Sclera

Question 1

Sclera extends from _______ up to _______

Answer 1

entrance of optic nerve

Limbus

Question 2

sclera occupies _____ space of the eyeball

Answer 2

5/6

Question 3

fluid content of sclera

Answer 3

65% - 70%

Question 4

sclera loses its opacity if fluid content increases to _____ or decreases to _______

Answer 4

increase 80%

decrease 40%

Question 5

Scleral openings:

Answer 5

Anterior scleral foramina

Posterior scleral foramina

Question 6

scleral opening at limbus perforated by ACA

Answer 6

anterior scleral foramina

Question 7

scleral opening at the entrance of optic nerve

Answer 7

Posterior scleral foramina

Question 8

Histologic layers of Sclera:

Answer 8

Episclera

Sclera proper or Stroma

Lamina fusca or Dark Layer

Question 9

reason for opacity of sclera:

Answer 9

dense irregularly arranged collagenous fibers

Question 10

innermost layer of sclera

contains melanocytes

Answer 10

Lamina Fusca or Dark Layer

Question 11

thickest part of sclera:

Answer 11

entrance of Optic nerve 1mm

Question 12

thinnest part of sclera:

Answer 12

insertion of recti muscles in front of equator - 0.3 mm

Question 13

Radius of Curvature of Sclera:

Answer 13

12mm