Sense organ eye

 Eye or Vision 

Anatomy of the eye-

       Eye is the organ of sense for sight ,which situated in the orbital cavity or eye socket 

Eye is the the spherical shaped organ in the sense which is help in vision or sensory vision . 

It's about 2.5 CM in diameter and  three layers of the eye are completely covered

There are three layer is-

 1.Outer layer or tunica fibrous

2.Middle layer or tunica vasculosa

3.Inner layer or Tunica Nervosa

  1.Outer layer or tunica fibrous-

- Outer layer consists of two structure cornea and sclera .

It is outermost avascular layer of eyes which preserve the shape of eye , 

Anteriorly consists of cornea and posteriorly consists of sclera. 

A. Cornea-

Cornea is the outermost part of the eyes which is anteriorly transparent Court over the coloured Iris .

cornea is convex cornea is convex,anteriorly light rays enter into the eyes through the cornea to focus on the retina .

structurally cornea composed of three layer outer, middle or inner layer

A. Outer layer-

Outer layer consists of stratified squamous epithelial tissues with his help in transparency. 

B. Middle layer-

Middle layer composed of collagen fibres. 

C. Inner layer-

Innermost layer is composed of simple squamous epithelial tissue. 

B. Sclera-

Sclera is the whitest part of the eye , which is second part of the outer layer is mainly composed of collagen fibre 

it cover 5/6 part of the eyeball posteriorly and literallyeye ball posteriorly and Lateral ,  anteriorly covered by cornea.Sclera  give shape for protection of eye balls and attachment to the extrinsic muscles of the eyes, which helpful in movement of the eyes. 

At the junction of sclera and cornea as an opening is now as Canal of schlemm.