3 ( RENAME PLEASE) Flashcards
adherence of a liquid to the surface of a solid
wettability
dK
what is d?
diffusion
dK
what is K?
solubility
property of polymeric material to transmit oxygen
Oxygen Permeability***
the higher the Dk, the more permeable the material. (T/F)
True
denoted by Dk/t or Dk/L
(t or L is the thickness)
- oxygen transmissibility
- oxygen Permeability
oxygen transmissibility
thicker: the oxygen transmissibility is
- reduced
- increase
reduced
thinner: transmissibility is
- reduced
- increase
increase
freely gas permeable
- gas permeability
- tolerance
- moulding
- gas permeability
gas permeability and design
- gas permeability
- tolerance
- moulding
- tolerance
easy shaping and manufacture
- gas permeability
- tolerance
- moulding
- moulding
resistant to contamination or easily sterilizable
- sterility
- stability
- sterility
resistant to all dimensions
- sterility
- stability
- surface chemistry
- stability
easily wettable
- sterility
- stability
- surface chemistry
- surface chemistry
also known as conventional hard contact lens
more notes please
rigid non-gas permeable contact lens
derivative acrylic …. (correct this)
…
what is PMMA
Polymethyl methacrylate
pure PMMA
- toxic
- non-toxic
(more notes please)
- non-toxic
meaning of RGP
rigid gas permeable
who is more comfortable
- RGP CL
- Conventional Hard lens
RGP CL
what is CAB?
cellulose acetate butyrate
