To compare the effects of femtosecond laser-assisted cataract surgery (FLACS) and conventional phacoemulsification surgery (CPS) on subfoveal choroidal thickness (SFCT) in age-related cataracts.
It is not clear whether femtosecond laser-assisted cataract surgery (FLACS) alters retinal and choroidal thickness. The goal of the present study was to determine the changes of retinal and choroidal thicknesses in patients who have undergone FLACS compared to patients who have undergone conventional phacoemulsification surgery (CPS).
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
40
A femtosecond laser (Alcon-Lensx, Alcon-Lensx, Inc.) was used in this study. After pupil dilation and topical anesthesia, the laser was docked to the eye using a curved contact lens to applanate the cornea. With the integrated OCT imaging system, the locations of the cornea and the anterior and posterior surfaces of the crystalline lens were determined. A 5.0-mm-diameter capsulotomy was created by scanning a cylindrical pattern and followed by lens fragmentation. The laser was disconnected, and the remainder of the surgery was performed as phacoemulsification (Infiniti® Vision System; Alcon, USA). Folded intraocular lenses (IOLs) were implanted in the capsular bags.
Phacoemulsification was performed through a temporal 3.2-mm clear corneal incision with the same machine and followed by IOLs implantation.
Zhongshan Ophthalmic Center, Sun Yat-sen University
Guangzhou, Guangdong, China
The change of subfoveal choroidal thickness
The subfoveal choroidal thickness were measured at baseline and at 1 day, 7 days , 1 month , and 3 months postoperatively by spectral-domain optical coherence tomography.
Time frame: baseline, at 1 day after surgery, 7 days after surgery, 1 month after surgery, and 3 months after surgery
The change of subfoveal retinal thickness
The subfoveal retinal thickness were measured at baseline and at 1 day, 7 days , 1 month , and 3 months postoperatively by spectral-domain optical coherence tomography.
Time frame: baseline, at 1 day after surgery, 7 days after surgery, 1 month after surgery, and 3 months after surgery
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After pupil dilation, 1 drop of tropicamide (0.5%) was applied every 15 minutes for 3 applications
topical anesthesia with proparacaine hydrochloride (0.5%) was applied.