MAY 2017 Sub. Code: 1601
M. OPTOM EXAMS
FIRST YEAR
PAPER I OPTOMETRY I
Q.P. Code: 281601
Time: Three hours Maximum: 100 Marks
I. Elaborate on: x 20 40)
1. Write in detail about an ophthalmic prisms, prentice rule, its base notations and
uses.
2. Write in detail about the aberrations and its control management in ophthalmic
lenses.
II. Write notes on: (10 x 6 60)
1. Differentiate between Luminance and Illuminance.
2. Write in short about the cardinal data of the thick lens.
3. Write in short about the significance of R.I in terms of the characteristics of an
ophthalmic lens.
4. Explain the optical construction of a lensometer with diagram.
5. Elaborate on oblique astigmatism aberration with neat diagram.
6. Define dispersion and explain why the shorter wavelengths lights are bending
more.
7. How are and 'Illuminance' related?
8. Explain how the effectivity differs when the vertex distance changes?
9. Write short note on stops and apertures in lens system.
10. Explain the ways to correct the spherical aberration with diagram.