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Vocab optical > Vocab > Flashcards

Vocab Flashcards

1
Q

What is the Adnexa Oculi

A

aceessory structures of the eye, such as the lacrimal apparatus and the
eyelids.

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2
Q

Albinism

A

hereditary loss of pigment in the eye, skin and hair; usually associated with lowered visual acuity, nystagmus and light sensitivity.

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3
Q

Amblyopia

A

loss of vision without any apparent disease of the eye.

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4
Q

Ametropia

A

a refractive error in which the eye, when in a state of rest, does not focus the image of an object upon the retina; includes hyperopia, myopia and astigmatism.

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5
Q

Aniridia

A

congenital absence of the iris.

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6
Q

Aniseikonia

A

a condition in which the ocular image of an object as seen by one eye differs
so much in SIZE or shape from that seen by the other eye that the two images cannot be
fused into a single impression.

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7
Q

Aniscoria

A

inequality of the pupils in diameter.

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8
Q

Anophthalmia

A

absence of a true eyeball.

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9
Q

Aphakia

A

absence of the crystalline lens of the eye.

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10
Q

Arcus Senilus

A

grayish white ring in the periphery of the cornea.

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11
Q

Asthenopia

A

eye fatigue caused by tiring of the internal and / or external muscles.

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12
Q

Bedewing (Cornea)

A

an edematous condition of the epithelium of the cornea characterized
by irregular reflecting from a multitude of droplets when the cornea is viewed with the
slit lamp.

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13
Q

Blepharoconiunctivitis

A

inflammation of the eyelid and conjunctiva.

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14
Q

Blepharoplasty

A

plastic surgery of the eyelid.

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15
Q

Blepharoptisis

A

drooping of the upper eyelid.

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16
Q

Buphthalmos

A

enlargement of the eyeball, resulting usually from congenital (infantile)
glaucoma.

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17
Q

Canaliculus

A

passageway for drainage of tears from eyes to tear sac.

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18
Q

Chemosis

A

severe edema of the conjunctiva.

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19
Q

Chorioretinitis

A

Inflammation of the choroids and retina.

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20
Q

Coloboma

A

congenital cleft in the IRIS due to the failure of the eye to complete growth in the part
affected.

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21
Q

Cyclitis

A

inflammation of the ciliary body.

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22
Q

Cycloplegic

A

drug that temporarily puts the ciliary muscle at rest and dilates the pupil;
often used to ascertain the error of refraction.

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23
Q

Dacryocystitis

A

inflanlmation of the lacrimal sac.

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24
Q

Dacryocystitis

A

Inflammation of the lacrimal sac.

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25
Q

Dellen

A

a depressed area on the cornea which shows stain due to lack of wetting from the
pre-corneal tear film. It is generally found adjacent to an elevated area.

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26
Q

Dendritic Keratitis

A

fernlike projection on the cornea from herpes simplex.

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27
Q

Diplopia

A

Double Vision

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28
Q

Districhiasis

A

Iashes growing from the openings of meibomian glands.

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29
Q

Ectropion

A

an eversion or turning outward of the eyelid.

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30
Q

Entropion

A

Turning inward of the eyelid.

31
Q

Enucleation

A

Complete surgical removal of the eyeball.

32
Q

Epiphora

A

Excessive tearing causing an overflow onto the face.

33
Q

Esophoria

A

Tendency of the eye to turn inward

34
Q

Esotropia

A

manifest turning inward of the eye (convergent strabismus or crossed eye).

35
Q

Exophoria

A

tendency of the eye to turn outward.

36
Q

Exophthalmos

A

Abnormal protrusion of the eyeball.

37
Q

Exotropia

A

abnormal turning outward from the nose of one or both eyes (divergent strabismus).

38
Q

Farsightedness

A

hyperopia.

39
Q

Fornix

A

a loose fold of the conjunctiva, occurring where that part of the conjunctiva covering
the eyeball meets the conjunctiva lining the eyelid

40
Q

Fuch’s Dystrophy

A

Edema in the stroma associated with scarring on both the endothelium
and the epithelium

41
Q

FundUS-

A

inside of the eye, primarily the retina, the optic disc and the retinal vessels that can
be seen with an ophthalmoscope.

42
Q

Heterotropia

A

-an obvious or manifest deviation of visual axis of an eye out of alignment
with the other eye. Synonyms are “cross-eye” and “strabismus.”

43
Q

Hyphema

A

Pooling of blood in the anterior chamber of the eye.

44
Q

Keratectomy

A

removal of a portion of the cornea.

45
Q

Keratitis

A

-inflammation of the cornea; frequently classified as to type of inflammation and
layer of cornea affected; for example, interstitial keratitis and phlyctenular kerati tis.

46
Q

Keratitis Sicca

A

dryness of the cornea.

47
Q

Keratoconus

A

a non-inflammatory corneal dystrophy in which the cornea becomes curved
or conical in shape

48
Q

Keratoplasty

A

Corneal transplant operation.

49
Q

Lagophthalmos

A

a condition in which the lids do not completely close.

50
Q

Lamellar Keratoplasty

A

Operation in which only the diseased outer layers of the cornea
are removed and the healthy donor cornea is sutured on as a replacement.

51
Q

Macrophthalmia

A

Abnormally large eyeball, resulting chiefly from infantile glaucoma.

52
Q

Microphthalmia

A

An abnormally small eyeball.

53
Q

Miotic

A

drug that causes the pupil to contract.

54
Q

Mydriatic Agent

A

drug that dilates the pupil.

55
Q

Nebula

A

FAINT or SLIGHTLY misty corneal opacity

56
Q

Nystagmus

A

An involuntary oscillating, rapid movement of the eyeball. It may be lateral,
vertical, rotary or mixed.

57
Q

Pannus

A

invasion of the peripheral cornea by infiltration and formation of new blood
vessels.

58
Q

Penetrating Keratoplasty

A

Operation to restore vision by replacing a section of opaque

cornea.

59
Q

Phacoemulsification

A

emulsification of a cataractous lens by ultrasound, permitting the
material to be removed by aspiration.

60
Q

Proptosis

A

Protrusion of the eye.

61
Q

Ptosis (Blepharoptosis )-

A

a drooping of the upper eyelid.

62
Q

The index of refraction of the crystalline lens is:

A

1.42

63
Q

The cornea has an index of refraction of:

A

1.37

64
Q

The index of refraction of any given transparent material can be determined by:

A

dividing the speed of light in air by the speed of light in the material.

65
Q

The speed of light in air is approximately

A

186,000 miles per second

66
Q

The theory describes light as traveling through space in minute bursts of energy

A

corpuscular

67
Q

The range of wavelengths which are perceived as visible light can vary with the individual, it is
generally understood to lie between:

A

390 and 750 nanometers

68
Q

To determine the power of a thin lens in air, it is necessary to consider:

A

front curve, back curve and index of refraction

69
Q

Toric transposition is used to determine

A

lens power in the principal meridians

70
Q

Corrected curve lenses are designed to

A

increase the useful area of the lens

71
Q

The power of a cylinder along its axis contains

A

no cylinder power

72
Q

It is important to consider vertex distance in spectacle lenses when the power exceeds:

A

7.00 D

73
Q

The refractive index of polycarbonate is

A

1.590

74
Q

The minimum fitting height for most progressive addition lenses is

A

22-25 mm depending on the brand

Vocab optical (2 decks)

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