Eye chart chart or Jaeger chart can be used. While the Snellen chart remains the default, some authors have argued that the logMAR chart is superior. The logMAR chart presents the same number of symbols on each line, uses a typeface with letters that are equally legible at various sizes, and by varying the symbol size logarithmically, it is easier to use at nonstandard distances. As a consequence of these improvements, the logMAR chart has been proposed as a more reliable tool for measuring visual acuity. However, the logMAR chart has not yet been widely adopted. It can be difficult to measure
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