The digital transformation of the prescription eyewear industry is making it easier, more affordable, and more exciting for ...

Static parameters (pupil diameter at scotopic, mesopic, and photopic levels) and dynamic parameters (minimum pupil diameter post-light stimulation and dilation velocity) were evaluated.

Possible to measure PD of focusing-point distances ranging from 30cm to infinity. Automatically switches OFF one minute after operation is completed, thus conserving power.

Note that the measurement “cun” refers to what acupuncturists also call a person’s “body inch” — the distance between ... nostril and in line with the pupil when the eyes are facing ...

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