CH # 21: Eye & Ear Assessment & Procedures

Question 1

A refractive error that causes distorted and blurred vision 4 both near and far objects

This is due 2 a cornea that is oval shaped which causes the light rays to b concentrated on 2 points on the retina instead of 1

Often occurs w/myopia or hyperopia

Answer 1

Astigmatism

Question 2

An instrument used 2 measure hearing acuity and quantitatively 4 the various frequencies of sound waves

Answer 2

Audiometer

Question 3

The junction of the eyelids at either corner of the eye

Answer 3

Canthus

Question 4

2 names 4 a yellowish waxy substance secreted by glands in the ear canal which functions 2 lubricate and protect the ear canal

Answer 4

Cerumen

Earwax

Question 5

An error of refraction: Farsightedness; a problem seeing objects at a reading or working distance

The eyeball is 2 short from front 2 back causing the light rays 2 b focused behind the retina. Corrective lenses cause the light rays 2 come in2 focus on the retina

Symptoms: blurred vision, headaches and eye strain while performing up close tasks

Answer 5

Hyperopia

Question 6

Wedged firmly together so as 2 b immoveable

Answer 6

Impacted

Question 7

The dropping of a liquid in2 a body cavity

Answer 7

Instillation

Question 8

The washing of a body canal w/a flowing solution

Answer 8

Irrigation

Question 9

An error of refraction: Nearsightedness; difficulty seeing objects at a distance

The eye ball is 2 long from front 2 back causing the light rays 2 b focused in front of the retina. Corrective lenses or laser surgery cause the light rays 2 b focused on the retina

Symptoms: squinting and headaches resulting from eye strain

Answer 9

Myopia

Question 10

An instrument used 2 examine the external ear canal and tympanic membrane

Answer 10

Otoscope

Question 11

An error of refraction that is caused by a decrease in the elasticity of the lens that occurs w/aging(after age 40), resulting in a decreased ability 2 focus on close objects

Can b corrected w/corrective lenses: reading glasses

Answer 11

Presbyopia

Question 12

The deflection or bending of light rays by a lens

Answer 12

Refraction

Question 13

2 names 4 a thin transparent membrane between the external ear canal and the middle ear that receives and transmits sound waves

Answer 13

Tympanic membrane

Eardrum

Question 14

Refers 2 acuteness or sharpness of vision

Answer 14

Visual acuity

Question 15

A physician who specializes in diagnosing and treating diseases and disorders of the eye

Qualified 2 prescribe ophthalmic and systemic medications and preform eye surgery

Answer 15

Ophthalmologist

Question 16

A non-physician who specializes in measuring visual acuity and prescribing corrective lenses 4 the treatment of refractive errors

Qualified 2 diagnose and treat disorders and diseases of the eye and 2 prescribe ophthalmic medications but NOT systemic medications or conduct eye surgery

Answer 16

Optometrist

Question 17

A professional who interprets and fills prescriptions 4 eye glasses and contact lenses

Answer 17

Optician

Question 18

The most often used chart to evaluate distance visual acuity (DVA)

2 types of charts:
-letters in descending sizes; for adults and school children
-capital E in descending sizes and varying directions; for preschool
children or non English speaking patients

Consists of 2 numbers:
Top number; usually 20 because the test is normally conducted at
20 feet away from chart
Bottom number; the distance from which a person w/normal visual
acuity can read the row of numbers

Answer 18

Snellen eye charts