Eye chart smaller towards the bottom of the chart. The person removes any glasses or contact lenses, and stands or sits a standardized distance from the chart (e.g., 20 feet for the Snellen chart). The person is then asked to identify the optotypes on the chart, starting with large rows and continuing to smaller rows until the optotypes cannot be reliably identified any more. The row in which the person can reliably identify symbols defines the visual acuity. One eye is tested at a time. Practically, this is accomplished by covering the other eye with a hand, piece of paper, or a
Sight word the phonetic rule of ai normally makes the long a sound, ay. In this word it makes the short e sound of eh. The word "said" is pronounced as /s/ /e/ /d/. The word “has” also breaks the phonetic rule of s normally making the sss sound, in this word the s makes the z sound, /z/." The word is then pronounced /h/ /a/ /z/. A number of sight word lists have been compiled and published; among the most popular are the Dolch sight words and the magic 100 words. These lists have similar attributes, as they all aim to