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Eye… A review
 

Vivek Tiwari Final BHMS
RKDF Homoeopathy Medical College
Bhopal
Madyapradesh
Mobile-98275 42668
Email:Vivek02061984@yahoo.co.in
 

    The eye is the organ of sight situated in the orbital cavity. It is spherical in shape, In order to achieve clear vision, light is reflected from the objects within the visual field and focused on the retina of the both eyes. The process involved in producing a clear image is

  • Refraction of the light rays
  • Accommodation of the eyes to light

    Although these may be considered as separate process, effective vision is dependent upon their co ordination. A reminder of the parts of the eye may help you understand things better.    
  The cornea is a transparent shell over the front of the eye. Behind the cornea is the flexible and transparent lens of the eye. The pupil is the black dot in the middle of the eye when you look someone in the eye. The iris is the ring-like part of the eye that is a shade of brown or blue in colour. The cilliary body is tissue that holds the lens in place, and helps flex it. It also adjusts your pupil size. The sclera is the white of the eyeball. The choroid is a black tissue lining the inside of the eyeball that absorbs light. The retina is a mesh of nerve tissue that detects the light. The optic nerve is the route the signals from the retina travel along to get to the brain. The fovea is the part of the retina with greatest colour vision.