The effect of sunglasses on the visual mechanism.
D000221:Adaptation, Ocular; D004777:Environment; D005139:Eyeglasses; D006801:Humans; D012029:Refraction, Ocular; D013057:Spectrum Analysis; D013472:Sunlight; D014466:Ultraviolet Rays; D014785:Vision, Ocular; D014792:Visual Acuity