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Iris recognition biometric systems apply mathematical pattern-recognition techniques to images of the irises of an individual's eyes.. Iris recognition is an automated method of biometric identification that uses mathematical pattern-recognition techniques on video images of one or both of the irises of an individual's eyes, whose complex patterns are unique, stable, and can be seen from some ...
Corrective lens. A corrective lens is a transmissive optical device that is worn on the eye to improve visual perception. The most common use is to treat refractive errors: myopia, hypermetropia, astigmatism, and presbyopia. Glasses or "spectacles" are worn on the face a short distance in front of the eye.
In the most familiar acuity test, a Snellen chart is placed at a standard distance: 6 metres. At this distance, the symbols on the line representing "normal" acuity subtend an angle of five minutes of arc, and the thickness of the lines and of the spaces between the lines subtends one minute of arc. This line, designated 6/6 (or 20/20), is the ...
Distance PD is the separation between the visual axes of the eyes in their primary position, as the subject fixates on an infinitely distant object. [ 2] Near PD is the separation between the visual axes of the eyes, at the plane of the spectacle lenses, as the subject fixates on a near object at the intended working distance. [ 3]
After Midnight, stylized as @fter midnight or abbreviated @m, is an American late-night comedy panel game show hosted by Taylor Tomlinson and executive produced by Stephen Colbert via his company Spartina Productions, Henry R. Muñoz III via his comedy studio Funny or Die, and The Late Show with Stephen Colbert executive producer Tom Purcell.
The Army Service Group member performing combat airborne landing in Northern Pakistan. The Pakistan Army Special Service Group ( reporting name: Army SSG[ 1 ][ 2 ]) is the special operations forces of the Pakistan Army. They are also known by their nickname of " Maroon Berets " due to their headgear.
Consumer spending accounts for the vast majority of the US economy, about 70% of it. Spending accelerated sharply in the second quarter to an annual rate of 2.3%, up from 1.5% in the first quarter ...
Corneal inlay. A corneal inlay (also called an intracorneal implant) [1] is a device which is surgically implanted in the cornea of the eye as a treatment for presbyopia. [2] Successful installation results in reducing dependence on reading glasses, so that the user can more easily engage in everyday tasks such as using a mobile phone, reading ...