Ncle Glossary

Front 1

ABRASION

Back 1

RUBBING OF THE SUPERFICIAL LAYER

Front 2

ACUITY

Back 2

CLEARNESS, VISUAL ACUITY IS MEASURED BY THE SMALLEST OBJECT THAT CAN BE SEEN AT A CERTAIN DISTANCE

Front 3

ADNEXA OCULT

Back 3

ACCESSORY STRUCTURES OF THE EYE , SUCH AS THE LACRIMAL APPARATUS AND THE EYELIDS

Front 4

AFTERIMAGE

Back 4

IMAGE OF AN OBJECT THAT PERSIST WHEN THE LIDS ARE CLOSED

Front 5

ALBINISM

Back 5

HEREDITARY LOSS OF PIGMENT IN THE EYE,SKIN AND HAIR ; USUALLY ASSOCIATED W / LOWERED VISUAL ACUITY , NYSTAGMUS AND PHOTOPHOBIA

Front 6

ANIRIDIA

Back 6

CONGENITAL ABSENCE OF IRIS

Front 7

ANNULAR BIFOCAL CONTACT

Back 7

A LENS W/ DISTANCE PORTION GROUND INTO THE CENTER OF THE LENS AND THE NEAR PORTION GROUND INTO THE PERIPHERY

Front 8

APICAL ZONE OF CORNEA

Back 8

THE CENTRAL PORTION OF THE CORNEA WITH THE CONSTANT RADIUS OF CURVATURE.

AKA CORNEAL CAP

Front 9

ARCUS SENILUS

Back 9

GRAYISH WHITE RING IN THE PERIPHERY OF THE CORNEA

Front 10

ARTIFICIAL TEARS

Back 10

WETTING AGENT FOR THE CORNEA TO SUPPLEMENT THE LOSS OF TEAR FORMATION

Front 11

CANTHUS

Back 11

THE ANGLE AT EITHER END OF THE SLIT BTW. THE EYELIDS; SPECIFIED AS OUTER ( TEMPORAL)

AND INNER ( NASAL)

Front 12

CHORD LENGTH

Back 12

THE STRAIGHT LINE MEASUREMENT OF THE CONTACT LENS DIAMETER FROM THE EDGE TO EDGE

Front 13

CHALAZION

Back 13

INFLAMMATORY ENLARGEMENT OF THE MEIBOMIAN GLAND OF THE EYELID

Front 14

CHEMOSIS

Back 14

SEVERE EDEMA OF THE CONJUNCTIVA

Front 15

CIRCUMCORNEAL INJECTION

Back 15

REDNESS AROUND THE LIMBUS SURROUNDING THE CORNEA

Front 16

CONTACT LENS WETTING ANGLE

Back 16

ANGLE BTW. THE LIQUID AND THE LENS SURFACE

Front 17

CONTOUR LENS

Back 17

A TRICURVE LENS DESIGNED TO CONFORM TO THE CURVATURE OF THE CORNEA, WHICH

FLATTENS AS IT EXTENDS IN THE PERIPHERY

Front 18

COPOLYMER

Back 18

TWO OR MORE CHEMICAL THAT ARE COMBINED TO FORM A NEW CHEMICAL COMPOUND

Front 19

CORNEAL DIAMETER

Back 19

DIAMETER OF THE CORNEA, USUALLY TAKEN ALONG THE HORIZONTAL MERIDIAN WITH A RULER.

AKA VISIBLE IRIS DIAMETER

Front 20

CORNEAL EDEMA

Back 20

SWELLING OF THE CORNEA CAUSED BY HYPOXIA OR INSUFFICIENT OXYGEN

Front 21

DELLEN

Back 21

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

Front 22

DETURGENCE, CORNEAL

Back 22

THE STATE OF RELATIVE DEHYDRATION MAINTAINED BY THE NORMAL INTACT CORNEA THAT ENABLES IT TO REMAIN TRANSPARENT

Front 23

DIAGNOSTIC FITTING SET

Back 23

A SET OF TRIAL LENSES USED TO GAIN AN OVERVIEW OF THE FIT OF A CONTACT LENS

Front 24

Disinfection

Back 24

physical or chemical procedures that kill common pathogenic organisms but may permit some nonpathogenic organisms to survive

Front 25

DK VALUE

Back 25

A MEASURE OF THE OXYGEN PERMEABILITY THROUGH A GIVEN MATERIAL WHERE D

IS THE DIFFUSION COEFFICIENT FOR OXYGEN MOVEMENT ON THE LENS MATERIAL AND K IS THE SOLUBILITY OF THE OXYGEN IN THIS MATERIAL

Front 26

DOUBLE SLAB OFF LENS

Back 26

SOMETIMES CALLED THICK-THIN LENSES; UPPER AND LOWER PORTIONS OF THE LENS ARE REDUCED IN THICKNESS SO THAT WHEN THE LENS IS PLACED ON THE EYE THESE PORTIONS LIE UNDER THE UPPER AND LOWER LID.

THE THIN ZONES AID IN STABILIZING TORIC SOFT LENS

Front 27

DRY SPOTS

Back 27

AREA OF DRYING AS NOTED BY ABSENT AREAS FLUORESCEIN-STAINED TEAR FILM ON THE CORNEA WHEN THE PATIENT STARES

Front 28

DYER NOMOGRAM SYSTEM OF LENS ORDERING

Back 28

A SIMPLIFIED SYSTEM OF ORDERING RIGID LENSES BASED ON CLINICAL EXPERIENCE, CORNEAL TOPOGOMETRY, AND CHARTS OF ASSOCIATED LENS PARAMETERS

Front 29

ECTROPION

Back 29

AN EVERSION OR TURNING OUTWARD OF THE

Front 30

ENDOPHTHALMITIS

Back 30

AN INFLAMMATION OF THE ENTIRE EYE INCLUDING THE OUTER COATS

Front 31

ENTROPION

Back 31

TURNING INWARD OF THE EYELID

Front 32

ENZYME CLEANER

Back 32

A CLEANING AGENT THAT ACTS ON A SOFT LENS BY digestion of protein

Front 33

EPITHELIAL EDEMA

Back 33

EDEMA OF THE SUPERFICIAL LAYER OF THE CORNEA

Front 34

ESTHESIOMETER

( COCHET - BONNET )

Back 34

A DEVICE USED TO EVALUATE CORNEAL SENSITIVITY, CONSISTING ESSENTIALLY OF A NYLON THREAD MOUNTED IN A HANDLE SO THAT ITS LENGTH MAY BE VARIED AND CALIBRATED IN MILLIGRAMS OF WEIGHT NECESSARY TO BEND A GIVEN LENGTH OF THE THREAD WHEN PRESSED AGAINST THE CORNEA

Front 35

EVERSION OF THE EYELID

Back 35

THE FOLDING BACK OF THE EYELID ON ITSELF

Front 36

FISSURE

Back 36

ELLIPTIC SPACE BTW.THE EYELIDS

Front 37

FINISHED LENS

Back 37

A COMPLETE LENS WITH ANTERIOR AND POSTERIOR CURVES, A SPECIFIED DIAMETER, A DESIGNATE PERIPHERAL CURVE, AND EDGE DESIGN

Front 38

FITTING SET

Back 38

A COMPLETE INVENTORY OF LENSES OF GRADUATED POWERS AND BASE CURVE

Front 39

FLARE

Back 39

FLUTTERING OR FRINGING OF LIGHTS CAUSED BY A LENS WITH AN OPTIC ZONE TOO SMALL AS A DECENTERED LENS OR AN EXCESSIVELY LOOSE LENS

Front 40

FLAT CORNEA

Back 40

A CORNEA W/ VALUE LESS THAN 41.00D

Front 41

FLUID LENS

Back 41

POWER CREATED BY HAVING A CONVEX OR CONCAVE REAR FILM

Front 42

FLUORESCEIN

Back 42

AN ORGANIC COMPOUND THAT IS INERT AND USED TO STAIN THE TEAR FILM FOR CONTACT

LENS FITTING AND TO ASSESS THE INTEGRITY OF THE CORNEA

Front 43

FUCH'S DYSTROPHY

Back 43

EDEMA IN THE STROMA ASSOCIATED W/ SCARRING ON BOTH THE ENDOTHELIUM AND EPITHELIUM

Front 44

GHOST VESSELS

Back 44

EMPTY VESSELS REMAINING AFTER CORNEAL INVASION BY BLOOD VESSELS

Front 45

GIANT PAPILLARY CONJUNCTIVITIS

( GPC )

Back 45

LARGE ELEVATED PAPULES IN THE TARSAL CONJUNCTIVA.

USUALLY ASSOCIATED W/ SOFT LENS WEAR

Front 46

HAPTIC

Back 46

THE PART OF A CONTACT OR INTRAOCULAR LENS THAT SUPPORTS THE OPTIC PORTION AND TOUCHES THE PERIPHERAL OR NON OPTIC PORTION OF THE CORNEA:

" FASTENING, CONTACT, SENSE OF TOUCH "

Front 47

HYDROGEN PEROXIDE

Back 47

A BACTERICIDE USED FOR SOFT LENSES

Front 48

HYPOXIA

Back 48

LOW IN OXYGEN

Front 49

KERATITIS

Back 49

INFLAMMATION OF THE CORNEA

Front 50

KERATITIS SICCA

Back 50

DRYNESS OF THE CORNEA

Front 51

KERATOCONJUNCTIVITIS SICCA

Back 51

DRYING OF THE CORNEA AND CONJUNCTIVA

Front 52

KERATOCONUS

Back 52

A NON INFLAMMATORY CORNEAL DYSTROPHY IN WHICH THE CORNEA BECOMES CURVED OR CONICAL IN SHAPE

Front 53

Keratoplasty

Back 53

A CORNEAL TRANSPLANT

Front 54

LD+2

Back 54

THE LONGEST DIAMETER ( LD ) OF THE OPTIC ZONE PLUS 2MM ( FOR INTERNEDIATE AND PERIPHERAL CURVE ) YIELDS THE DIAMETER OF A LENS; DETERMINED BY USE OF THE TOPOGOMETER

Front 55

LENTICULAR LENS

Back 55

RELATIVELY LARGE LENS MOST SUITABLE FOR LARGE, FLAT EYES; CONSISTS OF A CENTRAL OPTIC ZONE AND A SURROUNDING NONOPTIC FLANGE

Front 56

LIMBAL ZONE

Back 56

JUNCTION BTW. THE PERIPHERY OF THE CORNEA WITH THE SCLERA

Front 57

LOOSE LENS

Back 57

A CONTACT LENS WITH EXCESSIVE MOVEMENT;

IT CAN BE CAUSED BY :

* LENS THAT IS TOO SMALL

* LENS THAT IS TOO THICK

* LENS THAT IS TOO FLAT

Front 58

MEIBOMIAN GLANDS

Back 58

SEBACEOUS ( FAT/OIL) GLANDS OF THE EYELID

Front 59

MICROTHIN LENS

Back 59

A LENS LESS THAN .10 MM IN THICKNESS

Front 60

MINUS CARRIER

Back 60

A LENS DESIGNED WITH AN EDGE CONFIGURATION SIMILAR TO THAT OF A MINUS LENS THAT IS THICKER AT ITS PERIPHERY; OFTEN USED HIGH PLUS LENSES SUCH AS APHAKIC LENS

Front 61

MONOVISION

Back 61

SINGLE VISION CONTACT LENS USED FOR PRESBYOPES FOR WHOM THE POWER OF THE LENSES IS SUCH THAT ONE EYE IS USED FOR DISTANCE VISION AND THE OTHER IS USED FOR NEAR VISION

Front 62

MYDRIATIC AGENT

Back 62

A DRUG THAT CAUSE THE PUPIL TO CONTRACT

Front 63

NEBULA

Back 63

A FAINT OR SLIGHTLY MIST CORNEAL OPACITY

Front 64

NEOVASCULARIZATION

Back 64

ABNORMAL GROWTH OF NEW BLOOD VESSELS IN THE CORNEA

Front 65

NOMOGRAM

Back 65

A TABLE OF PRECALCULATED MATHEMATICAL VALUES USED TO ARRIVE AT THE SPECIFICATIONS

Front 66

NYSTAGMUS

Back 66

AN INVOLUNTARY OSCILLATING, RAPID MOVEMENT OF THE EYEBALL. IT MAY BE LATERAL, VERTICAL, ROTARY OR MIXED

Front 67

ORTHOKERATOLOGY

Back 67

THE TECHNIQUE OF FLATTEN THE CORNEA AND THUS CORRECTING REFRACTIVE ERRORS BY THE USE OF A SERIES OF PROGRESSIVELY FLATTER CONTACT LENSES

Front 68

OVERWEARING SYNDROME

Back 68

A MISNOMER FOR ACUTE CORNEAL HYPOXIA CHARACTERIZE BY A LATENT INTERVAL AFTER REMOVAL OF THE LENS; EXTREME PAIN AND CONGESTIONS OF LIDS, CORNEA, AND CONJUNCTIVA ARE EXPERIENCED.

Front 69

OXYGEN FLUX

Back 69

A MEASURE OF THE AMOUNT OF OXYGEN THAT WILL PASS THROUGH A GIVEN AREA OF MATERIAL IN A GIVEN UNIT OF TIME

Front 70

OXYGEN PERMEABILITY

Back 70

THE DEGREE TO WHICH A LENS PERMITS THE PASSAGE OF OXYGEN ACROSS IT. IT DEPENDS ON THE COMPOSITION OF THE PLASTIC ( THAT IS, SILICONE HAS EXCELLENT PERMEABILITY, WHEREAS PMMA HAS NO PERMEABILITY), THE THICKNESS OF THE LENS, AND ITS WATER CONTENT.

Dk VALUE

Front 71

PACHOMETER

Back 71

AN INSTRUMENT USED TO MEASURE THE THICKNESS OF THE CORNEA AND DEPTH OF THE ANTERIOR CHAMBER

Front 72

PANNUS

Back 72

INVASION OF THE PERIPHERAL CORNEA BY INFILTRATION AND FORMATION OF THE NEW BLOOD VESSELS.

Front 73

PHOTOKERATOSCOPE

Back 73

AN INSTRUMENT DESIGNED TO PHOTOGRAPH ANNULAR RINGS OF THE CORNEA AND TO AID MAKING A CONTACT LENS THAT WILL CONTOUR TO THE CORNEA

Front 74

PINGUECULA

Back 74

YELLOWISH, TRIANGULAR THICKENING OF BULBAR CONJUNCTIVA, NASAL OR TEMPORAL TO THE CORNEA

Front 75

PLACIDO'S DISC

Back 75

A DISK W/ CONCENTRIC RINGS DETERMINE THE REGULARITY OF THE CORNEA WHEN ITS REFLECTION IS REVEALED ON THE CORNEAL SURFACE

Front 76

POLYMER

Back 76

A CHAIN OF LINKED MOLECULAR UNITY OF DIMENSION GREATER THAN 5 MONOMER UNITY

Front 77

POLYMERIZATION

Back 77

THE UNION OF MOLECULES OF A COMPOUND TO FORM LARGER MOLECULES AND A NEW COMPOUND

Front 78

POLYVINYL ALCOHOL

Back 78

A WETTING AGENT

Front 79

PRISM BALLAST LENS

Back 79

CONTACT LENS WITH A BAS-DOWN PRISM ADDED INFERIORLY TO IMPROVE THE STABILITY OF THE LENS. USUALLY 1 TO 1.50 D

Front 80

PTERYGIUM

Back 80

A TRIANGLE FOLD OF GROWING MEMBRANE THAT MAY EXTEND OVER THE CORNEA FROM THE WHITE OF THE EYE. IT OCCURS MOST FREQUENTLY IN PERSONS EXPOSED TO DUST, SUN OR WIND

Front 81

PTOSIS

Back 81

A DROOPING OF THE UPPER EYELID

Front 82

RADIAL KERATOTOMY

Back 82

A SURGICAL PROCEDURE IN WHICH CLOCK LIKE INCISIONS ARE MADE INTO THE CORNEA TO FLATTEN THE CORNEA AND CORRECT MYOPIC REFRACTIVE ERRORS

Front 83

RESIDUAL ASTIGMATISM

Back 83

THE ASTIGMATISM PRESENT AFTER THE CORNEAL ASTIGMATISM HAS BEEN NULLIFIED BY A CONTACT LENS

Front 84

RETROILLUMINATION

Back 84

LIGHT IS FOCUSED ON DEEPER STRUCTURES SUCH AS THE IRIS, WHILE THE MICROSCOPE IS ADJUSTED TO STUDY TO STUDY THE CORNEA

Front 85

SCHIRMER TEST

Back 85

MEASURES NORMAL TEAR SECRETION; THE ABILITY OF THE EYE TO WET IN 5 MINUTES 15 MM OF 5 X 35 MM STRIP OF FILTER PAPER

Front 86

SEMIFINISHED BLANK

Back 86

A CONTACT LENS BLANKS IN WHICH THE POSTERIOR CURVE OF THE CONTACT LENS HAS BEEN FABRICATED

Front 87

SOAKING SOLUTION

Back 87

A SOLUTION DESIGNED TO KEEP A LENS MOIST AND FREE FROM CONTAMINATION

Front 88

SOPER LENS

Back 88

A RIGID LENS DESIGNED BY JOSEPH SOPER W/ A STEEP CENTRAL POSTERIOR CURVE TO ACCOMMODATE LARGE CONES OF KERATOCONUS

Front 89

SPECTACLE BLURR

Back 89

BLURRED VISION THAT LAST FOR 30 MIN OR LONGER AFTER A RIGID LENS IS REMOVED AND SPECTACLES ARE EMPLOYED

Front 90

SPHERIC EQUIVALENT

Back 90

IT IS THE SPHERIC POWER OF THE LENS PLUS HALF THE THE CYLINDER POWER

Front 91

STERILIZATION

Back 91

A METHOD TO ENSURE THE COMPLETE DEATH OF

Front 92

Strippling

Back 92

DOTLIKE STAINING OF THE CORNEA

Front 93

SUPERFICIAL PUNCTATE KERATITIS

PSK

Back 93

DIFFUSE STIPPLING Of THE CORNEA

Front 94

SURFACTANT

Back 94

A CLEANSER THAT ACTS ON THE SURFACE OF A CONTACT LENS

Front 95

Abrasion

Back 95

Rubbing off of the superficial layer

Front 96

Aniscoria

Back 96

Inequality in the pupils in diameter

Front 97

Anophthalmia

Back 97

Absence of a true eyeball

Front 98

Antibody

Back 98

A specific substance produced by the body in the presence of an antigen

Front 99

Antigen

Back 99

Any substance that acts against the action of histamine

Front 100

Asthenopia

Back 100

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

Front 101

Against the Rule Astigmatism

Back 101

Steepest corneal meridian is in the horizontal plane

* K's 45.00 @180/ 42.00 @90

Front 102

Irregular astigmatism

Back 102

Irregular shaped cornea

* non correctable

* corneal scarring

* keratoconus

Front 103

Lenticular Astigmatism

Back 103

Astigmatism found in the crystalline lens

Front 104

Oblique astigmatism

Back 104

Regular astigmatism in whichnthe principal meridian are other than 90 and 180

Front 105

Residual Astigmatism

Back 105

Astigmatism remaining after the corneal astigmatism has been neutralized

Front 106

With the rule astigmatism

Back 106

Steepest corneal meridian is in the vertical plane

K's 42.00 @180 / 45.00 @90

Front 107

Atrophy

Back 107

Wasting or decrease ofna tissue due to faultu nutrition or loss of nerve supply

Front 108

Bedewing ( cornea )

Back 108

An edematous condition of the epithelium of the cornea characteristics

* irregular reflection from a multitude of droplets when the cornea is viewed with slit

Front 109

Blepharitis

Back 109

Inflammation of the margins of the eyelid

Front 110

Blepharoconjunctivitis

Back 110

Inflammation of the eyelid and conjunctiva

Front 111

Blepharoplasty

Back 111

Plastic surgery on eyelid

Front 112

Blepharoptisis

Back 112

Dropping of upper eyelid

Front 113

Blepharospasm

Back 113

Excessive winging, tonic or clonic spasm of the orbicularis oculi muscle

Front 114

Blindness

Back 114

In the US ... 20/ 200 or less after correction

* or/ and widest field subtends an angle distance no greater than 20 ° ( some states is 30°)

Front 115

Buphthalmos

Back 115

Enlarged eyeball, resulting from congenital ( infantile ) glaucoma

Front 116

CC - CUM CORRECTION

Back 116

with correction

Front 117

Canaliculus

Back 117

Passageway for drainageof tears from eyes to tear sac

Front 118

Chemosis

Back 118

Severe edema of the conjunctiva

Front 119

Chorioretinitis

Back 119

Inflammation of the choroid and retina

Front 120

Choroidtitis

Back 120

Inflammation of the choroid

Front 121

Coloboma

Back 121

Congenital cleft due to the failure of the eye to complete growth in the part afected

Front 122

Cone and Rods

Back 122

Cones = color and visual acuity

Rods= night vision and motion