On what we see: the phenomenology and analysis of perception

Ishihara Chart – numbers composed of 1 color of dots within a circle of dots of another color. Like a blue 22 inside a green circle. ... black dots. Red reflex diminished. ... Gives them little pupils. Constricting the pupil may cause decreased visual acuity in low light settings, so make sure and tell them not to drive at night and to be ... ................
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