Corneal Degenerations Flashcards
Patient works outside alot. On SLE you find irregular protein deposits in the anterior stroma replacing Bowman’s Layer. This finding is bilateral. What is it?
Spheroidal degeneration
Presentation: Golden brown, oily droplets under the epithelium of conj. Found at 3 and 9 oclock.
Spheroidal degeneration
Pt presents with a corneal opacity typically located where a metallic foreign body was. The deposit contains iron. What is it? How do you treat it?
Coat’s White Ring
No tx indicated, but use algae brush in attempt to clear it up one time
Presentation: Small, granular, white oval ring
Coat’s white ring
Pt presents with a bluish-white nodule in a circular fashion around midperipheral cornea. These deposits are surrounded by iron from the tears. What is it?
Salzmann’s degeneration
What is the etiology of Salzmann’s degeneration?
- Related to chronic inflammation
- From virus, old phlyctenule or trachoma
Pt presents w/ calcium salt deposits in the interpalpebral fissue area of bowman’s membrane, found at 3-9pm. Looks like a swiss cheese appearance. WIT?
Band keratopathy
What is the etiology of band keratopathy?
- ocular inflammation
- hypercalcemia
Band keratopathy is more common in what ocular issue?
- Phthisis bulbi
How do you treat band keratopathy?
Scrape calcium from epithelium
Pt presents with dense yellow-white opacities in the cornea, found near areas of neo. Pt just had HSV/HZV a few weeks ago.. WIT?
Lipid degeneration
What is the etiology of lipid degeneration?
Can be primary or secondary due to trauma or corneal disease
40 yo male pt presents with yellow-white punctate stromal oppacities which start superior and spread. You notice marginal thinning w/ a peripheral gutter. You though t it was arcus, but he’s too young. WIT?
Terrien’s Marginal Degeneration
What is the etiology of Terrien’s Marginal degeneration?
Idiopathic
Rare
Bilateral
What’s our biggest concern in terrien’s marginal degeneration?
Corneal perforation
What type of astigmatism is found in Terrien’s Marginal Degeneration?
ATR astigmatism
Pt presents with severe pain, photophobia and blur due to increased astigmatism. On SLE you find a marginal stromal ulceration affecting 1/3 of cornea, looks infiltrated. WIT?
Mooren’s Ulcer
In a mooren’s ulcer, who gets it bilaterally and unilaterally? which is worse?
Old = unilateral Young = bilateral, worse
Elderly pt presents with thined cornea in the area of arcus. No perforation or neo. WIT?
Furrow degeneration
What systemic diseases is Furrow degeneration associated with?
RA
SLE
Polyarteritis Nodosa
Pt presents with bilateral white, irregular chalky flecks in the nasal and temporal cornea and medial limbal areas of Bowman’s. No neo was found and vision is unaffected. WIT?
Limbal Girdle of Vogt
Limble girdle of Vogt is found in what age group?
Any age, but more common over 45
Pt presents with bilateral polygonal, grayish-white stromal opacities separated by clear tissue. SLE reveals it’s located in the epithelium, bowmans, and anterior 2/3 or stroma. VA not affected.
Anterior Crocodile Shagreen
What layers is posterior crocodile shagreen found?
Deep stroma an descemet’s layer
Pt presents w/ bilateral flour dust appearance of deep stroma. You think it might be PEE/PEK. SLE shows small grey-white dots deep in the stroma or predescemet’s zone. WIT?
Cornea Farinata
Pt presents with yellowish brown horizontal line of pigment between lower pupil margin and inferior limbus. WIT?
Hudson Stahli Line
Pt presents with localized thinning in areas of cornea due to tear film instability and dryness. WIT?
Dellen
What is the etiology of Dellen?
Thinning of the cornea or sclera due to water loss from corneal stroma or sclera.
