Optometry MCQ Quiz test - 1
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1. Posterior segment of the eyeball includes structures present posterior to the:
⭕A. Posterior surface of the lens and zonules
⭕B. Iris and pupil
⭕C. Vitreous body
⭕D. Anterior surface of the lens and zonules
2. Radius of curvature of the anterior surface of an adult crystalline lens with accommodation at rest
⭕A. 7 mm
⭕B. 10 mm
⭕C. 8 mm
⭕D. 9 mm
3. The lens bres meet around the Y-shaped sutures in which part of nucleus of the crystalline lens:
⭕A. Embryonic nucleus
⭕B. Fetal nucleus
⭕C. Infantile nucleus
⭕D. All of the above
4. The layer of the cornea once destroyed does not regenerate is: Epithelium Bowman’s membrane Descemet’s membrane All of the above Required
5. Which is a sweat gland:
⭕A. Gland of Moll
⭕B. Gland of Zeis
⭕C. Mebomian gland
⭕D. All of the above
6. Weight of an adult eyeball is:
⭕A. 7 g
⭕B. 9 g
⭕C. 11 g
⭕D. 13 g
7. Schwalbe’s line forming part of the angle of anterior chamber is the end of:
⭕A. Sclera
⭕B. Descemet’s membrane of cornea
⭕C. Anterior limit of trabecular meshwork
⭕D. Posterior limit of trabecular meshwork
8. Smallest diameter of the eyeball is:
⭕A.Vertical
⭕B. Horizontal
⭕C. Anteroposterior
⭕D. More than 24 mm
9. Anterior segment of the eyeball includes structures lying in front of the..
⭕A. Iris
⭕B. Crystalline lens
⭕C. Vitreous body
⭕D. Cornea
10. Adult size of the cornea is attained by the age of
⭕A. 2 years
⭕B. 3 years
⭕C. 5 years
⭕D. 9 years
11. Circumference of an adult eyeball is:
⭕A. 80 mm
⭕B. 65 mm
⭕C. 75 mm
⭕D. 70 mm
12. In a normal adult person the depth of anterior chamber in the centr
⭕A. 2.5 mm
⭕B. 3 mm
⭕C. 3.5 mm
⭕D. 4 mm
13. The youngest lens bres are present in:
⭕A. Central core of the lens nucleus
⭕B. Outer layer of the nucleus
⭕C. Deeper layer of the cortex
⭕D. Superficial layer of the cortex Required
14. Diameter of an adult crystalline lens is:
⭕A. 5–6 mm
⭕B. 7–8 mm
⭕C. 9–10 mm
⭕D. 11–12 mm
15. Thickness of the adult crystalline lens is about:
⭕A. 2.5 mm
⭕B. 3.5 mm
⭕C. 4.25 mm
⭕D. 5 mm
16. Volume of an adult eyeball is:
⭕A. 7.5 mL
⭕B. 6.5 mL
⭕C. 5.5 mL
⭕D. 8 mL
17. Infantile nucleus of the crystalline lens refers to the nucleus developed
⭕A. 3 months of gestation to till birth
⭕B. Birth to one year of age
⭕C. Birth to puberty
⭕D. One year of age to 3 years of age
18. Capsule of the crystalline lens is thinnest at:
⭕A. Anterior pole
⭕B. Posterior pole
⭕C. Equator
⭕D. None of the above
19. All of the following are true about corneal endothelium except:
⭕A. Cell density is about 3000 cells/mm2 at birth
⭕B. Corneal decompensation occurs when cell count is decreased by 50 percent
⭕C. Endothelial cells contain active pump mechanism
⭕D. Endothelium is best examined by specular microscopy Required
20. Anteroposterior diameter of normal adult eyeball is:
⭕A. 25 mm
⭕B. 24 mm
⭕C. 23.5 mm
⭕D. 23 mm