NBEO-Physical Optics (Non big 8)

What is the speed of light in a vacuum?

3 x 10^8 m/s

Which Electromagnetic wave has the highest frequency?

Gamma ray

Which Electromagnetic wave has the lowest frequency?

Radio waves

Which UV light ranges from 400-315 nm?

A) UV-A

B) UV-B

C) UV-C

A) UV-A

Which UV light ranges from 315-280 nm?

A) UV-A

B) UV-B

C) UV-C

B) UV-B

Which UV light ranges from 280-100 nm?

A) UV-A

B) UV-B

C) UV-C

C) UV-C

Which UV light is blocked by the cornea and does not reach the lens?

A) UV-A

B) UV-B

C) UV-C

C) UV-C

Which of the following laser techniques is NOT used to image the RNFL?

A) CSLT

B) SLT

C) SLP

D) OCT

B) SLT

What is the main type of laser that is used for pan retinal photocoagulation (PRP)?

Argon

Which laser type is primarily used for LASIK and PRK?

Excimer

Which laser is primarily used for Posterior capsular opacification following cataract surgery?

Nd (Neodymium) YAG

Which of the following is NOT an indication for a YAG laser?

A) SLT

B) LPI

C) PRP

D) PCO

C) PRP

Which of the following lasers has a similar use to Argon and can also be used for PRP?

A) Helium neon

B) Holmium laser

C) Krypton

D) ND: YAG

C) Krypton

According to the Speckle Effect, if a patient observes against motion what type of refractive error do they most likely have?

A) Emmetropia

B) Myopia

C) Hyperopia

B) Myopia

According to the Speckle Effect, if a patient observes with motion what type of refractive error do they most likely have?

A) Emmetropia

B) Myopia

C) Hyperopia

C) Hyperopia

Estimating a patient's pinhole acuity utilizes which of the following?

A) Spectacle magnification

B) Speckle effect

C) Rayleighs Criterion

D) Weber's law

C) Rayleighs Criterion

What is the formula for estimating pinhole acuity?

MAR= 2.33/d

d= diameter of pupil

What is the formula for an ideal antiglare coating material?

nf= (n1 x nl)^1/2

n1= index of air

nl= index of lens

What phenomenon explains why the sky is blue and why the sky has a reddish-hue during sunset?

A) Rayleigh scattering

B) Tyndall scattering

C) Speckle effect

D) Troxler effect

A) Rayleigh scattering

What phenomenon explains why the clouds are white?

A) Rayleigh scattering

B) Tyndall scattering

C) Speckle effect

D) Troxler effect

B) Tyndall scattering

Brewster's Law is most associated with ______________.

A) Polaroid sunglasses

B) Estimated pinhole acuity

C) Color vision

D) Dark adaptation

A) Polaroid sunglasses

When unpolarized light is incident on a polarizer, the intensity of the light transmitted is _______________ the incident light.

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