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
Name-letter effect counts of any letter, which also caused Nuttin to cast doubt on whether Zajonc's theory could hold true in the real world. Subjective frequency is how frequently subjects a stimulus appears. Name letters may be noticed more and, consequently, assumed to occur more frequently than other letters. Early research into the impact of exposure showed that differences in subjective frequency yielded different results even when the frequency was identical. Hoorens and Nuttin tested whether subjective frequency could be an explanation for the name-letter effect by asking subjects to rank-order the entire alphabet twice, once according to their letter preference and