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 number of sight words gives students a better start to learning to read. Recognizing sight words automatically is said to be advantageous for beginning readers because many of these words have unusual spelling patterns, cannot be sounded out using basic phonics knowledge and cannot be represented using pictures. For example, the word "was" does not follow a usual spelling pattern, as the middle letter "a" makes an sound and the final letter "s" makes a sound, nor can the word be associated with a picture clue since it denotes an abstract state (existence). Another example, is the word “said”,it breaks