Question

Q5. Corneal deturgescence is dependent upon:
i)……………………………………………………………………………………………………
………………………………………………………………………………………………………
………………………………………………………………………………………………………
………………………………………………………………………………………………………
………………………………………………………………………………………………………
ii)……………………………………………………………………………………………………
………………………………………………………………………………………………………
………………………………………………………………………………………………………
………………………………………………………………………………………………………
………………………………………………………………………………………………………
iii)…………………………………………………………………………………………………
………………………………………………………………………………………………………
………………………………………………………………………………………………………
………………………………………………………………………………………………………
………………………………………………………………………………………………………

Answer 1

Ans:deturgescence. ) state of relative dehydration necessary to maintain the transparency of the cornea of the eye

Corneal- hydration :
Normal cornea maintains itself in a state of relative dehydration (80% water
content) which is essential for corneal transparency.

State of relative dehydration that is necessary for
corneal transparency. Normal water content of cornea
80%) is kept constant by balance of factors that draw
water in cornea(swelling pressure and IOP), factor which
prevent flow of water in cornea (epithelial barrier) and
that draw water out of cornea(Endothelial pump)
It is kept constant by---

1) Factors which draw water in the cornea, like
-Stromal swelling pressure (SP)
-Intraocular pressure (IOP)

2) Factors which prevent flow of water in the cornea
- Mechanical barrier function of epithelium &
endothelium.

3) Factors which draw water out of cornea
-active pumping action of endothelium.
cornea