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OPTHALMOLOGY > DEFINITIONS > Flashcards

DEFINITIONS Flashcards

1
Q

Accommodation

A

The adjustment of the eye for seeing at different distances. Produced by change in shape of the lens, especially the anterior eye.

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2
Q

Adnexal

A

Structures attached to the eye. Ocular adnexa include the: Orbits. Extraocular muscles. Eyelids.

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3
Q

Anophthalmia

A

ABSENCE OF EYE

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4
Q

Ankyloblepharon

A

ADHESIONS OF EYELIDS

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5
Q

Blepharitis

A

INFLAMMATION OF EYELIDS

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6
Q

Buphthalmos

A

ENLARGED GLOBE

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7
Q

Cataract

A

OPACITY OF LENS OR ITS CAPSULE

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8
Q

Chemosis

A

ODEMA OF THE CONJUNCTIVA

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9
Q

COLOBOMA

A

An absence or defect of some ocular tissue, usually resulting from a failure of part of the embryonic cleft and seen as a notch, hole, fissure, or cleft.

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10
Q

Cyclitis

A

INFLAMMATION OF CILIARY BODY

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11
Q

CORPORA NIGRA

A

(a.k.a. granula iridica) irregular oval bodies on dorsal and sometimes on the ventral pupillary edges of the iris in herbivores.

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12
Q

CYCLODIALYSIS

A

Surgical procedure which establishes communication between the anterior chamber and the suprachoroidal space to relieve intra-ocular pressure

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13
Q

Dacryoadenitis

A

INFLAMMATION OF LACRIMAL GLAND

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14
Q

Dacryocystitis

A

INFLAMMATION OF LACRIMAL SAC

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15
Q

DERMOID

A

A congenital mass consisting of skin and its dermal appendages, often affecting the eyelid, conjunctiva, and/or cornea

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16
Q

DESCMETOCELE

A

Protrusion of Descemets membrane at the base of a deep ulcer

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17
Q

DIOPTER

A

Refractive power of lens, equal to the reciprocal of the focal length of the lens, expressed in metres
REFRACTIVE POWER OF LENS IN METERS

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18
Q

DISTICHIASIS

A

Presence of two rows of eyelashes on one lid

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19
Q

DYSPLASIA

A

Disorderly cellular proliferation during embryonic life

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20
Q

ECTROPION

A

Rolling out of eyelid margin.

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21
Q

ENOPHTHALMOS

A

A recession of the eyeball within the orbit

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22
Q

EPIPHORA

A

An overflow of tears

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23
Q

EXOPHTHALMOS

A

A protrusion or prominence of the eyeball

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24
Q

GLAUCOMA

A

Increase in intraocular pressure beyond that compatible with normal ocular physiology and function

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25
Q

HORDEOLUM

A

(Sty) An inflammation of a sebaceous gland (gland of Zeiss) of the eyelid.

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26
Q

HYPHEMA

A

Haemorrhage into the anterior chamber

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27
Q

HYPOPYON

A

nflammatory cells in anterior chamber.

28
Q

INTUMESCENT LENS

A

Swollen or enlarged lens

29
Q

IRIS BOMBE

A

Forward bulging of the iris caused by increase of fluid in posterior chamber following a 360-degree posterior synechia

30
Q

IRIDODONESIS

A

Tremulousness of iris, seen in aphakia or subluxated lens.

31
Q

KERATECTOMY

A

Excision of part of the cornea

32
Q

KERATOCONUS

A

Cone shaped deformity of cornea; corneal thinning at corneal apex

33
Q

KERATOPLASTY

A

Corneal grafting.

34
Q

LAGOPHTHALMOS

A

Inability to completely close the eyelids.

35
Q

LEUKOMA

A

A white, opaque corneal opacity

36
Q

MICROPHTHALMUS

A

An eye which is smaller than normal and imperfectly developed.

37
Q

MIOSIS

A

Pupillary constriction

38
Q

MYDRIASIS

A

PUPIL DILATION

39
Q

NEBULA

A

Slight haziness.

40
Q

NYCTALOPIA

A

Night blindness.

41
Q

NYSTAGMUS

A

Rhythmical oscillation of the eyeball, either horizontal, rotary, or vertical

42
Q

OPHTHALMOPLEGIA

A

Paralysis of one or more muscles of the eye.

43
Q

PANNUS

A

Newly formed vascular tissue involving the cornea

44
Q

PHTHISIS BULBI

A

Shrinking of the eyeball following uveitis or other inflammatory disease.

45
Q

PTOSIS

A

Drooping of upper eyelid

46
Q

RETINAL DYSPLASIA

A

Abnormal embryonic development of the retinal layers

47
Q

STRABISSMUS

A

Deviation of the visual axes of the eye

48
Q

SICCA

A

DRY

49
Q

STAPHYLOMA

A

Protrusion of cornea or sclera usually produced by softening from inflammation and lined with uveal tissue

50
Q

SYMBLEPHARON

A

Adhesion of one or both eyelids to the eyeball

51
Q

SYNECHIA

A

An adhesion of iris to cornea (anterior synechia) or iris to lens (posterior synechia)

52
Q

TRICHIASIS

A

Abnormal deviation/inversion of the normal eyelashes, causing irritation of the cornea or conjunctiva.

53
Q

UVEAL TRACT

A

Iris, ciliary body and choroid. The anterior uveal tract refers to the iris and ciliary body. The posterior uveal tract refers to the choroid.

54
Q

VITREOUS SYNERESIS

A

Vitreous liquefaction

55
Q

OD

A

OCULUS DEXTRUS
RIGHTT EYE

56
Q

OS

A

OCULUS SINISTER
LEFT EYE

57
Q

OU

A

OCULUS UTERQUE
BOTH EYES

58
Q

BLEPHAROSPASM

A

PAIN IN THE EYE

59
Q

HYPEREMIA

A

ENGORGEMENT OF VASCULAR BEDS WITH NORMAL OR DECREASED BLOOD FLOW

60
Q

GONIODYSGENESIS

A

AKA PECTINATE LIGAMENT DYSPLASIA
- INHERITED RISK FACTOR FOR PRIMARY CLOSED ANGLE GLAUCOMA IN DOGS

61
Q

CYCLOCRYOTHERAPY

A

POINT FREEZING SCLERA OVERLYING THE CILIARY BODY
- DAMAGES SECRETORY EPITHELIAL STROMAL VESSELS

62
Q

ENDOCYCLOPHOTOCOAGULATION

A

DAMAGES CILIARY BODY WITH LASER

63
Q

CYCLODIATHERMY

A

USES HEAT TO DAMAGE CILIARY BODY

64
Q

EVISCERATION

A

REMOVAL OF ALL INTRAOCULAR CONTENTS BUT PRESERVING THE ORBITAL ADNEXA, MUSCLES AND SCLERAL SHELL

65
Q

ENUCLEATION

A

REMOVAL OF THE EYE FROM ORBIT
- RECOMMENDED FOR INTRA OCULAR NEOPLASIAS
- EVERYTHING IS REMOVED TOGETHER

OPTHALMOLOGY (5 decks)

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