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Intraocular lenses.
1Manchester Cataract Centre at Manchester Royal Eye Hospital, England.
Current Opinion in Ophthalmology
|January 8, 1993
Summary
Despite advances, intraocular lens designs struggle with small-incision cataract surgery needs. Current materials like polymethyl methacrylate, silicone, and acrylics face challenges and ongoing evaluation for optimal patient outcomes.
Area of Science:
- Ophthalmology
- Biomaterials Science
- Surgical Technology
Background:
- Cataract surgery has seen significant intraocular lens (IOL) design advancements.
- Small-incision cataract surgery (SICS) requires IOLs that can be inserted through small incisions.
- Current IOLs often necessitate enlargement of the incision, compromising the benefits of SICS.
Purpose of the Study:
- To review recent developments in intraocular lens designs.
- To identify challenges in matching IOL designs with SICS requirements.
- To discuss the properties and controversies surrounding different IOL materials.
Main Methods:
- Literature review of recent advancements in IOL design.
- Analysis of material properties of polymethyl methacrylate, silicone, and acrylic polymers.
- Discussion of clinical evaluation status and controversies regarding IOLs.
Main Results:
- No significant breakthroughs in IOL designs have occurred recently.
- Existing IOLs require incision enlargement for insertion during SICS.
- Polymethyl methacrylate is widely used, while silicone and acrylics are under consideration and evaluation.
Conclusions:
- There is a persistent need for IOL designs compatible with SICS.
- Ongoing research and clinical evaluation are necessary for new IOL materials like acrylics.
- Phakic IOLs for high myopia require further long-term safety data.