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CONTACT LENS (RNH) > CL MATERIALS > Flashcards

CL MATERIALS Flashcards

1
Q

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

A

c. Methacrylic acid

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2
Q

History of Soft CL: The Aoflex soft lens was developed by

a. Harry Green
b. Otto Wichterle
c. Pierre Rocher
d. Allen Isen

A

c. Pierre Rocher

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3
Q

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

a. Wetting agents

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4
Q 
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
A

c. Soft Contact Lens

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5
Q

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

A

c. Soft Contact Lens

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6
Q

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

A

b. Soflens

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7
Q

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

a. Rigid gas permeable CL

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8
Q

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

a. Rigid non-gas permeable CL

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9
Q

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

a. Rigid gas permeable CL

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10
Q

It is manufactured from plastic or thermoplastic material

a. Rigid non-gas permeable CL
b. Rigid gas-permeable CL
c. Soft Contact Lens

A

a. Rigid non-gas permeable CL

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11
Q

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

a. High Flourine

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12
Q

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

A

c. Surface haze

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13
Q

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

A

b. Otto Wichterle

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14
Q

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

A

c. Soft Contact Lens

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15
Q

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

A

b. Rigid gas-permeable CL

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16
Q

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

a. Harry Green

17
Q

History of Soft CL: The ‘Bionite’ soft lens was developed by

a. Harry Green
b. Otto Wichterle
c. Drahoslav Lim
d. Allen Isen

A

d. Allen Isen

18
Q

History of Soft CL: He experimented with soft lenses, working together with

a. Harry Green
b. Otto Wichterle
c. Drahoslav Lim
d. Allen Isen

A

b. Otto Wichterle

19
Q

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

a. Rigid gas permeable CL

20
Q

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

a. Rigid non-gas permeable CL

21
Q

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

A

c. Soft Contact Lens

22
Q

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

A

c. Soft Contact Lens

23
Q

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

a. Rigid non-gas permeable CL

24
Q

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

a. Bausch & Lomb

25
Q

CL Material: It gives rigidity to the GP lens

a. Acrylate
b. Fluorine
c. Silicone
d. Styrene

A

a. Acrylate

26
Q

History of Soft CL: The first extended wear lens was

a. Bionite
b. Geltak
c. Permalens
d. Spofa

A

c. Permalens

27
Q

History of Soft CL: They produced the first non-HEMA material soft lens

a. Bausch & Lomb
b. Cooper
c. CIBA
d. Syntex

A

d. Syntex

28
Q

History of Soft CL: The first non-HEMA material soft lens is called

a. Permalens
b. Bionite
c. CSI
d. Spofa

A

d. Spofa

29
Q

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

A

d. Cross-linking agents

30
Q

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

A

b. Otto Wichterle

CONTACT LENS (RNH) (8 decks)

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