61st ICLEP

Q1. What is the role of ocular lubricants in contact lens wearers?

• A. Reinforcement of Multilayer Structure

• B. Reduction of friction

• C. hydration and osmoprotection

• D. All of the above

Q2. Which of the following is NOT a dry eye test

• A. NITBUT

• B. MG expression

• C. Van Herrick test

• D. Fluorescein staining

Q3. Which of the following is NOT a benefit of soft contact lenses?

• A. Immediate comfort

• B. Easy adaptation

• C. Higher oxygen permeability than RGP lenses

• D. Better initial visual acuity than spectacles

Q4. Which one of the following is responsible for the difficult in assessing the lens movement in soft contact lens?

• A. Low Modulus

• B. Higher modulus

• C. Thicker lenses

• D. Low water content lenses

Q5. The common parameters used to assess the lens movement in PGM.However in

some cases it is difficult to assess due to various lens physical characteristics. In these cases, which of the following assessment methods is crucial to judge

• A. Push-up test

• B. Upgaze lag

• C. Lateral gaze lag

• D. static fit assessment

Q6. In general, what is the minimum cylindrical prescription available in soft toric lenses?

• A. 0.50 D cyl

• B. 0.75 D cyl

• C. 1.00 D cyl

• C. 1.00 D cyl

Q7. If a lens is seen ‘off axis’, or mislocated, this is measured in _____ relation to the vertical or horizontal directions.

• A. Centimeters

• B. Diopters

• C. Degrees

• D. Millimeters

Q8. The Vision from most of simultaneous vision multifocal contact lens design lenses is dependent on the?

• A. Corneal diameter

• B. Palpebral aperture

• C. Pupil size

• D. Iris diameter

Q9. Which component in soft contact lenses allows water absorption in hydrogel materials?

• A. Silicone

• B. HEMA

• C. PMMA

• D. Polycarbonate

Q10. Which of the following materials is used in silicone hydrogel lenses?

• A. Polymacon

• B. Methafilcon

• C. Lotrafilcon

• D. Filcon A