Lens

Question 1

what is shape and length of equatorial diameter of Lens ?

Answer 1

Shape of the lens is biconvex

Equatorial diameter of the lens is 9 mm to 10 mm

Question 2

What the normal refractive Power of eye lens ?

Answer 2

16-17 diaoptors

Question 3

the refractive index eye ball lens is how much?

Answer 3

1.39 all over the lens but 1.4-1.41 . refraction

Question 4

what are the parts of the nucleus of Lens and when they are formed?

Answer 4

Embryonic ( 0-3 months )
foetal (3-8 months)
Infantile (pre puberty)
Adult (Post puberty)

Question 5

what are the two types of Anterior epithelial cells present on the anterior capsule? mention about sutures

Answer 5

A cells - cuboidal cells reside at the centre
E cells - Columnal cells reside at the equator , from which Lens fibres are formed

sutures are microscopic gaps left behind the Intersection
Anteriorly- Y shaped
posteriorly- Inverted y Shaped

Question 6

what are the sutures present in Lens?

Answer 6

These are the microscopic gaps Left behind while intersecting
Anteriorly-y shaped
posteriorly-inverted y shaped

Question 7

Lens is supported by ______________ Ligaments

Answer 7

suspensory Ligaments

Question 8

Anterior most condensed part of viterous is called ________________

Answer 8

Hyaloid membrane

Question 9

what is patellar fossa?

Answer 9

Lens residues in the space present in Posterior chamber called patellar fossa

Question 10

what is wiegerts ligament?

Answer 10

A strong adhesion present B/w the most posterior part of the Lens and the Hyaloid membrane is called wiegrets Ligament (or) Hyalo-capsular ligament

Question 11

what is the Primary metabolism of the lens?

Answer 11

The Primary metabolism of Lens is anaerobic

more the 80% of glucose in Lens is metabolized anaerobically

Question 13

True/Flase - Entery of water into Lens causes Cataract

Answer 13

True
## foot hote
Pump Leak mechanism exists to prevent water from getting into Lens