Eye chart smaller symbols until the person cannot identify the symbols. The smallest symbols that can be reliably identified is considered the person's visual acuity. The Snellen chart is the most widely used. Alternative types of eye charts include the logMAR chart, Landolt C, E chart, Lea test, Golovin–Sivtsev table, the Rosenbaum chart, and the Jaeger chart. Charts display several rows of optotypes, which are standardized symbols for testing vision. Optotypes are usually letters, numbers, or geometric symbols. Each row of the chart depicts optotypes of a different size. Typically the largest optotypes are in the top row. The optotypes become progressively
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