1
Q
clinical definition for astigmatism
A
difference inpower between 2 principal meridians
2
Q
optics definition for astigmatism
A
variation in focusing distance with meridians
3
Q
toric surfaces
A
different curvatures /powers along 2 perpendicular meridians
4
Q
cylindrical lenses
A
plano in one meridina
axis marking = along plano direction
labelled power effective perpendicularly to cyl axis
optics
flashcards
Decks in class (11)
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