Human eye and defects

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Across
  1. 1. membrane with light-sensitive cells (RETINA)
  2. 3. structure that adjusts focus in the eye (LENS)
  3. 7. distance of distinct vision, typically about 25 cm (VISION)
  4. 10. corrected with convex lenses (HYPERMETROPIA)
  5. 13. spherical structure containing the eye (EYEBALL)
  6. 16. images sent from the retina (BRAIN)
Down
  1. 2. ability to focus on objects at varying distances (ACCOMMODATION)
  2. 4. corrected with concave lenses (MYOPIA)
  3. 5. of the brain in interpreting visual signals (PROCESSING)
  4. 6. on the retina for visual perception (IMAGE)
  5. 8. condition reducing accommodation ability (PRESBYOPIA)
  6. 9. of lens used to correct hypermetropia (CONVEX)
  7. 11. transparent membrane on the front of the eyeball (CORNEA)
  8. 12. of lens used to correct myopia (CONCAVE)
  9. 14. occurring on the retina (IMAGEFORMATION)
  10. 15. of the eye to adjust its focal length (POWER)