Sclera is thinnest :
- Sclera is thinnest posterior to rectus muscle inseions (0.3 mm) - Posterior 5/6th of the outer fibrous coat of eye forms the sclera - It is white / opaque in colour due to haphazardous arrangement of collagen in it . - Anterior 1/6th of the outer fibrous coat is transparent due to regular arrangement of collagen, known as Cornea - Corneo-Scleral Junction - Limbus - Outer surface of sclera is covered by conjunctiva, beneath that is a layer of loose connective tissue called episclera. - Innermost layer of sclera consists of elastic fibres called lamina fusca. - Lining inner aspect of sclera are- highly vascular uveal tract concerned chiefly with nutrition of eye & true visual nerve endings concerned with reception & transformation of light stimuli, called retina - Deficient pa of sclera is lamina cribrosa which is pierced by axons forming the optic nerve as they traverse from optic nerve head (optic disc) posteriorly
At the limbus
Under inseion of recti
Anterior to attachment of rectus
At the equator
Sclera