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Purpose
To evaluate the visual outcomes of patients undergoing small incision lenticule extraction (SMILE) with stratification of results pre- and post-FDA astigmatism approval, after which the laser power settings on the Visumax (Carl Zeiss) femtosecond laser platform were lowered.
Methods
A retrospective chart review of 120 consecutive eyes of 60 patients (with an anticipated 336 consecutive eyes of 168 patients in total) who underwent SMILE at two centers from 2017-2019. Visual outcomes were assessed at post-operative day 1, month 1, and month 3, and further compared between pre- and post-astigmatism approval, where laser power settings were decreased. Enhancement rates were also measured.
Results
At post-operative day 1, 49% of patients had uncorrected visual acuity (UCVA) of 20/20 or better following SMILE, 40% of whom were prior to the laser update compared to 72% of whom were after the update. At post-operative month 3, 79% of patients had UCVA 20/20 or better, 73% of whom were prior to the laser update compared to 83% of whom were after the laser update. Enhancement rate measurements are pending.
Conclusion
Following the Visumax laser power setting update in October 2018, more SMILE patients gained 20/20 UCVA at post-operative day 1 and month 3. Surgeon learning curve may also have contributed to these improved visual outcomes.
To evaluate the visual outcomes of patients undergoing small incision lenticule extraction (SMILE) with stratification of results pre- and post-FDA astigmatism approval, after which the laser power settings on the Visumax (Carl Zeiss) femtosecond laser platform were lowered.
Methods
A retrospective chart review of 120 consecutive eyes of 60 patients (with an anticipated 336 consecutive eyes of 168 patients in total) who underwent SMILE at two centers from 2017-2019. Visual outcomes were assessed at post-operative day 1, month 1, and month 3, and further compared between pre- and post-astigmatism approval, where laser power settings were decreased. Enhancement rates were also measured.
Results
At post-operative day 1, 49% of patients had uncorrected visual acuity (UCVA) of 20/20 or better following SMILE, 40% of whom were prior to the laser update compared to 72% of whom were after the update. At post-operative month 3, 79% of patients had UCVA 20/20 or better, 73% of whom were prior to the laser update compared to 83% of whom were after the laser update. Enhancement rate measurements are pending.
Conclusion
Following the Visumax laser power setting update in October 2018, more SMILE patients gained 20/20 UCVA at post-operative day 1 and month 3. Surgeon learning curve may also have contributed to these improved visual outcomes.
View More Presentations from this Session
This presentation is from the session "SPS-104 Refractive Procedure Outcomes: SMILE, SMILE & CXL, ICL" from the 2020 ASCRS Virtual Annual Meeting held on May 16-17, 2020.