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Purpose
To evaluate and compare pupillary diameter variation before and after cataract surgery by conventional phacoemulsification versus femtosecond laser assisted cataract surgery (FLACS) with LDV Z8 laser. We also compared total surgery time and ultrasound time between the two techniques, as well as intraoperative pupillary diameter variation.
Methods
It is a prospective, observational, randomized study that included 79 eyes of 67 patients with cataract. Patients were divided in a control group, which underwent cataract surgery with conventional phacoemulsification, and a study group, with FLACS (performed with LDV Z8 laser). All surgeries were performed by the same surgeon using the Stellaris platform. All patients received topical NSAIDs on the day before surgery. To quantify pupillary size, measurements were performed using a surgical compass: before phacoemulsification and after surgery. In the study group, measurements after laser were added. Total surgical time and ultrasound time were also analyzed.
Results
56 eyes were included in the FLACS group and 23 eyes in the control group. There was no statistically significant difference between pre-femto x pre-phaco pupil (8.71±0.44 mm x 8.62±0.72 mm; p=0.497), as well as pupil size at the end of surgery (7.87 ±1.06mm x 7.75±0.96mm; p=0.644). However, in FLACS group, there was a transient increase in pupillary diameter after laser, from 8.71±0.44 mm to 9.11±0.59mm. There was no statistically significant difference between the mean time of surgery (13.39±1.37 min x13.50±2.04 min; p=0.817) and ultrasound time (33,38 ± 27,36 sec x 35,06 ± 28,80 sec; p=0,749), respectively, between groups.
Conclusion
Although mean pupilary diameter was similar at the end of surgery between the groups, our study showed greater pupil variation in FLACS compared to conventional phaco. Considering this, surgeons must observe the initial pupillary diameter to perform FLACS in order to combine its refractive advantages with lower intra and postop complications.
To evaluate and compare pupillary diameter variation before and after cataract surgery by conventional phacoemulsification versus femtosecond laser assisted cataract surgery (FLACS) with LDV Z8 laser. We also compared total surgery time and ultrasound time between the two techniques, as well as intraoperative pupillary diameter variation.
Methods
It is a prospective, observational, randomized study that included 79 eyes of 67 patients with cataract. Patients were divided in a control group, which underwent cataract surgery with conventional phacoemulsification, and a study group, with FLACS (performed with LDV Z8 laser). All surgeries were performed by the same surgeon using the Stellaris platform. All patients received topical NSAIDs on the day before surgery. To quantify pupillary size, measurements were performed using a surgical compass: before phacoemulsification and after surgery. In the study group, measurements after laser were added. Total surgical time and ultrasound time were also analyzed.
Results
56 eyes were included in the FLACS group and 23 eyes in the control group. There was no statistically significant difference between pre-femto x pre-phaco pupil (8.71±0.44 mm x 8.62±0.72 mm; p=0.497), as well as pupil size at the end of surgery (7.87 ±1.06mm x 7.75±0.96mm; p=0.644). However, in FLACS group, there was a transient increase in pupillary diameter after laser, from 8.71±0.44 mm to 9.11±0.59mm. There was no statistically significant difference between the mean time of surgery (13.39±1.37 min x13.50±2.04 min; p=0.817) and ultrasound time (33,38 ± 27,36 sec x 35,06 ± 28,80 sec; p=0,749), respectively, between groups.
Conclusion
Although mean pupilary diameter was similar at the end of surgery between the groups, our study showed greater pupil variation in FLACS compared to conventional phaco. Considering this, surgeons must observe the initial pupillary diameter to perform FLACS in order to combine its refractive advantages with lower intra and postop complications.
View More Presentations from this Session
This presentation is from the session "SPS-103 Femtosecond Laser Assisted Cataract Surgery" from the 2020 ASCRS Virtual Annual Meeting held on May 16-17, 2020.