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Initial comfort and surface wettability: a comparison between different contact lens materials
R O Hatfield1, D R Jordan, E S Bennett
1University of Missouri-St. Louis 63121.
Journal of the American Optometric Association
|April 1, 1993
Summary
The D3X4 contact lens offered superior initial comfort compared to Novalens and ENVISION. Surface wettability was similar across all three rigid lens materials tested.
Area of Science:
- Ophthalmology
- Materials Science
- Biomedical Engineering
Background:
- Contact lens comfort and wettability are crucial for patient satisfaction and ocular health.
- Evaluating new contact lens materials is essential for improving vision correction devices.
Purpose of the Study:
- To compare the initial comfort and surface wettability of three rigid gas permeable contact lens materials: Novalens, ENVISION, and D3X4.
- To determine if significant differences exist in subjective comfort and objective wettability among these lens types.
Main Methods:
- A randomized clinical investigation involving fifteen subjects.
- Each subject was fitted with all three lens materials (Novalens, ENVISION, D3X4) to assess initial comfort.
- Surface wettability of the lens materials was measured objectively.
Main Results:
- Initial comfort was significantly higher with the D3X4 lens material.
- No significant difference in initial comfort was found between Novalens and ENVISION rigid lens materials.
- No significant difference in lens surface wettability was observed among the three materials tested.
Conclusions:
- The D3X4 contact lens material demonstrates an advantage in initial wearer comfort.
- Novalens and ENVISION exhibit comparable initial comfort levels.
- All three investigated rigid contact lens materials possess similar surface wettability characteristics.