Question

1. Given these test results

   Weber - louder in right ear

   Rinne - Negative for right ear, and positive for left ear

   Which ear if either, has hearing loss and what kind of hearing loss is it?

   		Left ear has sensorineural hearing loss.
   		Left ear has conductive hearing loss.
   		Right ear has sensorineural hearing loss.
   		Right ear has conductive hearing loss.
   		Neither ear has hearing loss.

1. Color blindness is due to what?

   	A.	a lack of all three types of pigments in the cones of the eye
   	B.	sex-linked genetic condition which means the gene for color blindness is on an X chromosome
   	C.	watching too many videos as a child
   	D.	Both A and B

1. If the vision in your left eye is 20/250, this means you can see clearly at ____________ feet what a person with normal vision could see at ___________________.

   	A.	20, 250
   	B.	250, 20
   	C.	None of these

What kind of lens corrects nearsightedness, also called myopia?

1. 	A.	convex
   	B.	concave
   	C.	Both of these
   	D.	None of these

Answer 1

1.

Given these test results

Weber - louder in the right ear

Rinne - Negative for the right ear, and positive for left ear

This indicates the Right ear has conductive hearing loss.

If there is a problem with the transfer of sound waves through the outer ear, eardrum(tympanic membrane) or ossicles is known as conductive hearing loss.

2.

Color blindness is due to

A. a lack of all three types of pigments in the cones of the eye and

B. a sex-linked genetic condition which means the gene for color blindness is on an X chromosome.

Answer - D. both A and B

Due to genetic abnormality, there is an absence of pigments that cause colorblindness.

3.

If the vision in your left eye is 20/250, this means you can see clearly at 20 feet what a person with normal vision could see at 250 feet.

Answer - A. 20, 250

4.

Concave lens corrects nearsightedness, also called myopia.

Answer - Concave

Myopia is nearsightedness which is corrected by a lens that is thin at the center and becomes thicker towards the edge(concave lens).