Soft Contact Lenses

Question 1

What is the water content and centre thickness of a LWC lens?

Answer 1

38-50%

0.04-0.10 mm

Question 2

What is the water content and centre thickness of a MWC lens?

Answer 2

50-60%

0.07-0.12 mm

Question 3

What is the water content and centre thickness of a HWC lens?

Answer 3

60-75%

0.08-0.15 mm

Question 4

What is the water content and centre thickness of a SiHy lens?

Answer 4

24-47%

0.08-0.09 mm

Question 5

What is the typical Dk/t of LWC hydrogel lenses?

Answer 5

17

Question 6

What is the typical Dk/t of MWC hydrogel lenses?

Answer 6

25

Question 7

What is the typical Dk/t of HWC hydrogel lenses?

Answer 7

25

Question 8

What is the typical Dk/t of LWC SiHy lenses?

Answer 8

175

Question 9

What is the typical Dk/t of HWC SiHy lenses?

Answer 9

86

Question 10

What is the typical Dk/t of SA RGP lenses?

Answer 10

27

Range = 12-60

Question 11

What is the typical Dk/t of FSA RGP lenses?

Answer 11

60

Range = 40-100+

Question 12

What is the typical Dk/t of F RGP lenses?

Answer 12

130

Question 13

What is the min required Dk/t for Daily Wear?

Answer 13

24

Question 14

What is the min required Dk/t for Extended Wear?

Answer 14

87

Question 15

FDA - Group I

Answer 15

LWC, non-ionic

Question 16

FDA - Group II

Answer 16

HWC, non-ionic

Question 17

FDA - Group III

Answer 17

LWC, ionic

Question 18

FDA - Group IV

Answer 18

HWC, ionic

Question 19

Group I examples

Answer 19

polyHEMA

Question 20

Group II examples

Answer 20

omafilcon A (Proclear)
Focus Dailies
SofLens Daily Disposable

Question 21

Group III examples

Answer 21

Durasoft

Question 22

Group IV examples

Answer 22

Focus 1-2 wk
etafilcon A (Acuvue 2, 1-day Acuvue)

Question 23

etafilcon A

Answer 23

Acuvue
Acuvue 2
Surevue
1-Day Acuvue
1-Day Acuvue Moist

Question 24

Silicone Hydrogel materials

Answer 24

balafilcon A
lotrafilcon A & B
galyfilcon A
senofilcon A

Question 25

omafilcon A

Answer 25

Proclear

Question 26

lotrafilcon A

Answer 26

Night & Day

Question 27

lotrafilcon B

Answer 27

O2 (Air) Optix

Question 28

balafilcon A

Answer 28

PureVision

Question 29

Senofilcon A

Answer 29

Acuvue Oasys

Question 30

Galyfilcon A

Answer 30

Acuvue Advance

Question 31

Comfilcon A

Answer 31

Bioinfinity

Question 32

narafilcon A

Answer 32

1 Day Acuvue TruEye

Question 33

delefilcon A

Answer 33

Dailies Total1