Lens Flashcards
1
Q
Brown-McClean Syndrome
A
Years after ICCE (less often ECCE/phaco), circumferential peripheral K edema starting inf. central K stays clear but may have guttae
2
Q
A-P diameter of lens a) at birth and b) in adulthood
A
a) 3.5 mm; b) 5 mm
3
Q
Tetanic cataract
A
Idiopathic or 2/2 hypoparathyroidism
Punctuate iridescent opacities in ant/post cortex separated by clear space (looks similar to xmas tree)
4
Q
DDX retained lens nuclei
A
Rubella, Lowe’s, trisomy 13 & 21, Leigh syndrome
5
Q
Lens proteins
A
Alpha: largest; 35% by wt
Beta: 55% by wt
Gamma: smallest
MIP: not water soluble, a/w brunescence
6
Q
Microspherphakia associations
A
Weill-marcessani
Rubella
Alports
7
Q
IOL characteristics associated with dysphotopsias
A
High index, square edge, acrylic, less steep curvature of anterior surface
