Sentence Examples


  • In hypermetropia the retina is in front of the principal focus of the eye.
  • In the retina the cones prevail in numbers over the rods, as in the mammals, and their tips contain, as in other Sauropsida, coloured drops of oil, mostly red or yellow.
  • One result of this among the Vertebrata is that the eyeball is pink in colour, since the cornea, iris and retina being transparent, the red blood contained in the capillaries is unmasked by the absence of pigmentary material.
  • A, Diagram of a retinula of the central eye of a scorpion consisting of five retina-cells (ret), with adherent branched pigment cells (pig).
  • Thus light, pressure, or mechanical stimulation acting on the retina and optic nerve invariably produces luminous impressions.
 

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