Anatomy and physiology of the eye, with hints for the preservation of the eyesight (1901)
Herbert, John Frederick, 1860- · Philadelphia, Pa., The author · leaf 32
th, gradually dimin-ishing as age advances. Raj^s coming from a near object are more or less diver-gent, and should they enter a normal eye when it is in astate of rest (that is, adjusted for distant objects), the^^would be focussed at a point behind the retina. What then must take place in order… … Figure 14. By an increase in the convexity of the crystalline lens, the point F, at which the solid lines meet behind the retina, are brought to a focus at point F, as shown by dotted line. shown to take place in the anterior surface of the lens,which becomes more convex and approaches the…
Eye · Lenses
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