How to measure pupil distance accurately

The accurate methods of measuring pupil distance mainly include distance pupil distance measurement, near pupil distance measurement, automatic optometry instrument inspection, etc.

1. Distance pupil distance measurement

refers to the pupil distance of the examinee when looking at the distance, generally measured at a distance of 5m or 6m. This method includes direct measurement method and indirect measurement method, and the inspection result is more accurate.

2. Near pupil distance measurement

is the pupil distance when looking at the near distance, generally measured at 30cm.

3. Automatic optometry instrument inspection

can also be used to detect the pupil distance, and the result is more accurate.