Cornea Flashcards
phlyctenulosis
occurs as a result of a type 4 hypersensitivity reaction, usually from staphylococcal infection secondary to blepharitis
Fabry’s disease
a lysosomal storage disease that can result in cornea verticillata “whorl keratopathy” and spoke-like lens opacities
Thygeson’s SPK
uncommon, epithelial keratopathy of unknown cause, usually bilateral, coarse PEK, may have mild injection, no known associated conditions, but may have long history of exacerbated FBS, other symptoms of photophobia, burning, tearing, blur, etc. Tx with ATs
subepithelial infiltrates
tiny, focal inflammatory infiltrates, appear below epithelium and do not stain. Assoc w viral/inflammatory conditions often (adenoviral, zoster, adult inclusion, marginal keratitis, ocular rosacea, etc.) tx w/steroid
Hudson-stahli line
iron deposition in cornea at interpalpebral junction, where eyelids meet upon blinking, more common in elderly patients
Ferry’s line
iron deposition in the cornea at the edge of a filtering bleb, usually superior cornea
Stocker’s line
iron deposition in the cornea at leading edge of a pterygium, 3 or 9 o’clock
Fleischer ring
iron deposition in the cornea found at the base of a cone in keratoconus, not always a full ring
Coat’s white ring
develops in the cornea when a rust ring from a metallic foreign body is not entirely removed
Kayser-Fleischer ring
deep stromal copper deposition, bilateral, yellow-brown or green ring at the level of Descemet in the peripheral cornea, starting at Schwalbe’s line and progressing centrally. Assoc w Wilsons disease
Vortex Keratopathy “Cornea Verticillata”
linear opacities located within corneal epithelium that assume a whorl-like pattern, swirling outward and sparing limbus. Assoc w Fabry’s disease or side effect of meds: Amiodarone, Chloroquines, Chlorpromazine, and Indomethacin
