Locus of the stimulus to visual accommodation: where in the world, or where in the eye?
D000065:Accommodation, Ocular; D000293:Adolescent; D000328:Adult; D004215:Distance Perception; D005260:Female; D006801:Humans; D008297:Male; D055095:Optics and Photonics; D010775:Photic Stimulation; D012858:Size Perception