n leaving the eye, be convergent, and, meeting at the con¬ jugate focus r', will form a clear image in the air. Con¬ versely, an object at r' will form a clear image on the retina (r), compare Figs. 10 and 12. The image of every object at a greater distance than r' will be formed more or less in… … of r beyond f, the4e@will be the distance of its conjugate focus r' (= r) ; iikolher words, the higher will be the M., and the morS^gjdistinct will distant objects be. If the elongation QBjfhe eye be very slight, r nearly coinciding with F.<^Sp*= r) will be at a much greater distance (com¬ 23, §…
Eye—Diseases · Color blindness · Eye Diseases · Color Vision Defects
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