Flashcards in Lec 7 Deck (80)
Illumination technique for Transillumination Defect
Best ilumination technique for guttata
Best illumination technique for sub-epi infiltrate
Unilateral proliferation of melanocytes following CN V branches 1&2 describes
Nevus of Ota
Melanocytes of the nevus of ota follow what nerve?
CN V1 and V2
Describe: Cogan's senile plaque (aka Senile Hyaline Plaque)
benign in elderly (pt >60yo), bilat, N&T, no clinical signif
What causes senile plaque of sclera
constant stress & strain on scleral fibers by horiz rectus muscles
(so they're found N&T)
redundant, loose, non-edematous conj that creates conj folds that go over the lid margin
Typically involves InfraTemp conj
What does a pinguecula typically look like
N&T (interpalpebral), yellow-white bulba conj thickening adjacent to limbus
What stimulates a pterygium
UV exposure and/oor climate
thick, fleshy trianglar tissue mass onto NASAL cornea, usu bilateral
What is: brown discoloration of conj
What are typical ab-normal findings of the palpebral conj
retention cysts, concretions, papillae, follices
Describe: retention cyst
inferior palpebral conj, thin-walled with clear fluid, in gland of Krause
Etiology of concretions
idiopathic or result of chronic inflamm
small, yellow-white, hard on palpebral conj
When do concretions become symptomatic?
larger, numerous, calcific
What is the key feature of papillae?
single vessel growth in the middle
What is papillae assoc with?
allergic rxn, bac infxn
Where are papillae best seen?
Where can papillae be found in chronic allergic conj-its?
Where would follicle presentation be abnormal?
inf or sup palpebral conj in adults or children
Follicles are most common with what type of infection?
Viral (or drug toxicity to topical Rx)
When would follicle presentation be normal?
in children with lower cul-de-sac, quiet eyes
pale mounts of infiltrative cellular (lymphoid) with varying diameter, typically small but can be 5x larger than papillae (with trachoma from Chlamydia); avascular center
What layer of cornea is damaged in SPK?
epithelium (damage and breakdown) -- think: SPK is aka Punctate Epithelial Erosions
What are the potential etiologies for SPK?
dry eye, CL, drug toxicity, trauma, blepharitis, conj-itis
Parallelpiped is most effective at detecting which tissue lesions?
scars, abrasions, SPK, SEI, corneal guttae, corneal striae
What is direct illumination a poor choice to detect SEI?
direct's bright lght may "wash out" the SEI