(An eye chart is a chart used to measure visual acuity)

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• Eye chart — NOTOC Infobox Laboratory equipment name = Eye chart caption = Typical Snellen chart used for visual acuity testing. acronym = other names = uses = Vision testing inventor = manufacturer = model = related = Snellen chart Landolt C Lea test Tibetan …   Wikipedia

• Eye chart, Snellen's — The familiar eye chart used to measure how well you see at various distances. Snellen s chart is imprinted with block letters that line by line decrease in size, corresponding to the distance at which that line of letters is normally visible. The …   Medical dictionary

• Visual acuity — 20/15 and 20/15 vision redirect here. For other uses, see 2020 (disambiguation). Typical Snellen chart used for visual acuity testing. Visual acuity (VA) is acuteness or clearness of vision, which is dependent on the sharpness of the retinal… …   Wikipedia

• Human eye — Infobox Anatomy Name = Eye Caption = Schematic diagram of the human eye. The human eye is similar to most mammalian eyes.Dynamic rangeThe retina has a static contrast ratio of around 100:1 (about 6 1/2 stops). As soon as the eye moves (saccades)… …   Wikipedia

• Chart, Snellen's — The familiar eye chart used to measure how well you see at various distances. Snellen s chart is imprinted with block letters that line by line decrease in size, corresponding to the distance at which that line of letters is normally visible. The …   Medical dictionary

• Eye examination — An eye examination is a battery of tests performed by an optometrist or ophthalmologist assessing vision and ability to focus on and discern objects, as well as other tests and examinations pertaining to the eyes.All people should have periodic… …   Wikipedia

• Snellen chart — A Snellen chart is an eye chart used by eye care professionals and others to measure visual acuity. Snellen charts are named after the Dutch ophthalmologist Herman Snellen who developed the chart in 1862.DescriptionThe traditional Snellen chart… …   Wikipedia

• Snellen's chart — The familiar eye chart used to measure how well you see at various distances. Snellen s chart is imprinted with block letters that line by line decrease in size, corresponding to the distance at which that line of letters is normally visible. The …   Medical dictionary

• eye, human — ▪ anatomy Introduction  specialized sense organ capable of receiving visual images, which are then carried to the brain. Anatomy of the visual apparatus Structures auxiliary to the eye The orbit       The eye is protected from mechanical injury… …   Universalium

• eye disease — Introduction  any of the diseases or disorders that affect the human eye (eye, human).       This article briefly describes the more common diseases of the eye and its associated structures, the methods used in examination and diagnosis, and the… …   Universalium

• Visual angle — The visual angle is the angle a viewed object subtends at the eye, usually stated in degrees of arc.It also is called the object s angular size. The sketch helps to define it 1,2It shows an observer s eye looking at a frontal extent (the vertical …   Wikipedia