Using a digital pupilometer
What is the correct way to use a handheld digital pupilometer to take a pt's PD? I've been told a few different ways in my time, so I just thought I'd throw it out here. Do you set it to infinity and view both eyes? or one eye at a time? Set it to 40cm or 30? to get a near PD or just subtract 1.5mm from the distance PD? We don't have a user manual where I work now and some opticians are using it differently. Thanks
I've always used it set to infinity and with both eyes. Then, I check using setting for each individual eye.
set to infinity and measure binucularly. unless special case such as alternating phoria may need to do it monocularly.
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Set it for what you are fitting for.
PAL: Monocular at ∞
S.V. (anything): Monocular at relative Rx dictated distance.
FT or TRI: Binocular (unless the monocular difference exceeds visual/comfort performance - be sure to explain cosmetic outcome)
Balance: Monocular (at relative Rx dictated distance) 'skewed' to working eye.
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