Anatomy Of Eyeball

This is a brief account of anatomy of eyeball.

Each eyeball (FIG-1) is a cystic structure kept distended by the pressure inside it.

 • Shape. Although, generally referred to as a globe, the eyeball is not a sphere but an oblate spheroid.

 • Poles. The central point on the maximal convexities of the anterior and posterior curvatures of the eyeball is called the anterior and posterior pole, respectively.

 • Equator of the eyeball lies at the mid plane between the two poles 

Dimensions of an adult eyeball 

• Anteroposterior diameter 24 mm

 • Horizontal diameter 23.5 mm

 • Vertical diameter 23 mm 

• Circumference 75 mm

 • Volume 6.5 ml 

• Weight 7 gm

Coats of the eyeball

* Fibrous coat

* Vascular coat

*Nervous coat

Segments Of and Chambers of the eyeball

                                                                                                                                               Dr.Raj