🏥 AIIMS Optometry PYQs
⭐ Contact Lens PYQs
📋 12 MCQs
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AIIMS Optometry Contact Lens PYQs
Watch the video explanation, then solve 9 free MCQs with detailed answers. 3 bonus MCQs are locked inside the app.
🎥 Watch: AIIMS Optometry Contact Lens PYQs – Full Breakdown
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Q1. The first written description of a device approximating a contact lens is believed to date to ______. (AIIMS Bhubaneswar-2023)
✅ Answer: B. 1823
Sir John Herschel described a theoretical device resembling a contact lens in 1823 for correcting irregular astigmatism.
Sir John Herschel described a theoretical device resembling a contact lens in 1823 for correcting irregular astigmatism.
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Q2. The landing zone refers to the area of the lens that rests on the anterior ocular surface. The landing zone is also known as: (AIIMS PATNA 2023)
✅ Answer: C. Haptic zone
The haptic zone is the part of the contact lens that rests on the eye, providing support and stability.
The haptic zone is the part of the contact lens that rests on the eye, providing support and stability.
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Q3. Which of the following material is used to manufacture the EpiCon lens for keratoconus? (AIIMS Bhubaneswar-2023)
✅ Answer: C. Carbosilfocon
Carbosilfocon is a material specifically designed for EpiCon lenses due to its excellent oxygen permeability and durability, which are essential for keratoconus management.
Carbosilfocon is a material specifically designed for EpiCon lenses due to its excellent oxygen permeability and durability, which are essential for keratoconus management.
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Q4. In the context of soft lens manufacturing, _______ involves the polymerization of the monomer and solvent in open, spinning molds. (AIIMS Bhubaneswar-2023)
✅ Answer: B. Spin casting
Spin casting is a technique where centrifugal force is used to shape soft contact lenses during polymerization.
Spin casting is a technique where centrifugal force is used to shape soft contact lenses during polymerization.
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Q5. In the context of contact lens material, which of the following is NOT an advantage of cellulose acetate butyrate? (AIIMS Bhubaneswar-2023)
✅ Answer: C. Limited range of lens designs
Cellulose acetate butyrate is advantageous in many ways, but its range of lens designs is limited compared to newer materials.
Cellulose acetate butyrate is advantageous in many ways, but its range of lens designs is limited compared to newer materials.
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Q6. Which of the following statements is correct regarding overnight Ortho-K lenses? (AIIMS PATNA 2023)
✅ Answer: D. Both I and II
Overnight Ortho-K lenses are FDA-approved for myopia correction, and their effects are temporary, as the lens reshapes the cornea but does not permanently alter the refractive error.
Overnight Ortho-K lenses are FDA-approved for myopia correction, and their effects are temporary, as the lens reshapes the cornea but does not permanently alter the refractive error.
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Q7. Which of the following statements is correct regarding contact lenses? (AIIMS Bhubaneswar-2023)
✅ Answer: D. Both I and II
Contact lenses are optically thick due to their short radii of curvature, which significantly affects their optical properties.
Contact lenses are optically thick due to their short radii of curvature, which significantly affects their optical properties.
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Q8. Contact lenses float on the: (AIIMS Bhopal 2019)
✅ Answer: A. Cornea
Contact lenses rest on the tear film over the cornea, ensuring a smooth optical surface for improved vision correction.
Contact lenses rest on the tear film over the cornea, ensuring a smooth optical surface for improved vision correction.
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Q9. Which of the following is a contact lens contaminant? (AIIMS Bhubaneswar-2023)
✅ Answer: C. Both I and II
Both skin lipids and NaCl crystals can accumulate on contact lenses and cause contamination or discomfort.
Both skin lipids and NaCl crystals can accumulate on contact lenses and cause contamination or discomfort.
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Q10. What is one of the effects of contact lens usage on the ocular surface microbiome? (AIIMS, RAIPUR 2023)
🔓 Unlock AnswerQ11. A 16-year-old girl is interested in wearing contact lenses. Which factor is the strongest contraindication? (AIIMS Bhopal 2019)
🔓 Unlock AnswerQ12. Depending upon the water content, the hydrogel lenses can be of three types. Which of the following is correctly matched? (AIIMS PATNA 2023)
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