Commentary: Get your hairdresser's visual needs right to get your hairstyle right!

In establishing visual standards, the following two approaches are used as frameworks to establish visual demands and visual competence. Grundy’s[1] famous visual task analysis nomogram proposes a visual acuity standard that is twice the level of minimum visual acuity required for a task estimated using the nomogram based on working distance and the size of visual details pertinent to the task. Bailey[2] has proposed a five-step approach to determining vision standards that involves choosing a method to grade job competence, determining the required visual factors to perform the relevant tasks, estimating vision standards for each visual factor, correlate the visual performance of competence vs incompetent employees, and finally comparing the grading of visual performance to job competency.