Unit 2 -Corneal degenerations, part 3 Flashcards
What is the appearance of Vogt limbal girdle?
white crescent band of chalk at 3 and 9 o’clock
Vogt limbal girdle is more common in men or women?
Women
What is the difference between type 1 and 2 limbal girdle?
Type 1: form of band keratopathy, swiss cheese pattern
Type 2: more prevalent (absence of holes), juxtalimbal clear zone
Is the vision affected in corneal farinata?
No
What are the symptoms in corneal farinata?
None
What are the symptoms in crocodile shagreen?
asymptomatic, in deeper layers of cornea.
What two types of lipid keratopathy are there?
Primary and secondary
What is the cause of primary lipid keratopathy?
Idiopathic
What is the cause of secondary lipid keratopathy?
Associated with previous ocular injury or disease that has results in corneal neovasc.
What are the most commons causes of secondary lipid keratopathy?
herpex simplex and herpex zoster
What are the ocular causes of band keratopathy?
Anterior seg inflammation
Phthisis
What are the systemic associates with band keratopathy?
Hypercalcaemia, hyperphosphataemia, hyperuricaemia, chronic renal failure
What are the symptoms of band keratopathy?
FB sensation
What are Salzmann nodules made of?
Hyaline tissue
Where are Salzmann nodules located?
Anterior to the Bowman layer
