The Eye. RETINA. SCLERA. IRIS. VITREOUS HUMOUR. AQUEOUS HUMOUR. LENS. PUPIL. CORNEA. OPTIC NERVE. BLIND SPOT - Activity. Cover your RIGHT eye and with your LEFT eye, look at the + . At a certain distance , the dot will disappear from sight.
Corrected with a Concave Lens
Corrected with a Convex Lens
Irregular Shaped Cornea and/or Lens.
Produces twofocusing points in front of or behind the retina.
Hard Contact Lenses