CORNEA MCQ 8

1.      Drug contraindicated in corneal ulcer is

a.      Moxifloxacin

b.      Steroid

c.       Cyclopen

d.      Antiviral

e.      Lubricants

2.      The refractive index of cornea is

a.      1.000

b.      1.338

c.      1.376

d.    1.3375

e.       1.336

3.      Corneal metabolism changes from aerobic to anaerobic during

a.      Walking

b.    Sleep

c.       Running

d.      Waking

e.      Day

4.      Corneal nerves are not visible  on routine slit lamp examination in central cornea because

a.      They are not present there

b.      They lie in deep stroma

c.     They lack myelin sheath

d.      Destructive interference make them  invisible

                                 e.      They are too thin to be picked up by slit lamp magnification 

5.      Hypopyon consists of

a.      Leukocytes enmeshed in fibrin

b.      Dead bacteria engulfed by corneal keratocytes

c.     Polymorphonuclear leukocytes mixed with fibrin

d.      Dead bacteria engulfed by macrophages

e.      Cellular debris and plasma containing bacteria