Do the new materials keep their promises regarding good lubrication?

Area of Science:

• Ophthalmology
• Biomaterials Science
• Optometry

Background:

• Soft contact lenses are widely used for vision correction.
• Lens material and design influence ocular surface interactions and comfort.
• Understanding lubrication is crucial for contact lens wearability and patient satisfaction.

Purpose of the Study:

• To objectively and subjectively assess the lubrication of six different soft contact lens brands over a one-week wearing period.
• To compare the lubrication performance of various contact lenses using standardized testing methods.
• To correlate optometrist assessments with patient-reported outcomes regarding lens lubrication.

Main Methods:

• Twenty-five subjects participated in a six-week study, wearing six different soft contact lenses in a randomized, masked manner.
• Lubrication was assessed using the "Tear analysis procedure" with a Slitlamp at insertion, after full-day wear, and after one week.
• Both optometrists (objective grading 1-5) and subjects (subjective grading 1-5) evaluated lens performance.

Main Results:

• Statistical analysis revealed significant differences in lubrication and comfort between the tested soft contact lens brands.
• Optometrist and subject evaluations showed varying degrees of correlation, indicating the importance of both objective and subjective measures.
• Specific lens materials demonstrated superior lubrication properties throughout the one-week wearing period.

Conclusions:

• Soft contact lens lubrication varies significantly between different brands and over time.
• A combination of objective clinical assessment and subjective patient feedback is essential for evaluating contact lens performance.
• Findings provide valuable insights for selecting contact lenses that offer optimal comfort and lubrication for extended wear.