tints

Question 1

graduated tint description

Answer 1

darker at top and light at bottom

can be single or dual coloured

Question 2

pros of graduated tint

Answer 2

px can read in sunlight

cosmetics

Question 3

cons of graduated tint

Answer 3

tint degrades with age

Question 4

photochromic description

Answer 4

darkens when exposed to uv light

Question 5

pros of photochromic

Answer 5

no separate sunglasses required
full uv protection
equitint can be used on high rx

Question 6

cons of photochromic

Answer 6

take longer to lighten than darken
less reactive behind uv filter
residual colour with age
darken in cold temperatures

Question 7

fixed tint description

Answer 7

glass- solid or laminated

plastic= dip dye

Question 8

pros of fixed tint

Answer 8

solid doesn’t degrade with age as embedded within glass rather than dip dye

Question 9

cons of fixed tint

Answer 9

one shade throughout. limited to uses and tint degrades with age

Question 10

polarised tint description

Answer 10

polarised lens the vibrations are limited to one meridian. polarised in plane parallel to to reflecting surface.

Question 11

pros of polarised tint

Answer 11

reduces glare and discomfort

good for px who fish, water sports

Question 12

cons of polarised tint

Answer 12

can be used for driving however hard to see lcd displays on dashboard

Question 13

ir lenses description

Answer 13

ir lenses protects against heat cataract and retinal burns from exposure to sun, furnaces and explosions

Question 14

why must you apply uv coating to tinted lenses

Answer 14

pupils dilate–> more uv exposure–> more damage

Question 15

why do px tint their lenses

Answer 15

enhance contrast
cosmesis
frame choice
protection

Question 16

what does green tint do

Answer 16

transmits all colours evenly
dims glare
brightens shadows

Question 17

who would u recommend green tint to

Answer 17

all outdoor activities in any weather conditions

rayban g-15

Question 18

brown/amber tint

Answer 18

improves contrast

enhances depth perception

Question 19

brown tint recommendation

Answer 19

golf, tennis any sport when distance needs to be judged.

good for weather that changes frequently

Question 20

yellow tint

Answer 20

greater clarity in fog and low light conditions

filters out blue light which makes focusing difficult

Question 21

yellow tint recommendation

Answer 21

skiing, mountain biking, hunting. good in foggy condition

Question 22

purple tint

Answer 22

helps see contours and improves colour perception
cosmetically appealing
reduces glare

Question 23

purple tint recommendation

Answer 23

spectator and gold

misty, foggy and snowy conditions

Question 24

grey tint

Answer 24

anti fatigue
true colour perception
provides overall protection
reduces flare

Question 25

grey tint recommendation

Answer 25

driving baseball tennis sunny days

Question 26

pink/red

Answer 26

enhances visual depth reduces eye strain good road visibility helps adjust contrast

Question 27

pink/red recommendation

Answer 27

cycling, racing, driving

Question 28

what is the grading for tints

Answer 28

``` 0- clear to very light- 80-100% 1-light tint- 43-80% 2- medium tint- 18-43% 3- dark tint- 8-18% 4- very dark tint- 3-8% ```

Question 29

mirror tint coatings

Answer 29

supplied with dark tint so wearer doesn't see themselves in the reflection utilises constructive critiscism doesn't wear well tends to scratch easily

Question 30

uv coating

Answer 30

clear protects from uv damage not always provided with tinted lenses