Method for fully automatically measuring eyeball parameters

Abstract

The invention discloses a method for fully automatically measuring eyeball parameters. The problem of an ophthalmic optical biological measuring instrument in the prior art that the focusing speed is low and an optical system is complicated in structure is solved. The method for fully automatically measuring the eyeball parameters comprises the following steps: S1, starting up light source equipment; S2, carrying out light source imaging; S3, carrying out human eye focusing; S4, measuring the eyeball parameters; and S5, correcting a corneal curvature radius. Whether focusing is accurate or not can be judged according to the offset of a light spot formed by the light source imaging during human eye focusing, the judgment is relatively convenient, the focusing is relatively rapid, the corneal curvature radius, the cornea transverse diameter, the pupil diameter and the eye axis diameter of eyes can be measured synchronously, the measuring speed is increased, multiple functions can be achieved through a single device, the structure is compact, and the practicability is good; and meanwhile, the cornea curvature radius can be corrected through a correction formula according to different corneas after measurement, so that measurement can be more accurate.

Description

technical field [0001] The invention relates to the technical field of human eye data measurement, in particular to a method for fully automatic measurement of eyeball parameters. Background technique [0002] The measurement of ocular biological parameters mainly includes the measurement of the axial length of the patient's eye, corneal curvature, anterior chamber depth, and corneal diameter. Diagnosis and treatment have important clinical significance, therefore, high-precision measurement methods of eyeball biological parameters are very important and necessary. Currently, the mainstream measuring instruments on the market include the IOL Master from Carl Zeiss, Germany, and the SW-9000 produced by Tianjin Sower Electronic Technology Co., Ltd. [0003] IOL Master uses Partial Coherence Interferometry (PCI) technology to measure the parameters of the eye tissue to be tested, but the system can measure few parameters at one time, and other means are needed to measure the p...

AI Technical Summary

Problems solved by technology

Applying this method can achieve the purpose of accurate measurement, but this method increases the complexity of the optical system and the measurement speed is slow; and the system is not equipped with an autofocus device, and cannot perform autofocus compensation for defocus conditions; such devices have optical delays The line part is composed of a turntable and multiple prisms and mirrors. The slow rotation speed of the turntable leads to slow measurement speed of the system

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