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 Name of the Doctor in other places in time and space. She enters the time stream to restore the Doctor's timeline. Echoes of Clara fall through space and time and appear in adventures of the Doctor's previous incarnations. The Doctor enters the column of light to save the original Clara, guiding her from a place where she sees several previous incarnations of the Doctor. Reunited, the two spot another figure in the shadows which Clara does not recognise. The Doctor explains the elderly figure is another past incarnation of himself, but what he did in the past was not in the Doctor's name. Imagery