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Zentriersteg

English translation: haptics

GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW)
German term or phrase:Zentriersteg
English translation:haptics

20:58 Oct 9, 2001
German to English translations [PRO]
Tech/Engineering
German term or phrase: Zentriersteg
In a text about the accommodating lens or IOL (intraocular lens):

...dieser Typ IOL mit knickbaren Zentrierstegen.."
Jean Colton
United States
Local time: 16:03
haptics
Explanation:
I have done a lot of interpreting work for a major IOL manufacturer (including factory tours). The little handles (or "loops") with which the IOL is centered in the eye are called haptics. (One reference, listed below, also uses "haptic loop").

There are 2 types of IOLs: single piece (the haptics are cut from the same material as the lens, the lens itself is foldable - in fact, I have one sitting on my desk), or three piece (the haptics are laser-welded to the edges of the lens).

No hits on IOL +Zentriersteg/e/n, this does seem to be a rather unusual term. German ophthalmologists usually refer to "Haptiken". It is understood that the haptics are used to center the IOL.

... the soft acrylic haptics, centering of the SA30AL after ... is excellent. The trailing haptic would often fold over ... appearance of the IOL is normal and acceptable ...
www.occojournal.com/interviews/interview0001/

Ophthalmologists are traditionally concerned about damaging the haptic loops during implantation of three-piece lenses. When using a forceps, there's always a possibility of crimping the loop while passing through a small incision.
"A damaged, asymmetric loop can cause the IOL to be decentered," said Jules Stein Eye Institute cataract surgeon Samuel Masket, MD. "Explantation is often necessary because a loop is completely damaged."
Marshalltown, Iowa ophthalmologist Jim Davison, MD, is particularly impressed with the AcrySof's haptics and their ability to maintain compression force over time. He likes the fact that after a few seconds, the haptics, which are folded during insertion, spread out and hold very tightly to the capsule walls while centering the optic with the surgeon's guidance.
Dr. Davison refers to this as "active centration."
"If you bend the haptic, it will always return to its original position," he said. "Where you leave it is where it's going to stay. Other lenses are very much passively centered."
www.findarticles.com/cf_0/m0VEY/13_25/63792646/p1/article.j...

If you need more reference materials, a Google search on IOL + haptics will yield a wealth of results.
HTH
Selected response from:

Ulrike Lieder (X)
Local time: 13:03
Grading comment
Many thanks for the clear explanation and website references. The German "Steg" is what really threw me, with so many different meanings.

Appreciate your help very much.
4 KudoZ points were awarded for this answer



Summary of answers provided
5 +2haptics
Ulrike Lieder (X)
4centering guide
Daniela Mühling
4centering rack
Daniela Mühling
4haptic (monofilament)
Hans-Henning Judek


  

Answers


27 mins   confidence: Answerer confidence 4/5Answerer confidence 4/5
centering guide


Explanation:
See this web page with very detailed illustrations:




    Reference: http://www.ocalaeye.com/ophthalmology/visioncorrection.html
Daniela Mühling
Spain
Local time: 22:03
PRO pts in pair: 107

Peer comments on this answer (and responses from the answerer)
agree  Hans-Henning Judek: This sounds good. Could not find any other term
16 mins
disagree  Sven Petersson: The "centering guide" described in your reference is not part of an IOL but a tool.
17 mins
  -> True enough. See next answer...
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49 mins   confidence: Answerer confidence 4/5Answerer confidence 4/5
centering rack


Explanation:
From Eurodicautom:

Steg
Definition Teile der Fassung einer Optik,in denen Ringe befestigt sind
Reference IALA Int Seezeichen-Wb 2:optische Seezeichen
English Term rack
Definition parts of the frame of an optic,into which the rings are fitted
Reference IALA Int Dic Aids Marine Navigation 2:visual aids


Daniela Mühling
Spain
Local time: 22:03
PRO pts in pair: 107
Login to enter a peer comment (or grade)

1 hr   confidence: Answerer confidence 5/5 peer agreement (net): +2
haptics


Explanation:
I have done a lot of interpreting work for a major IOL manufacturer (including factory tours). The little handles (or "loops") with which the IOL is centered in the eye are called haptics. (One reference, listed below, also uses "haptic loop").

There are 2 types of IOLs: single piece (the haptics are cut from the same material as the lens, the lens itself is foldable - in fact, I have one sitting on my desk), or three piece (the haptics are laser-welded to the edges of the lens).

No hits on IOL +Zentriersteg/e/n, this does seem to be a rather unusual term. German ophthalmologists usually refer to "Haptiken". It is understood that the haptics are used to center the IOL.

... the soft acrylic haptics, centering of the SA30AL after ... is excellent. The trailing haptic would often fold over ... appearance of the IOL is normal and acceptable ...
www.occojournal.com/interviews/interview0001/

Ophthalmologists are traditionally concerned about damaging the haptic loops during implantation of three-piece lenses. When using a forceps, there's always a possibility of crimping the loop while passing through a small incision.
"A damaged, asymmetric loop can cause the IOL to be decentered," said Jules Stein Eye Institute cataract surgeon Samuel Masket, MD. "Explantation is often necessary because a loop is completely damaged."
Marshalltown, Iowa ophthalmologist Jim Davison, MD, is particularly impressed with the AcrySof's haptics and their ability to maintain compression force over time. He likes the fact that after a few seconds, the haptics, which are folded during insertion, spread out and hold very tightly to the capsule walls while centering the optic with the surgeon's guidance.
Dr. Davison refers to this as "active centration."
"If you bend the haptic, it will always return to its original position," he said. "Where you leave it is where it's going to stay. Other lenses are very much passively centered."
www.findarticles.com/cf_0/m0VEY/13_25/63792646/p1/article.j...

If you need more reference materials, a Google search on IOL + haptics will yield a wealth of results.
HTH


    pertinent professional experience
    given above
Ulrike Lieder (X)
Local time: 13:03
Native speaker of: German
PRO pts in pair: 3525
Grading comment
Many thanks for the clear explanation and website references. The German "Steg" is what really threw me, with so many different meanings.

Appreciate your help very much.

Peer comments on this answer (and responses from the answerer)
agree  Daniela Mühling: Ignore my previous suggestions. I defer to Ulrike who is obviously infinitely more experienced in this field than I am.
11 mins
agree  Sven Petersson: Perfect!
18 mins
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1 hr   confidence: Answerer confidence 4/5Answerer confidence 4/5
haptic (monofilament)


Explanation:
After Sven's comment, i had second thoughts, too.

Please have a look at the websites below. The "Steg" is the two C- or S-shaped parts at the periphery of the lens.

http://www.dog.org/1999/e-abstract99/411.html


    Reference: http://rafisystems.com/ophthalmic/iolchart.html
    Reference: http://www.biogeneral.com/iolhaptic.htm
Hans-Henning Judek
Local time: 05:03
Native speaker of: Native in GermanGerman
PRO pts in pair: 893
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