Degenerative Changes Of The Cornea

Front 1

Lines that represent areas of tear pooling with deposition of iron from the tears in the basal epi.

Back 1

Iron Lines

Front 2

Normal iron line in the horiz. lower third of the cornea where lid closure occurs

Back 2

Hudson-stahli

Front 3

Iron line seen at the base of keratoconus

Back 3

Fleischer ring

Front 4

Iron line seen central to a pterygium

Back 4

Stocker's

Front 5

Iron line seen at the leading edge of a filtering bleb

Back 5

Ferry's

Front 6

Found central to radial keratotomy incisions

Back 6

Iron Line

Front 7

Deposits first in Descemet's then Bowman's and then intervening stroma.

Back 7

Corneal Arcus

Front 8

Degenerative accumulation of pre-Descemet's fine particles that resemble cream of wheat.

Back 8

Cornea Farinata

Front 9

Descemet's stria is related to corneal hypoxia due to:

Back 9

(1) age
(2) keratoconus
(3) diabetes mellitus

Front 10

Fibrovascular membrane triangular in shape and has a grayish central avascular edge.

Back 10

pterygium

Front 11

Appearance of spherical, golden-brown subepi. material most common to those exposed to UV and trauma.

Back 11

Spheroid Degeneration

Front 12

Punctate and linear transparent deposits at the depth of the stroma in patients 40 to 60 years old.

Back 12

amyloid degeneration

Front 13

Whitish, sub-epithelial nodular opacities that may occur in any area of the cornea, usually at or adjacent to previous conreal conditions as trachoma or phlyctenulosis.

Back 13

Salzmann's Degeneration

Front 14

Originates near the limbus in the nasal and temporal interpalpebral zone and moves centrally. Small holes in Bowman's layer (nerves pass through) give appearance of Swiss cheese.

Back 14

Band Keratopathy

Front 15

Deposition of calcium salts and calcification of Bowman's layer can occur as a result of local inflammation, topical ophthalmic medications and systemic disorders that cause hypercalcemia.

Back 15

Band Keratopathy

Front 16

Where a metallic corneal foreign body has been located, a subepi. or anterior stromal circular white ring with a granular appearance is observed.

Back 16

Coat's White Ring

Front 17

Non-inflammatory superior peripheral corneal thinning with tan or yellow-white area of opacification involving the corneal epi. with superficial vascularization. Common in 50 older but can be seen in teen years and 20's & 30's.

Back 17

Terrien marginal degeneration

Front 18

Thinning may spread circumferentially or central or both and cause significant astigmatism. Treatment to reduce astigmatism.

Back 18

Terrien marginal degeneration

Front 19

Marginal thinning seen in the anterior peripheral cornea. Occurs superiorly or inferiorly between the arcus and limbus. Age related. NO inflammation or vascularization.

Back 19

Age-Related Marginal Degeneration

Front 20

Inferior peripheral corneal thinning and usually persists as decreased vision assoc. with ATR. Resemble unusual form keratoconus. Spectacles or CL correction NOT helpful.

Back 20

Pellucid Marginal Degeneration

Front 21

Recurrent ocular inflammation usually at inferior limbus and is associated with superficial corneal inflammation.

Back 21

Fuch's Superficial Marginal Keratitis

Front 22

Inflammation adjacent to area of pseudopterygium formation overlying corneal thinning. NO lipid deposition. Treat with corticosteroids.

Back 22

Fuch's Superficial Marginal Keratitis

Front 23

Lipid deposition can occur in a cornea with ____________.

Back 23

Stromal vascularization

Front 24

Impediments to epithelial healing.

Back 24

(1) Damage or disruption of Bowman's
(2) Damage to superficial stroma
(3) inflammation
(4) EBMD

Front 25

Non-traumatic cause impeding epithelial healing.

Back 25

(1) EBMD
(2) superficial stromal dystrophies
(3) corneal edema
(4) herpetic infections
(5) diabetes
(6) epidermolysis bullosa
(7) Cockayne syndrome

Front 26

Loss of sensory corneal innervation by the nasociliary branch of the ophthalmic nerve (V).

Back 26

Neuroparalytic keratitis

Front 27

Neuroparalytic keratitis results in:

Back 27

(1)corneal haze
(2)conjunctival hyperemia
(3)epithelial defects
(4)anterior segment inflammation
(5) corneal melting
(6) vascularization
(7) perforation

Front 28

OCcurs due to forceps delivery of prolonged labor. Single or multiple usually vertical oriented breaks in Descemet's membrane.

Back 28

Rupture of Descemet's membrane.