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A hard lens with extended wear possibilities
Journal of the American Optometric Association
|March 1, 1985
Summary
New silicone acrylate contact lenses allow sufficient tear flow for overnight wear. Over 80% of successful hard lens wearers could transition to extended wear with this new material.
Area of Science:
- Ophthalmology
- Materials Science
Background:
- Extended wear contact lenses require careful consideration of multiple parameters beyond oxygen transmission.
- Maintaining corneal health during overnight lens wear is critical.
Purpose of the Study:
- To evaluate a new silicone acrylate contact lens material for extended wear.
- To assess the potential for sufficient tear flow to support overnight contact lens wear.
Main Methods:
- A new silicone acrylate lens material was used for fitting patients.
- Patient outcomes were assessed for extended wear suitability, particularly focusing on corneal viability.
Main Results:
- The new silicone acrylate lens demonstrated sufficient tear flow to maintain a viable cornea during overnight wear.
- Over 80% of patients previously successful with hard contact lenses could successfully use these lenses on an extended basis.
Conclusions:
- Silicone acrylate lenses show promise for extended wear due to adequate tear circulation.
- This material represents a viable option for patients seeking overnight contact lens wear, building on prior hard lens success.