Eye-refractometer having a fogging operation

Details Eye-refractometer having a fogging operation Eye-refractometer having a fogging operation

1995-12-29

1997-03-18

Dang, Hung X.

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

351205, A61B 310

Patent

active

056127545

ABSTRACT:
An eye-refractometer includes a refracting power measurement system for objectively measuring the refracting power of an eye to be examined, a fogging mechanism for relaxing the accommodation of the eye to be examined by moving a target observed by the eye to be examined, a measurement switch for instructing measurement to start, a fogging operation suspension switch for instructing an operation of the fogging mechanism to be suspended, and a control system. When the measurement is instructed to start by the measurement switch and when the fogging operation is not instructed to be suspended by the fogging operation suspension switch, the control system operates the fogging mechanism, and thereafter, obtains data from the refracting power measurement system. When the measurement is instructed to start by the measurement switch and when the fogging operation is instructed to be suspended by the fogging operation suspension switch, the control system obtains data from the refracting power measurement system without operating the fogging mechanism.

REFERENCES:
patent: 5555039 (1996-09-01), Iki et al.

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