Medical Radiography and Photography, Band 60,Ausgabe 1Eastman Kodak Company, 1984 |
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Seite 13
Ambient light rays Drawing showing why human retina cannot be observed directly . Light rays enter and leave the eye along the same optical lines . When an observer attempts to visualize the retina , the light is blocked along the axial ...
Ambient light rays Drawing showing why human retina cannot be observed directly . Light rays enter and leave the eye along the same optical lines . When an observer attempts to visualize the retina , the light is blocked along the axial ...
Seite 18
... light . From the standpoint of optics , the lack of pig- ment is quite undesirable because light that diffuses the eyeball interferes with vision . In humans , this black pigment prevents not only the external entrance of light through ...
... light . From the standpoint of optics , the lack of pig- ment is quite undesirable because light that diffuses the eyeball interferes with vision . In humans , this black pigment prevents not only the external entrance of light through ...
Seite 20
... light is greatest at its sides and least at its center . " 67-68 Rods contain the pigment rho- dopsin , also called visual purple.89 The absorption of light by rhodopsin exactly matches the results from psychophysical tests of the ...
... light is greatest at its sides and least at its center . " 67-68 Rods contain the pigment rho- dopsin , also called visual purple.89 The absorption of light by rhodopsin exactly matches the results from psychophysical tests of the ...
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