Unit 1 Flashcards

1
Q

Plastic lens Refractive indices

A

CR 39
1.6
1.67
1.74

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2
Q

Polycarbonate refractive index

A

1.586

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3
Q

Trivex refractive index

A

1.53

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4
Q

Refractive indices of glass

A

1.53
1.6
1.7
1.8
1.9

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5
Q

Solutions to eyeglass allergies

A

-Titanium or stainless steel
-Hard plastic
-Non-silicone nose pads

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