System and method for illumination and fixation with ophthalmic diagnostic instruments

摘要

An eye measurement system may include a target that moves transverse to an optical path from the target to eye, so as to relax accommodation of the lens of the eye. The target may move transverse to the optical path on a display. The patient may be fogged while the target moves transverse to the optical path, and the target may become smaller such that the patient perceives the target to be moving away from the patient. A pupil camera may measure eye position that can be correlated with the position of the target on the display to determine that the patient has maintained fixation on the moving target. A visible measurement light beam may be pulsed subsequent to and/or during motion of the target that relaxes accommodation of the eye so as to avoid visual interference of the measurement light beam with the target on the display.

主权项

1. An optical device to diagnose an eye of a patient, the device comprising:
a display with a target visible to a patient; an optical system to project the target display along an optical path from the display to the patient; a sensor to measure optical aberrations of the eye; and a pulsed measurement light source coupled to the measurement sensor and visible to the patient, wherein the pulsed light source is pulsed while the target is moved transverse to the optical path so as to relax an accommodation of the eye of the patient, wherein the display further comprises a stationary scene presented while the target moves transverse to the optical path.