AUGUST 2018 Sub. Code: 1536
DIPLOMA IN OPTOMETRY TECHNOLOGY
SECOND YEAR
PAPER I REFRACTION TECHNIQUES, CONTACT LENSES, LOW VISION
AIDS AND OPTICAL DISPENSING
Q.P. Code: 841536
Time Three Hours Maximum 100 Marks
Answer All questions.
I. Elaborate on: x 10 30)
1. Indications and contraindications of contact lens use.
2. Write about boxing system.
3. Explain on different types of refractive error.
II. Write notes on: (10 x 5 50)
1. Explain in brief on optics of contact lens.
2. Explain with and against movement in retinoscopy.
3. Write about different types of bifocals.
4. Explain on different types of magnifications.
5. Difference between hand held and stand magnifier.
6. Write about impact resistant lenses.
7. Explain about rehabilitation in low vision.
8. Write about advantages of contact lens over spectacles.
9. Write in brief on Jackson cross cylinder.
10. What is presbyopia? What are the treatment options?
III. Short answers on: (10 x 2 20)
1. Define oxygen transmissibility.
2. Write the spherical equivalent for the prescription -5.50/-2.25x100.
3. Define Abbe value and mention its importance.
4. What is travel vision?
5. Explain Duochrome test.
6. What is extended wear contact lens?
7. What are high index lenses?
8. List out few non optical devices.
9. What is cycloplegic refraction?
10. Define low vision.