PURPOSE: To compare the efficacy and safety outcomes
of bimanual microincision cataract surgery (MICS) versus
2.2-mm coaxial phacoemulsification assisted by Femtosecond
LenSx (Alcon-LenSx Inc., Aliso Viejo, CA).
METHODS: This prospective, randomized, observational,
comparative case series comprised 50 cataractous
eyes of 50 patients receiving femtosecond laser refractive
lens surgery followed by a bimanual MICS technique
with two 1-mm incisions (25 patients) (FemtoMICS
group) and a coaxial phacoemulsification technique with
a 1-mm paracentesis and a 2.2-mm principal incision
(25 patients) (FemtoCoaxial group). The main outcomes
measures were: ultrasound power, effective phacoemulsification
time, postoperative spherical equivalent,
higher-order aberrations (corneal and internal), corneal
thickness, endothelial cell count, macular thickness, and
complications during and after surgery. Both groups were
absolutely comparable for all variables preoperatively.
RESULTS: Mean ultrasound power was 1.8% ± 0.9%
for MICS and 14.7% ± 4.9% for 2.2-mm incisions (P
< .001). Effective phacoemulsification time values for
MICS and 2.2-mm incisions were 1.5 ± 0.9 and 4.5
± 2.9 sec, respectively (P = .002). Mean postoperative
spherical equivalent was -0.26 for FemtoMICS and
-0.33 for FemtoCoaxial (P > .05). The efficacy index at 1
month postoperatively was 160.2% for FemtoMICS and
149% for FemtoCoaxial. No significant differences were
found in corneal thickness, endothelial cell count, and
macular thickness. Complications included posterior capsule
rupture (4%) and anterior capsule rupture with no
posterior capsule tear (4%) for FemtoMICS and bridges
due to incomplete capsulorhexis (4%) for FemtoCoaxial.
CONCLUSIONS: MICS and coaxial phacoemulsification
techniques assisted by the Femtosecond LenSx
achieved excellent safety and efficient outcomes. The
FemtoMICS technique was surgically and statistically
more efficient than the FemtoCoaxial technique.
قسم البحث
مجلة البحث
Journal of Refractive Surgery
المشارك في البحث
تصنيف البحث
1
عدد البحث
Vol. 30, No.1
سنة البحث
2014
ملخص البحث