Glossary entry

English term or phrase:

saturn-type lens

Croatian translation:

hibridne kontaktne leće Saturn

Added to glossary by Andreja Ciković
Feb 19, 2014 09:27
10 yrs ago
3 viewers *
English term

saturn-type lens

English to Croatian Tech/Engineering Medical (general) lenses
The rigid center of the saturn-type lens immediately begins reshaping the cornea.
Proposed translations (Croatian)
3 +1 hibridne kontaktne leće Saturn

Proposed translations

+1
3 hrs
Selected

hibridne kontaktne leće Saturn

Hybrid lens
This has a rigid 6 mm central optical portion. The large diameter skirt provides good contraction whereas central RGP (Rigid Gas Permeable) portion provides clarity of vision.
The lens movement must be to the tune of 0.2 mm assessed by exerting manual pressure over the lid. It must be evaluated after 2 to 3 weeks of wearing to rule out a peripheral seal off. < b Prototype lens is the SoftPerm (based on the historical Saturn and Saturn II hybrid lenses). >
http://books.google.hr/books?id=6yNlhpcNSQMC&pg=PA134&lpg=PA...

A saturn-type contact lens, such as the Softperm™ lens sold by Sola Bames Hynds-Pilkington may be utilized. This type of lens comprises a lens with a rigid center and a soft lens peripheral skirt. The rigid, preferably gas permeable center contains no enzyme or agent whereas the soft lens peripheral skirt may be soaked in a solution containing the corneal enzyme or agent.
http://www.google.com.mx/patents/US6537545
http://www.google.it/patents/EP1159941A2?cl=en

< b Hibridne kontaktne leće. Imaju centralni dio izrađen od materijala tvrde kontaktne leće, dok je vanjski dio koji prekriva rožnicu izrađen od materijala meke kontaktne leće i na taj način omogućava nosiocu odličnu vidnu oštrinu, ali i udobnost. >
http://www.optometrija.net/kontaktne-lece/kontaktne-lece/

Hibridne leće se sastoje od krutog središta okruženog mekanim rubom. Ove leće kombiniraju solidnu optiku krute leće s udobnošću mekanih.
http://www.ordinacija.hr/zdravlje/zdrave-oci/astigmatizam-sa...

Hibridne kontaktne leće karakterizirane su tvrdom (plinopropusnom) sredinom koja je okružena vanjskim mekanim prstenom. Hibridne kontaktne leće bi mogle biti dobra opcija u slučaju da imate nepravilno oblikovanu rožnicu (keratokonus) ili imate probleme s nošenjem tradicionalnih polutvrdih leća.

Tvrde i polutvrde leće
Klasične tvrde leće izrađene su od PMMA materijala koji ne propušta kisik (Dk=0) te su sve manje u upotrebi. Svoje mjesto ustupile su plinopropusnim (polutvrdim, eng. RGP – Rigid Gas permeable) kontaktnim lećama. Materijali plinopropusnih leća fleksibilniji su i propusniji za kisik od materijala PMMA tvrdih leća. Za razliku od mekanih, plinopropusne leće oblikom su manje i znatno pokretljivije što omogućuje bolji protok suza i dodatnu opskrbu rožnice kisikom.
http://www.opto-centar.hr/vodic-kroz-vrste-leca.html

Poseban tip kontaktnih leća koje se rabe u korekciji keratokonusa jesu hibridne kontaktne leće. Kod takvog tipa kontaktnih leća centralni je dio izrađen od tvrdog materijala radi postizanja boljih optičkih svojstava, a periferni dio, koji okružuje tvrdi centar, od hidrofilnog mekanog materijala.

Tvrde PMMA kontaktne leće upotrebljavaju se od 40-ih godina
prošlog stoljeća. U 70-ima su ih postupno zamijenile
tvrde plinopropusne kontaktne leće, popularno nazvane
polutvrdim lećama. Materijali ovih leća fleksibilniji su i propusniji
za kisik od klasičnih tvrdih leća.
09_Kalauz.pdf MEF Zagreb

Softperm lenses (CibaVision) are unique lenses consisting of an RGP center with a soft, hydrophilic skirt.
https://is.muni.cz/do/med/zpravyprac/Optometrie/Sbornik_pred...
Peer comment(s):

agree Davor Ivic
2 days 8 hrs
Hvala Vam Davore!
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4 KudoZ points awarded for this answer. Comment: "Hvala!"

Reference comments

2 days 12 hrs
Reference:

hibridne leće

The first hybrid contact lens was introduced in 1983 as the Saturn II design by Precision-Cosmet. Due to design performance issues, the lens was re-designed and re-introduced by Sola/Barnes-Hind Inc. laboratories as the SoftPerm lens in 1985. The initial indications for this hybrid contact lens included improving performance and comfort for the fitting of irregular corneas in comparison to rigid contact lenses. In addition, it was designed for managing regular astigmatism and spherical refractive error for cases in which rigid contact lens adaptation could not be achieved.
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