Comparison of cumulative dispersed energy (CDE) in femtosecond laser-assisted cataract surgery (FLACS) and conventional phacoemulsification

Comparison of cumulative dispersed energy (CDE) in femtosecond laser-assisted cataract surgery (FLACS) and conventional phacoemulsification

Purpose To compare the amount of phacoemulsification ultrasound energy used between eyes undergoing femtosecond laser-assisted cataract surgery (FLACS) and conventional phacoemulsification. Methods One eye of consecutive patients undergoing routine non-complicated phacoemulsification from January 20...

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Bibliographic Details
Published in:International ophthalmology Vol. 39; no. 8; pp. 1761 - 1766
Main Authors: Saeedi, Osamah J., Chang, Luke Y., Ong, Sharon R., Karim, Syed A., Abraham, Danielle S., Rosenthal, Geoffrey L., Hammer, Andrew, Spagnolo, Brad V., Betancourt, Arturo E.
Format: Journal Article
Language:English
Published: Dordrecht Springer Netherlands 01-08-2019
Springer Nature B.V
Subjects:
Aged
Cataracts
Dispersion
Energy
Eye surgery
Female
Follow-Up Studies
Humans
Laser Therapy - methods
Lasers
Male
Medical personnel
Medicine
Medicine & Public Health
Ophthalmology
Original Paper
Phacoemulsification - methods
Prospective Studies
Regression analysis
Surgeons
Surgery
Treatment Outcome
Ultrasonic Waves
Ultrasound
Visual Acuity
Cumulative dispersed energy
Femtosecond laser-assisted cataract surgery
Ultrasound energy
Alcon LenSx
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Summary:Purpose To compare the amount of phacoemulsification ultrasound energy used between eyes undergoing femtosecond laser-assisted cataract surgery (FLACS) and conventional phacoemulsification. Methods One eye of consecutive patients undergoing routine non-complicated phacoemulsification from January 2014 to December of 2015 was included in the analysis. FLACS was performed using the Alcon LenSx. Linear regression was used for analysis with type of surgery (FLACS versus conventional phacoemulsification) as the exposure and cumulative dispersed energy (CDE) as the outcome variable. Age, surgeon, eye side, and eye sequence (first versus second eye) were covariates. Results A total of 1159 surgeries met inclusion criteria. The average age of the cohort was 70.6 (SD 8.6) years, 590 cases (51%) were performed by surgeon 1, and 582 cases (50%) were right eyes. Overall, FLACS resulted in significantly lower CDE as compared to conventional phacoemulsification ( β  = 0.89, 95% CI 0.83, 0.95). When stratified by eye side and surgeon, FLACS performed on left eyes operated on by surgeon 1 resulted in lower CDE as compared to conventional phacoemulsification ( β  = 0.76, 95% CI 0.66, 0.87), but not for right eyes operated on by surgeon 1 ( β  = 0.92, 95% CI 0.79, 1.07) or for eyes operated on by surgeons 2 or 3. Conclusions The use of FLACS on the Alcon LenSx platform results in a small decrease in phacoemulsification energy as compared to conventional phacoemulsification in certain cases. Further study assessing optimal laser settings and surgical technique is necessary.
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ISSN:0165-5701
1573-2630
DOI:10.1007/s10792-018-0996-x