Asked by Ayesha Williams on May 11, 2024
Verified
If light rays are not focused evenly on the retina, a fuzzy image is formed. This condition is called
A) nearsightedness.
B) farsightedness.
C) astigmatism.
D) cataracts.
E) conduction deafness.
Astigmatism
Uneven shape of the cornea or lens of the eye; causes a distortion in the light reaching the retina of the eye.
Nearsightedness
A common vision condition where one can see objects near to them clearly, but objects farther away are blurry. Also known as myopia.
Farsightedness
A vision condition where distant objects are seen more clearly than near objects due to the shape of the eyeball.
- Identify the conditions affecting vision and their characteristics.
Verified Answer
BE
Bangs EncarnacionMay 11, 2024
Final Answer :
C
Explanation :
Astigmatism occurs when there is a distortion in the shape of the cornea, causing light rays to be refracted unevenly and resulting in a fuzzy or distorted image on the retina. Nearsightedness and farsightedness are caused by the eyeball being too long or too short, respectively, and affect the ability to focus on objects at varying distances. Cataracts involve clouding of the lens of the eye and can cause blurry vision, but not necessarily a fuzzy image. Conduction deafness refers to hearing loss caused by damage to the outer or middle ear, and is not related to visual acuity.
Learning Objectives
- Identify the conditions affecting vision and their characteristics.