ABO Exam Questions and Answers 2023 Complete;100%
verified
Name the 3 types of tunics of the eye, and what areas of the eye they consist of.
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?
1. Ciliary muscle relaxes allowing for thickening of crystalline lens
2. Eyes converge
3. Pupils constrict
What happens with Aniseikonia?
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?
1. Anisemetropia: refractive errors differ greatly, but same sign.
2. Antimetropia: signs in each eye is different; one plus one minus.
What is diplopia?
Seeing double vision
What do Iseikonic lenses do?
Manipulate image size when dissimilar sizes makes it difficult to fuse images.
What is a scotoma?
A blind area of reduced vision in the visual field
"Fusion" occurs where?
In the brain
The aqueous fluid is continually being manufactured by what?
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?
Posterior chamber
The transparent, colorless mass of soft, gelatinous material which fills the eyeball
behind the lens is the:
Vitreous humor
What is the index of refraction for parts of the eye: cornea, crystalline lens,
aqueous humor, vitreous humor.
Cornea: 1.37
Crystalline lens: 1.42
Aqueous humor: 1.33
Vitreous humor: 1.33
Metric system: One meter is equal to...
One meter= 39.37 inches (1 inch=25.24mm)
One meter=
10 decimeters or .1
verified
Name the 3 types of tunics of the eye, and what areas of the eye they consist of.
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?
1. Ciliary muscle relaxes allowing for thickening of crystalline lens
2. Eyes converge
3. Pupils constrict
What happens with Aniseikonia?
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?
1. Anisemetropia: refractive errors differ greatly, but same sign.
2. Antimetropia: signs in each eye is different; one plus one minus.
What is diplopia?
Seeing double vision
What do Iseikonic lenses do?
Manipulate image size when dissimilar sizes makes it difficult to fuse images.
What is a scotoma?
A blind area of reduced vision in the visual field
"Fusion" occurs where?
In the brain
The aqueous fluid is continually being manufactured by what?
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?
Posterior chamber
The transparent, colorless mass of soft, gelatinous material which fills the eyeball
behind the lens is the:
Vitreous humor
What is the index of refraction for parts of the eye: cornea, crystalline lens,
aqueous humor, vitreous humor.
Cornea: 1.37
Crystalline lens: 1.42
Aqueous humor: 1.33
Vitreous humor: 1.33
Metric system: One meter is equal to...
One meter= 39.37 inches (1 inch=25.24mm)
One meter=
10 decimeters or .1
