Eye chart number). The denominator indicates the distance in feet at which a person with normal vision could stand to correctly identify the same symbols identified by the person tested. For example, a visual acuity of 20/20 is considered normal. Numerous types of eye charts exist and are used in various situations. For example, the Snellen chart is designed for use at 6 meters or 20 feet, and is thus appropriate for testing distance vision. There is often also a need to test a subject's vision at near or occupational tasks (such as reading or computer use). For these situations, a Rosenbaum
Chocolate letter Chocolate letter Chocolate letters are a form of candy associated with the Dutch holiday of Sinterklaas (Saint Nicholas). Celebrants of the Sinterklaas celebration are traditionally given their initials made out of chocolate, either on Sinterklaas Eve, which is the fifth of December each year, or during the morning on Sinterklaas Day, which is the sixth day of December. Various sizes, types and flavours are available. In order to use the same amount of chocolate for each letter the manufacturer varies the thickness of the letter. This way one letter is not favoured over another, for example, with wide letters such