Snellen chart H, K, O, S, 3, U, Y, A, C, E, G, L, 2. The normal Snellen chart is printed with eleven lines of block letters. The first line consists of one very large letter, which may be one of several letters, for example E, H, or N. Subsequent rows have increasing numbers of letters that decrease in size. A person taking the test covers one eye from 6 metres or 20 feet away, and reads aloud the letters of each row, beginning at the top. The smallest row that can be read accurately indicates the visual acuity in that specific
Sight word Sight word Sight words, often also called high frequency sight words, are commonly used words that young children are encouraged to memorize as a whole by sight, so that they can automatically recognize these words in print within three seconds without having to use any strategies to decode. Sight words don’t follow the standards rules of phonics or the six syllable types. The term sight words is often confused with sight vocabulary, which is defined as each person's own vocabulary that the person recognizes from memory without the need to decode for understanding. Sight words were introduced after Whole language