勝率高/賠率相對高/頻率低是最好的投資法?

The PMMA Dilemma | 合法醫療器材資訊網

The PMMA Dilemma

2010年3月17日—WhenrefittingintoGPlenses,therecommendationistoduplicatethefitofthePMMAlensascloselyaspossible,usingalow-tomedium-Dk ...

 The PMMA Dilemma

There are still many people who are wearing PMMA lenses. Some patients wear them without problems, while others only think they’re having no problems. I was curious about practitioners’ opinions on whether or not to refit these patients into state-of-the-art gas-permeable (GP) materials. So, I decided to survey my colleagues and received input from Christine Sindt, O.D., F.A.A.O., of the University of Iowa, and Arizona private practitioners Robert Maynard, O.D., Charles Edmonds, O.D., and Ken Johnson, O.D.

Ideal Candidates The four doctors agreed that the treatment choice would depend on answers to the following questions:

• How long has the patient been out of lenses (if at all)? • Is the correction stable? • How long are the lenses worn each day? • Has the patient been under a certain doctor’s care for several years, or is he or she new to the practice? • Has the patient had problems in the past, wh...

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PMMA contact lenses | 合法醫療器材資訊網
PMMA: A contact lens classic, now in disrepute ... PMMA (polymethyl methacrylate) — better known as Plexiglas or acrylic — was once considered the best material ... Read More
Rigid gas permeable (RGP or GP) contact lenses | 合法醫療器材資訊網
Most gas permeable lens materials include silicone, which makes GP lenses more flexible than PMMA hard contacts. And silicone allows oxygen to pass directly ... Read More
Types of Contact Lenses | 合法醫療器材資訊網
Conventional hard lenses (PMMA). Conventional hard contact lenses are made of a fairly stiff plastic (polymethyl methacrylate, or PMMA), which does not mold to​ ... Read More
The PMMA Dilemma | 合法醫療器材資訊網
2010年3月17日 — When refitting into GP lenses, the recommendation is to duplicate the fit of the PMMA lens as closely as possible, using a low- to medium-Dk ... Read More
Buy PMMA RGP Contact Lenses Online | 合法醫療器材資訊網
PMMA Product Information ... The original hard contact lens, each pair of PMMA RGP contact lenses is made-to-order following the precise specifications of your​ ... Read More
Contact Lens Materials | 合法醫療器材資訊網
由 CSA Musgrave 著作 · 2019 · 被引用 97 次 — In the recent literature, PMMA has typically been utilized as a reference material for investigating various effects of CLs on the eye [64,65,66,67]. Read More
Polymethylmethacrylate Lens | 合法醫療器材資訊網
Contact lens wear with PMMA lenses was shown to produce a chronic and slowly progressive sensitivity reduction which returned to normal on removal of the ... Read More
Blepharoptosis in RGP and PMMA hard contact lens wearers | 合法醫療器材資訊網
由 JHJ Thean 著作 · 2004 · 被引用 38 次 — The majority of contact lens wearers presenting with blepharoptosis gave a history of prolonged use of hard contact lenses. One explanation for this would be ... Read More
The long | 合法醫療器材資訊網
由 SM MacRae 著作 · 1994 · 被引用 74 次 — This study is unique, in that it notes a subgroup of PMMA contact lens wearers who are more susceptible to significant morphometric changes and reduced ... Read More
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