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What is Thinnest pa of scelra is: and explain in detail?
The sclera is much thicker behind than in front; the thickness of its posterior pa at the macula is 1 mm. The sclera thins to 0.3 mm just behind the recti muscle inseions (about 6 mm behind the corneoscleral junction) and this area is extremely vulnerable to traumatic rupture. In fact this is the most common site of a ruptured globe due to blunt trauma.At the equator the sclera measures 0.4-0.5 mm in thickness.It is thickest behind, near the entrance of the optic nerve. However it is weakest at the entrance of theoptic nerve.