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Experience with the lathe cut Bausch & Lomb SOFLENS: Part 1--Clinical study
Journal of the American Optometric Association
|March 1, 1978
Summary
New lathe cut Bausch & Lomb SOFTLENS offer improved visual acuity compared to spin cast lenses. While comfort is comparable, larger lathe cut designs may cause mild circum-corneal injection in some patients.
Area of Science:
- Ophthalmology
- Optometry
- Biomedical Engineering
Background:
- Soft contact lenses are widely used for vision correction.
- Advancements in manufacturing, such as lathe cutting, aim to improve lens performance.
- Bausch & Lomb SOFTLENS represent a recent development in soft contact lens technology.
Purpose of the Study:
- To evaluate the clinical performance of the newly manufactured lathe cut Bausch & Lomb SOFTLENS.
- To compare visual acuity and patient comfort between lathe cut and spin cast SOFTLENS.
- To identify any adverse effects associated with the lathe cut lens design.
Main Methods:
- Clinical fitting of sixteen patients with both spin cast and lathe cut Bausch & Lomb SOFTLENS.
- Assessment of visual acuity for each lens type.
- Subjective evaluation of patient comfort.
- Clinical observation for signs of ocular irritation, such as circum-corneal injection.
Main Results:
- Patients achieved better visual acuities with the lathe cut SOFTLENS compared to the spin cast version.
- Patient comfort was reported as good for both lens types.
- A notable degree of circum-corneal injection was observed in some patients fitted with the larger lathe cut lens design.
Conclusions:
- The lathe cut Bausch & Lomb SOFTLENS demonstrate superior visual performance over spin cast lenses.
- While generally comfortable, the larger lathe cut designs warrant monitoring for potential mild ocular irritation.
- Further investigation into optimizing lathe cut lens parameters may enhance patient outcomes.