description

[0001] Technical field [0002] The invention relates to the technical field of optical measurement, in particular to a subjective-objective integrated precision optometry device and optometry method. Background technique [0003] Uncorrected refractive errors (including myopia, hyperopia, and astigmatism) and untreated cataracts are the two leading causes of visual impairment (see literature [J]. Ophthalmology 2016; 123(5): 1036-1042) . Accurately measuring the degree of refractive error of the human eye and determining the best correction prescription is the key to correcting the refractive error of the patient. [0004] At present, the optometry process includes two steps: objective optometry and subjective optometry. The methods of objective optometry include retinoscopy optometry and the use of professional equipment such as computer refractometer, human eye aberration meter, etc. to objectively measure the patient's refractive error. On this basis, the subjective opto...

AI Technical Summary

Problems solved by technology

[0006] The technical problem solved by the present invention is: to provide a subjective and objective integrated precise optometry device and optometry method, to solve the separation of subject and object in existing optometry means (using different equipment), subjective optometry is greatly affected by human factors, and the degree of trial lenses is discontinuous There is a problem of rounding errors, and it can objectively measure binocular refraction, continuous subjective optometry, interpupillary distance measurement and visual function measurement (including but not limited to visual acuity, stereopsis) at the same time, and realize the integrated subjective and objective optometry of both eyes

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