untinted discoloration, tinted discoloration tinted fade

English translation: some lenses are tinted

13:18 Mar 30, 2004

English language (monolingual) [PRO]
Tech/Engineering - Materials (Plastics, Ceramics, etc.)

English term or phrase: untinted discoloration, tinted discoloration tinted fade

The three is under a general topic: contact lens evaluation for discoloration
Please kindly tell me in simple English waht they mean.
Thank You!

Jianming Sun KudoZ activity Questions: 2132 (none open) (13 closed without grading) Answers: 1174
Local time: 13:18

Selected answer:some lenses are tinted

Explanation:
to make brown eyes look like they are blue or green
1) discoloration (change in color) of clear lens
2) discoloration of tinted lens
3) fading (decrease in color intensity) of tinted lens

Frequently Asked Questions about Contact Lens Wear
... A. Typical signs that a lens is approaching the end of its life are hazy vision, discomfort, and lens discoloration and deposits. ...
www.contactlenses.co.uk/education/public/faq2.htm

Selected response from:

RHELLER
United States
Local time: 23:18

Grading comment

Thank You Both!
4 KudoZ points were awarded for this answer

SUMMARY OF ALL EXPLANATIONS PROVIDED

3 +2

some lenses are tinted

RHELLER

see explanation below

reblack

Answers

1 hr confidence:

peer agreement (net): +2

some lenses are tinted

RHELLER
United States
Local time: 23:18
Native speaker of:

English
PRO pts in category: 4

Grading comment

Thank You Both!

1 hr confidence:

see explanation below

Explanation:
Okay, I will give it a shot. The first term, untinted discoloration, is an unintentional change of colour that occurs when lens get old. This term applies to lens that are not tinted to begin with. "Typical signs that a lens is approaching the end of its life are hazy vision, discomfort, and lens discoloration and deposits."
http://www.contactlenses.co.uk/education/public/faq2.htm

The second term, tinted discoloration, is when tinted lens start to discolour (change colour), like above, unintentional due to use.

The third,tinted fade, I imagine is when tinted (coloured) lens begin to fade (the colour gets dull). However, fade can also refer to the tint itself when talking about lens in general. A little more context would be helpful.

I am not an optical expert, so I hope someone who is will pipe up for you.

Reference: http://www.contactlensdocs.com/Tinted%20Contact%20Lenses.htm

reblack
Native speaker of:

English

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English translation: some lenses are tinted

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