soft (periphery)

English translation: hard in the middle

17:12 Jan 26, 2004

English language (monolingual) [PRO]
Medical

English term or phrase: soft (periphery)

What does "soft" mean in this context?
"Out of focus"?

CONTEXT

Very often you'll have a flat centre and a steep periphery, so may need unusual lens shapes, which may need to be trapezoidal, may need to be large, may need to be scleral. We have in the past used hybrid lenses which are both soft and hard (hard in the middle and soft on the periphery). In other words, we have to pull out the whole contact lens inventory, all kinds of lenses, invent lenses, design lenses for individuals in order to fit successfully after a corneal transplant.
Various lens options eg 'piggy back' system of a hard lens on top of a soft lens, or a hybrid lens (hard centre and soft periphery) are possible and work for a small number of patients.

Barbara Piela KudoZ activity Questions: 1476 (8 open) (1 without valid answers) (24 closed without grading) Answers: 471
Local time: 04:17

Selected answer:hard in the middle

Explanation:
The lens is hard only in the middle.

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Note added at 7 mins (2004-01-26 17:20:23 GMT)
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Nothing to do with focus.
This may be of help:

Soft Conatct Lenses UK - softer lens
With so many different types of contact lens on the market the choice of whether
to opt for hard or soft contact lenses can at first seem a little daunting. ...
www.contact-lens.uk.com/soft-contact-lenses-uk.htm - 10k - Cached - Similar pages

Selected response from:

agtranslat
Netherlands
Local time: 04:17

Grading comment

Thanks!!!
4 KudoZ points were awarded for this answer

SUMMARY OF ALL EXPLANATIONS PROVIDED

4 +1

soft

NGK

hard in the middle

agtranslat

soft/rigid combination lens

RHELLER

Answers

6 mins confidence:

peer agreement (net): +1

soft

Explanation:
Soft means soft. "hard centre and soft periphery" = hard in the middle and soft around the edges

Reference: http://en.wikipedia.org/wiki/Contact_lens

NGK
United States
Local time: 21:17
Native speaker of:

English,

German
PRO pts in pair: 379

5 mins confidence:

hard in the middle

agtranslat
Netherlands
Local time: 04:17
Native speaker of:

Spanish
PRO pts in pair: 12

Grading comment

Thanks!!!

16 mins confidence:

soft/rigid combination lens

Explanation:
all soft lenses (and the soft/rigid combination lens) require daily ... There are three ways to disinfect soft lenses: 1 ... rare, it is very serious and hard to treat ...
www.contactlensdocs.com/ Soft%20Contact%20Lens%20Care.htm

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Note added at 17 mins (2004-01-26 17:30:45 GMT)
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patients who have had surgery do not have conventional needs. Most people either wear hard or soft lenses.

RHELLER
United States
Local time: 20:17
Native speaker of:

English
PRO pts in pair: 1252

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