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Optician services are also offered in many larger stores, with Boots Opticians providing eye tests along with the sale of spectacles and contact lenses. Many stores also feature traditional photo processing and/or a Kodak picture kiosk where users of digital cameras and camera phones can create prints.
Optician services are also offered in many larger stores, with Boots Opticians providing eye tests along with the sale of spectacles and contact lenses. [citation needed] Many stores also feature traditional photo processing and/or a Cewe picture kiosk where users of digital cameras and camera phones can create prints via Bluetooth, USB, or CD.
Snellen chart is used to estimate visual acuity (last three rows are 20/15, 20/13 and 20/10) A Snellen chart is an eye chart that can be used to measure visual acuity . Snellen charts are named after the Dutch ophthalmologist Herman Snellen who developed the chart in 1862 as a measurement tool for the acuity formula developed by his professor ...
[31] Most observers may have a binocular acuity superior to 6/6; the limit of acuity in the unaided human eye is around 6/3–6/2.4 (20/10–20/8), although 6/3 was the highest score recorded in a study of some US professional athletes. [32]
Coupons can be used to research the price sensitivity of different groups of buyers (by sending out coupons with different dollar values to different groups). Time, location and sizes (e.g. five pound vs. 20 pound bag) [12] affect prices; coupons are part of the marketing mix. [13] So is knowing about the customer. [14] [12]
In humans and animals, the FOV refers to the area visible when eye movements – if possible for the species – are allowed. In optometry , ophthalmology , and neurology , a visual field test is used to determine whether the visual field is affected by diseases that cause local scotoma or a more extensive loss of vision or a reduction in ...
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