[A study of the mechanism of production of night myopia at low luminance environment].
The mechanism of production of night myopia was investigated in detail by using a laser-speckle refractometer. Night myopia begins to appear at the luminance level with the emergence of rod (scotopic) vision and increases to a maximum average of 1.35 D with further decrease of environmental luminance for the completion of rod vision. It is demonstrated experimentally that both spherical and chromatic aberrations of the eye do not play an important role in the production of night myopia. It is therefore concluded that night myopia is posed on the dark focus of accommodation of the resting state focus of the eye in the absence of adequate stimulus during scotopic vision.
Xie
L C
LC
Optical Instruments Department, Zhejiang University, Hangzhou.
Zhang
H J
HJ
Dong
T H
TH
D000065:Accommodation, Ocular; D000328:Adult; D003623:Dark Adaptation; D006801:Humans; D008029:Lighting; D009216:Myopia / Q000145:classification / Q000209:etiology* / Q000503:physiopathology