ABO Exam Questions & Answers
Name the 3 types of tunics of the eye, and what areas of the eye they consist of. - ANSWER-1. Fibrous: cornea and sclera (outer protective coating)
2. Vascular: iris, ciliary body and choroid (uveal tract)
3. Neural: retina
During accommodation, what 3 thing...
ABO Exam Questions & Answers
Name the 3 types of tunics of the eye, and what areas of the eye they consist of. - ANSWER-1. Fibrous:
cornea and sclera (outer protective coating)
2. Vascular: iris, ciliary body and choroid (uveal tract)
3. Neural: retina
During accommodation, what 3 things do the eyes do? - ANSWER-1. Ciliary muscle relaxes allowing for
thickening of crystalline lens
2. Eyes converge
3. Pupils constrict
What happens with Aniseikonia? - ANSWER-The ocular image of an object with one eye differs in
size/shape from the other eye; cannot fuse into one image.
Difference between Anisemetropia and Antimetropia? - ANSWER-1. Anisemetropia: refractive errors
differ greatly, but same sign.
2. Antimetropia: signs in each eye is different; one plus one minus.
What is diplopia? - ANSWER-Seeing double vision
What do Iseikonic lenses do? - ANSWER-Manipulate image size when dissimilar sizes makes it difficult to
fuse images.
What is a scotoma? - ANSWER-A blind area of reduced vision in the visual field
"Fusion" occurs where? - ANSWER-In the brain
, The aqueous fluid is continually being manufactured by what? - ANSWER-The ciliary body
The space between the back of the iris and the front of the lens which is filled with aqueous is the what?
- ANSWER-Posterior chamber
The transparent, colorless mass of soft, gelatinous material which fills the eyeball behind the lens is the:
- ANSWER-Vitreous humor
What is the index of refraction for parts of the eye: cornea, crystalline lens, aqueous humor, vitreous
humor. - ANSWER-Cornea: 1.37
Crystalline lens: 1.42
Aqueous humor: 1.33
Vitreous humor: 1.33
Metric system: One meter is equal to... - ANSWER-One meter= 39.37 inches (1 inch=25.24mm)
One meter=
10 decimeters or .1
100 centimeters or .01
1000 millimeters or .001
micro (millionth) or .000001
nanometers (billionth) or .000000001
1mm=1 million nanometers
1 kilo=1,000 meters
The visual spectrum of light is measured in:
The wavelength range of the visible spectrum is from _ to _?
Range of long UV? - ANSWER-1. nanometers
2. 390-750 nanometers
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