Types Flashcards
(4 cards)
1
Q
What are hard contact lenses?
A
Durable, gas permeable material that allows oxygen to reach the cornea. Used to correct astigmatism, slow nearsightedness development, irregular cornea, high astigmatism, and dry eyes
1
Q
What are soft contact lenses?
A
Flexible discs made of plastic that fits over the cornea they can correct a variety of vision problems
2
Q
What is PMMA?
A
Plexiglas/acrylic used in hard contacts, IOLs, prosthetic eyes. It is impermeable to oxygen
3
Q
What is a Toric lens?
A
IOL designed to correct astigmatism
