Real-Time Ocular Comfort Reporting in Monthly Replacement Contact Lens Wearers

Performance of a Toric, Monthly, Soft Contact Lens in Digital Device Users

Purpose

To determine the performance of TOTAL30 for Astigmatism (T30fA; Alcon; Fort Worth, TX, USA) contact lenses (CLs) in existing CL wearers who are also frequent digital device users.

Methods

This 1-month, 3-visit study recruited adult, 18- to 40-year-old subjects who were required to use daily digital devices for at least 8 hours per day. All subjects were refit into T30fA CLs. A text message visual analog scale (VAS) (±50 scale; positive being comfortable) evaluate at-home eye comfort across the day at 1 day, 1 week, and 1 month. Subjects were evaluated at 1 month with the Computer Vision Syndrome Questionnaire (CVS-Q), Impact of Dry Eye on Everyday Life (IDEEL) Quality of Life questionnaire, and a custom questionnaire.

Results

A total 48 subjects were analyzed (mean age = 28.8 ± 6.3 years; 75% female). At 1 month, IDEEL daily activities, feelings, and work domains scores were 96.7 ± 6.6, 96.4 ± 6.2, and 94.8 ± 8.6, respectively. CVS-Q scores were 3.48 ± 3.73. Most of the subjects indicated that they were satisfied with the overall performance of the study CLs (81.3%) and with their level of eye strain with the study CLs (87.3%). When evaluating CL comfort with the VAS, comfort did not differ across the month at each time point (all p-value ≥ 0.16), yet CL comfort did decrease minimally across the wear day (all p-value < 0.001).

Conclusion

These data suggest that the monthly study CLs can provide an excellent wearing experience for those with frequent digital device use.

Real-Time Changes in the Comfort of a Toric, Monthly, Soft Contact Lens Over a Long Day of Wear

Purpose

The purpose of this work was to determine the comfort performance of a toric, monthly, silicon hydrogel CL (lehfilcon A; TOTAL30 for Astigmatism) over a long day of wear.

Methods

This was a 1-month, 3-visit, prospective, single-arm study. Adult, 18- to 45-year-old CL wearers with good vision who were minimally symptomatic (CLDEQ-8 scores ≤12) were enrolled. Subjects were required to have astigmatism ranging from -0.75 D to -2.50 D in each eye and were required to wear the study CLs from about 8:00 AM until 12:00 AM each day. Comfort data with the study CL throughout the wear day were collected via text messaging.

Results

A total of 47 subjects who had a mean ± SD age of 29.5 ± 7.0 years were analyzed. Within a specified time point across the month of wear, CL comfort did not vary (all p-value ≥ 0.82), yet CL comfort did decrease across the wear day for all days evaluated (all p-value <0.001). Most subjects found their CLs to be comfortable with only 1.8% of subjects reporting an uncomfortable score at CL application and only 8.5% of subjects reporting an uncomfortable score after 16 hours of CL wear.

Conclusion

A high level of consistency and predictability in comfort was found within the first month of wearing lehfilcon A CLs. This suggests that patients with minimal CL-related discomfort at initial fitting of a lehfilcon A CL may likely tolerate longer wear time with minimal discomfort across the entire month of wear.

Clinical Trialsgov Id

NCT06052046.

Refitting contact lens dropouts into a modern daily disposable contact lens

PURPOSE

To determine the number of previous contact lens (CL) wearers who could be comfortably refitted into delefilcon A (DAILIES TOTAL1®) CLs.

METHODS

This was a 6-month, three-visit study that recruited subjects who discontinued CLs within the past 2 years because of discomfort or dryness symptoms. Subjects were required to have Standard Patient Evaluation of Eye Dryness (SPEED) questionnaire scores ≤3 and to be able to wear spherical study CLs. Subjects were asked to complete a ±50 comfort visual analogue scale (VAS) at 1 month and a Likert questionnaire after 1 and 6 months of CL wear to understand the subjects' CL experience.

RESULTS

All 60 subjects who were fitted with the study CLs were still wearing them after 1 month, while one subject had dropped out by 6 months. Subjects had a median (interquartile range) age of 24.0 (7.0) years (71.7% female). They reported a median VAS score of 44.0 (8.0) units at the 1-month visit, with all reporting a comfortable score. At the 1-month/6-month visits, 98.3%/93.2%, 86.5%/78.0% and 93.2%/91.5% of subjects responded that they were very satisfied or satisfied with their vision, their end-of-day CL comfort and overall CL comfort, respectively. The same subjects responded that they were very likely or likely to continue to wear the study CLs at 1 (89.6%) and 6 months (80.7%) and to recommend the study CLs to a friend at 1 (98.3%) and 6 months (93.2%).

CONCLUSIONS

The results suggest that when encountering a CL dropout, a practitioner could educate a patient about trying an alternative CL and consider delefilcon A lenses as an option.