CL MATERIALS Flashcards
CL Material: the acid used to improve the natural hydrophobic properties of silicon
a. Citric Acid
b. Hydrochloric Acid
c. Methacrylic acid
d. Carbonic Acid
c. Methacrylic acid
History of Soft CL: The Aoflex soft lens was developed by
a. Harry Green
b. Otto Wichterle
c. Pierre Rocher
d. Allen Isen
c. Pierre Rocher
CL Material: the kind of agents that improves the natural hydrophobic properties of silicon
a. Wetting agents
b. Disinfecting agents
c. Sterilizing agents
d. Cross-linking agents
a. Wetting agents
This type of CL are characterized by the ability to absorb water, elasticity and flexibility a. Rigid non-gas permeable CL b. Rigid gas-permeable CL c. Soft Contact Lens
c. Soft Contact Lens
This type of CL are characterized by the ability to absorb water, elasticity and flexibility
a. Rigid non-gas permeable CL
b. Rigid gas-permeable CL
c. Soft Contact Lens
c. Soft Contact Lens
History of Soft CL: It was the first soft CL to be FDA-approved in the US
a. Bionite
b. Soflens
c. Permalens
d. CSI
b. Soflens
These lenses cost more than conventional CL and are somewhat less durable
a. Rigid non-gas permeable CL
b. Rigid gas-permeable CL
c. Soft Contact Lens
a. Rigid gas permeable CL
A type of CL where the material is a derivative of Acrylic acid–also called acrylic
a. Rigid non-gas permeable CL
b. Rigid gas-permeable CL
c. Soft Contact Lens
a. Rigid non-gas permeable CL
They are designed for extended wear (overnight), although many eye specialists advise against wearing them for an extended period of time or while sleeping
a. Rigid non-gas permeable CL
b. Rigid gas-permeable CL
c. Soft Contact Lens
a. Rigid gas permeable CL
It is manufactured from plastic or thermoplastic material
a. Rigid non-gas permeable CL
b. Rigid gas-permeable CL
c. Soft Contact Lens
a. Rigid non-gas permeable CL
CL Material: What makes an RGP lens flexibile like a soft lens?
a. High Flourine
b. High Silicone
c. High Acrylate
d. High Styrene
a. High Flourine
CL Material: This is seen on SA lenses more than FSA lenses
a. Surface tension
b. Surface clarity
c. Surface haze
d. None of the above
c. Surface haze
History of Soft CL: He’s a material chemist, who develop hydrogel CL materials
a. Harry Green
b. Otto Wichterle
c. Drahoslav Lim
d. Allen Isen
b. Otto Wichterle
This type of CL are made of soft, flexible plastics that allow oxygen to pass through to the cornea.
a. Rigid non-gas permeable CL
b. Rigid gas-permeable CL
c. Soft Contact Lens
c. Soft Contact Lens
These lenses retain their shape when you blink, which tends to provide sharper vision than pliable soft lenses.
a. Rigid non-gas permeable CL
b. Rigid gas-permeable CL
c. Soft Contact Lens
b. Rigid gas-permeable CL
History of Soft CL:He was the first to develop a non-glass phial/serum bottle for SCL storage
a. Harry Green
b. Otto Wichterle
c. Drahoslav Lim
d. Allen Isen
a. Harry Green
History of Soft CL: The ‘Bionite’ soft lens was developed by
a. Harry Green
b. Otto Wichterle
c. Drahoslav Lim
d. Allen Isen
d. Allen Isen
History of Soft CL: He experimented with soft lenses, working together with
a. Harry Green
b. Otto Wichterle
c. Drahoslav Lim
d. Allen Isen
b. Otto Wichterle
This type of CL is made of material with a molecular structure that permits the passage of oxygen but contain no water
a. Rigid non-gas permeable CL
b. Rigid gas-permeable CL
c. Soft Contact Lens
a. Rigid gas permeable CL
People who wear this type of CL are at risk of over wearing syndrome and other problems.
a. Rigid non-gas permeable CL
b. Rigid gas-permeable CL
c. Soft Contact Lens
a. Rigid non-gas permeable CL
This type of CL are very thin and pliable and conform to the front surface of the eye.
a. Rigid non-gas permeable CL
b. Rigid gas-permeable CL
c. Soft Contact Lens
c. Soft Contact Lens
This type of CL were introduced in the early 1970s and were much more popular because they typically are immediately comfortable.
a. Rigid non-gas permeable CL
b. Rigid gas-permeable CL
c. Soft Contact Lens
c. Soft Contact Lens
These lenses reduce the amount of oxygen that reaches the cornea
a. Rigid non-gas permeable CL
b. Rigid gas-permeable CL
c. Soft Contact Lens
a. Rigid non-gas permeable CL
History of Soft CL: It was the first soft CL to be FDA-approved in the US was made by
a. Bausch & Lomb
b. Cooper
c. CIBA
d. Syntex
a. Bausch & Lomb
CL Material: It gives rigidity to the GP lens
a. Acrylate
b. Fluorine
c. Silicone
d. Styrene
a. Acrylate
History of Soft CL: The first extended wear lens was
a. Bionite
b. Geltak
c. Permalens
d. Spofa
c. Permalens
History of Soft CL: They produced the first non-HEMA material soft lens
a. Bausch & Lomb
b. Cooper
c. CIBA
d. Syntex
d. Syntex
History of Soft CL: The first non-HEMA material soft lens is called
a. Permalens
b. Bionite
c. CSI
d. Spofa
d. Spofa
CL Material: the kind of agents that are included to improve the strength of the material
a. Wetting agents
b. Disinfecting agents
c. Sterilizing agents
d. Cross-linking agents
d. Cross-linking agents
History of Soft CL: He produced the first wearable soft lens B He developed a coloured lens
a. Harry Green
b. Otto Wichterle
c. Drahoslav Lim
d. Allen Isen
b. Otto Wichterle
