Ch. 12 Flashcards Preview

Building a Medical Vocabulary > Ch. 12 > Flashcards

Flashcards in Ch. 12 Deck (40)
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1

Conjunctiva

Mucous membrane lining inner surface of eyelid and acts as protective covering for exposed surface of eye

2

Choroid

Dark brown vascular membrane inside the sclera, continuous with the iris and the ciliary body on anterior surface of eye

3

Optic disk

Region of eye where optic nerve meets retina, lacks light receptors and therefore causes blind spot

4

Daltonism

Sex linked disorder causing weakness in perceiving colors distinctly

5

Achromatic vision

Inability to see any color at all

6

Dacry(o)

Pertaining to tears

7

Kerat(o)

Pertaining to cornea

8

Presby(o)

Pertaining to old or old age

9

Snellen chart

A chart for measuring visual acuity

10

Tonometry

Measure of intraocular pressure using a tonometer

11

Mydriatic

Agent that dilates the pupil

12

Fluorescein angiography

Use of fluorescent dye to study movement of blood through vessels in the eye

13

Presbyopia

Hyperopia impairment of vision due to advancing years or old age

14

Hyperopia

Farsightedness, inability of eyes to focus on nearby objects

15

Myopia

Nearsightedness, inability of eyes to focus on far away objects

16

Astigmatism

Uneven focusing of an image resulting from distortion in curvature of lens or cornea

17

Ambylopia/strabismus

Reduced vision in one eye, also known as lazy eye or cross eye

18

Cataract

Abnormal progressive condition of the lens characterized by loss of transparency

19

Dacryocystitis

Inflammation of the lacrimal sac caused by obstruction of the lacrimal ducts

20

Glaucoma

Abnormal condition of increased pressure in the eye, prolonged pressure can damage retina or optic nerve

21

Hordeolum

Stye, resulting from infected sebaceous gland of the eyelash

22

Macular degeneration (MD)

Progressive deterioration of the retina associated with new vessel formation that can progress to blindness

23

Nyctalopia

Poor vision at night or in dim light

24

Photophobia

Excessive sensitivity of eyes to light

25

Blepharoplasty

Surgical repair of the eyelid to repair ptosis

26

Opthalmic cryosurgery

Use of extreme cold to remove a cataract or to cause edges of detached retina to heal

27

LASIK abbreviation

Laser assisted in situ keratomileusis

28

Intraocular lens transplant

Replacing the lens with an artificial one

29

Cerumen

Brown waxy substance that lubricates and protects the ear

30

Auditory/eustachin tube

Leads from middle ear to pharynx, equilizes middle ear pressure to atmospheric pressure