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
Eye care in the United Kingdom Eye care in the United Kingdom Eye care in the United Kingdom is available through the National Health Service. Eye care in the community is almost entirely provided by optometrists in private practice. Specialist NHS services are provided from a small number of eye hospitals, and their staff often run clinics in general hospitals in their region. Free NHS sight tests in England and Northern Ireland are available to anyone who is: People who are unable to visit and optician can have a mobile sight test where an optometrist comes to visit their home or a day centre. The patient