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Across 4. WHERE CONES ARE MOST CONCENTRATED 6. OUTER FIBROUS COATING, WHITE OF EYES, GIVES STRUCTURE 7. GLANDS THAT SECRETE LUBRICATING SUBSTANCE 8. ABBREVIATION FOR LEFT EYE 11. AREA OF RETINA CONTAINING ONLY CONE CELLS 12. AREA CONTAINING FOVEA 14. SECOND LAYER OF EYE, CONTAINS BLOOD VESSELS 17. ALLOWS LIGHT TO ENTER THE EYE 18. MUSCLES THAT ALLOW EYES TO MOVE TOGETHER 19. REGULATES LIGHT, COLOURED PART OF EYE 21. THIRD LAYER OF EYE, WHERE PHOTORECEPTORS ARE 22. ABBREVIATION FOR RIGHT EYE

Down 1. COVERS IRIS, PUPIL AND LENS, FILTERS LIGHT 2. FOCUSES LIGHT ONTO RETINA 3. FARSIGHTED 5. DUE TO ACCUMULATION OF AQUEOUS HUMOR 9. BLIND SPOT WHERE OPTIC NERVE EXITS EYEBALL 10. BLURRED VISION DUE TO UNEQUAL CURVATURES OF LENS 12. NEARSIGHTED 13. PHOTORECEPTORS RESPONSIBLE FOR COLOR VISION 15. ABBREVIATION FOR BOTH EYES 16. TRANSPARENT ANTERIOR PORTION 20. PHOTORECEPTORS RESPONSIBLE FOR DIM LIGHT/DARK VISION