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cornea quiz Flashcards | StudBud
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cornea quiz
cornea quiz
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Answers
1
Ocular cicatricial pemphigoid typically presents with:
Retinal vasculitis
Progressive conjunctival scarring
Corneal melting
Vitreous hemorrhage
2
Fortified vancomycin and tobramycin are commonly used together to treat severe or sight-threatening bacterial ulcers
True
False
3
Which layer of the cornea is primarily responsible for maintaining corneal dehydration and transparency?
Epithelium
Endothelium
Stroma
Bowman’s layer
4
Kayser-Fleischer rings are indicative of what systemic disorder?
Sarcoidosis
Hemochromatosis
Wilson disease
Rheumatoid arthritis
5
Which of the following medications is most likely responsible for those findings?
Amiodarone
Isoretinoin
Alendronic acid
Ciprofloxacin
6
What is normal tear film pH...
5.9-6.4
8.0-8.7
7.3-7.7
6.5-7.1
7
Choose correct answer
Macular dystrophy
Thiel-Behnke Dystrophy
Granular dystrophy
Reis-Bücklers’ Dystrophy
8
Terrien marginal degeneration is bilateral, inflammatory thinning disorder of the peripheral cornea with vascularization
True
False
9
Fuchs endothelial corneal dystrophy initially presents with guttae and may later lead to bullous keratopathy.
False
True
10
A rejection line (Khodadoust line) is most commonly seen after deep anterior lamellar keratoplasty (DALK)
True
False
11
Which topical agent is effective in ocular cicatricial pemphigoid?
Antiviral drops
Immunomodulators like cyclosporine or tacrolimus
Fluoroquinolones
Prostaglandin analogs
12
A 55y/o presents with blurry near vision and headaches after attempts to read. Which interventions most appropriate?
Observation with increased power of reading glasses
Diamond burr polishing of Bowman membrane
Anterior stromal puncture
Antibiotic ointment and cycloplegic drops
13
47 y/o patient presents1-year history of painless decrease in vision in the RE. PK 10 years ago in the RE
Lipid keratopathy
Fungal keratitis
Schnyder corneal dystrophy
Salzman's nodular dystrophy
14
What is a defining feature of Peters anomaly?
Megalocornea
Microphthalmia
Blue sclera
Central corneal opacity with iridocorneal adhesions
15
Which of the following is true regarding limbal stem cell deficiency (LSCD)?
It only occurs in congenital conditions
chemical injuries and Stevens-Johnson syndrome
It causes improved epithelial healing
It presents with a clear corneal surface
16
Trantas' dots consist of which of the following
Mast cells, basophils
Fibroblast and lymphocytes
Chemokines, adhesion molecules, growth factor
Clumps of necrotic eosinophils, neutrophils, epithelial cells
17
Topical steroids are indicated in HSV epithelial keratitis to reduce scarring
False
True
18
Which of the following is not a component of the ocular surface's defense mechanism?
Lysozyme in tears
Mechanical sweeping by the lids
Lactoferrin in tears
Conjunctival goblet cells producing mucus
19
What is a major risk factor for graft rejection in corneal transplantation?
Pre-existing ocular inflammation
Use of topical steroids
Thin cornea
Young donor age
