Laboratory and field experiments demonstrate night myopia influences visual performance in college-age individuals, suggesting correction improvements are beneficial.
The relationship between night myopia under simulated night driving conditions and the dark focus of accommodation was examined. Over a range of luminance and contrast conditions typical of the night driving situation, college‐age subjects accommodated to about one‐half the difference between a distant simulated road sign and their individual dark focus. Subsequent laboratory and field experiments demonstrated that: (1) a negative correction equal to one‐half the value of the dark focus significantly improved night visual performance as compared with their normal or full dark‐focus correction, and (2) greater improvements in performance were obtained for subjects who exhibited a relatively near dark focus.
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Owens et al. (1976) studied this question.
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