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Pupillary distance (PD), more correctly ... Pupillary distance measurement with iPad app. ... These tools have become more prevalent as online purchasing of eyewear ...
Many automated pupilometers can also function as a type of pupil response monitor by measuring pupil dilation in response to a visual stimulus.. In ophthalmology, a pupillary response to light is differentiated from a pupillary response to focus (i.e. pupils may constrict on near focus, as with the Argyll Robertson pupil) in the diagnosis of tertiary syphilis.
In February 2010, Eyebuydirect began incorporating facial recognition technology to its site to give users the ability to measure their pupillary distance using user-submitted photographs. [13] [14] In 2013, French lens manufacturer Essilor purchased a majority stake in Eyebuydirect. [6] [15] Essilor had previously purchased Framesdirect.com in ...
The National Institutes of Health Stroke Scale (NIHSS) uses pupillary response as a systematic assessment tool to provide a quantitative measure of stroke-related neurologic deficit and to evaluate acuity of stroke patients, determine appropriate treatment, and predict patient outcome. [26]
To order glasses, customers need to provide their eyeglass prescription and a measurement of their pupillary distance (PD). [25] Zenni has a web page that supports measuring the PD. [19] Columnist Mary Hunt praised Zenni for offering "the absolute cheapest prices on plastic frames" and said it has "a wide range of frame styles and lens options ...
PD or IPD Pupillary Distance or Interpupillary Distance, respectively. It is the distance between pupil centers. BVD Back vertex distance is the distance between the back of the spectacle lens and the front of the cornea (the front surface of the eye). This is significant in higher prescriptions (usually beyond ±4.00D) as slight changes in the ...
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