1. For three people, their eyeglass prescriptions specify the following: +3D, -3
ID: 1284497 • Letter: 1
Question
1. For three people, their eyeglass prescriptions specify the following: +3D, -3D and bifocals. These three people are, respectively
A. Hyperopic, myopic, presbyopic B. Astigmatic, myopic, presbyopic C. Myopic, presbyopic, hyperopic D. None of the above
2.
The far point of a near-sighted person
is usually closer than 25 cm from the eye
is at infinity
is usually farther than 25 cm from the eye but less than infinity
is 25 cm from the eye
3.
As a person ages, their eyelenses become less and less able to squeeze themselves into the proper shape needed to bring light from nearby sources into a focus on the retina. This occurs because
The eyelens changes shape as we age
The index of refraction of the eyelens becomes smaller as we age
Additional layers form on the eyelens, insulating it from the vitreous humor liquid and making it less flexible
The eyelens moves farther into the eye as we age
4. For three people, their eyeglass prescriptions specify the following: +3D, -3D and bifocals. These three people are, respectively
Hyperopic, myopic, presbyopic
Astigmatic, myopic, presbyopic
Myopic, presbyopic, hyperopic
None of the above
A.is usually closer than 25 cm from the eye
B.is at infinity
C.is usually farther than 25 cm from the eye but less than infinity
D.is 25 cm from the eye
Explanation / Answer
1) A
2)A
3)B
4)A
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