POST TEST FOR MODULE 23:  The Posterior Segment, Part 1        Catalog

                                                                   

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1. Which is not true of floaters?

A. they can be a symptom of the normally aging eye

B. they can be a symptom of a retinal tear 

C. they are located in the aqueous

D. they can settle out of sight                 

2. A vitreous hemorrhage can be removed with a procedure called  ______ .

A. a lensectomy

B. diathermy

C. cryotherapy

D. a vitrectomy 

3. Arteries and veins coming from the optic nerve head form inferior and superior _____ .

A. arcades

B. sectors

C. junctions

D. tunnels 

4. The optic nerve enters the back of the eye in the _____ quadrant.

A. nasal

B. temporal

C. superior

D. inferior     

5. Which layer of the retina does light strike first?

A. nerve fiber layer

B. ganglion cells

C. rods and cones

D. pigment epithelium             

6. Which cells are color sensitive and are concentrated in the macula?

A. rods

B. cones

C. bipolar cells

D. ganglion cells

7. It takes the rods about ____ minutes to dark adapt.

A. 5

B. 10

C. 15

D. 30       

8. Which wavelength of light is the retina not sensitive to?

A. red

B. blue

C. green

D. infra-red                                    

9. Which is the most common type of color vision deficiency?

A. red/green

B. blue/yellow

C. red/yellow

D. blue/green         

10. Which is not a color plate test?

A. Ishihara

B. Farnsworth

C. H-R-R

D. SPP   

11. Which is not proper procedure for color vision testing?

A. wear reading glasses if needed

B. wearing tinted glasses is OK

C. view plates at 30 inches

D. daylight illumination is good 

12. The retinal nerve fiber layer is normally opaque.

A. true

B. false

13. Which layer gives color to the retina?

A. NFL

B. ganglion cells

C. bipolar cells

D. RPE

14. The fovea has retinal blood vessels over it.

A. true

B. false

15. Which electrophysiology procedure tests the function of the RPE layer?

A. VER

B. ERG

C. EOG

D. XYZ