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
The Doctor Is Sick undergoing a battery of diagnostic tests, Mrs Spindrift amuses herself with some disreputable new friends at nearby pubs. Sometimes, to Edwin's distress, she sends these friends to keep her husband company during visiting hours, rather than come herself. Most of the novel is a dream sequence: while he is anaesthetised for brain surgery, Edwin's anxiety over his wife and the company she keeps turns into a fantasy in which Edwin leaves the hospital and encounters his wife's friends, with whom he has various adventures. Shortly before he wrote "The Doctor Is Sick" Burgess suffered an obscure mental breakdown that ended