MCQ's In Optometry
1. Glands of Zeis are:
A. Modified sebaceous glands
B. Modified sweat glands
C. Modified lacrimal glands
D. Modified meibomian glands
2. Ducts of the main lacrimal gland open in:
A. Superior fornix
B. Inferior fornix
C. Both of the above
D. None of the above
3. Accessory lacrimal glands of Krause are present in the:
A. Upper fornix
B. Lower fornix
C. Both of the above
D. None of the above
4. Length of the nasolacrimal duct is about:
A. 8–12 mm
B. 22–34 mm
C. 12–18 mm
D. 18–21 mm
5. Nasolacrimal duct opens into:
A. Superior meatus
B. Middle meatus
C. Inferior meatus
D. Maxillary sinus
6. Nasolacrimal duct is directed:
A. Downwards, slightly outwards and backwards
B. Downwards, slightly inwards and backwards
C. Downwards, slightly outwards and forwards
D. Downwards, slightly inwards and forwards
7. In the nasolacrimal duct, valve of Hasner is present at its:
A. Upper end
B. Lower end
C. Middle
D. None of the above
8. Thinnest wall of the orbit is:
A. Medial wall
B. Floor
C. Roof
D. Lateral wall
9. Thickest wall of the orbit is:
A. Medial wall
B. Lateral wall
C. Roof
D. Floor
10. The volume of the orbit is about:
A. 30 cc
B. 40 cc
C. 50 cc
D. 60 cc
11. All of the following ocular structures are derived from the surface ectoderm except:
A. Crystalline lens
B. Substantia propria of the cornea
C. Conjunctival and corneal epithelium
D. Lacrimal glands
12. Crystalline lens is derived embryologically from the:
A. Surface ectoderm
B. Neuroectoderm
C. Surface ectoderm and mesoderm
D. Neuroectoderm and mesoderm
13. Definitive or secondary vitreous is embryologically derived mostly from:
A. Neuroectoderm
B. Mesoderm
C. Surface ectoderm
D. Surface ectoderm and mesoderm
14. Sphincter and dilator pupillae muscles are derived
embryologically from the:
A. Surface ectoderm
B. Mesoderm
C. Neuroectoderm
D. All of the above
15. All of the following ocular structures are derived
embryologically from the neuroectoderm except:
A. Epithelial layers of ciliary body and iris
B. Sphincter and dilator pupillae muscles
C. Optic nerve
D. Optic nerve sheaths
For Answers of the above questions, Please watch this Video.
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