Abstract
Purpose To investigate the effects of capsulotomy shape on the visual acuity and visual quality after neodymium: yttrium aluminum garnet laser capsulotomy. Methods In this study, a total of 42 eyes from 35 patients with posterior capsule opacification were divided into the circular and cruciate groups. The corrected distance visual acuity (CDVA), objective scatter index (OSI), modulation transfer function cutoff (MTF cutoff), Strehl ratio, and Optical Quality Analysis System values at contrasts of 100%, 20%, and 9% (OV-100, OV-20, and OV-9) were measured at precapsulotomy and 1 week and 1 month postcapsulotomy. The pseudophakic dysphotopsia questionnaire (PDQ) was used to evaluate the subjects' satisfaction with treatment. Results OSI values were significantly higher in the cruciate group than in the circular group at 1 week and 1 month after capsulotomy (P=0.013 and P < 0.001). No significant difference was found in the OSI values between the two groups before capsulotomy (t = 0.52; P=0.61). The decrease in OSI was higher in the circular group than in the cruciate group at 1 week and 1 month after capsulotomy (P=0.036 and P=0.019). No significant differences were found in the Strehl ratio, MTF cutoff, CDVA, OV-100, OV-20, and OV-9 between the two groups at 1 week and 1 month after capsulotomy (P > 0.05). The PDQ results showed that patients with circular-shaped capsulotomy complained less with intolerance of bright lights than those with cruciate-shaped capsulotomy. Conclusions Circular-shaped capsulotomy can induce less intraocular light scattering and increase patient satisfaction.
Highlights
Phacoemulsification combined with foldable intraocular lens (IOLs) implantation can markedly improve visual acuity and contrast sensitivity in patients with cataracts
Ursell et al [3] followed up 13,329 eyes implanted with AcrySof IOL, 19,025 eyes implanted with non-AcrySof hydrophobic IOL, and 19,808 eyes implanted with non-AcrySof hydrophilic IOL for 3 years and found a 3year incidence of posterior capsular opacification (PCO) and neodymium: yttrium aluminum garnet (Nd):YAG capsulotomy ranging from 4.7% to 14.8% according to the different IOL materials used
We evaluated the effects of capsulotomy shape on visual function after capsulotomy. e mean objective scatter index (OSI) values of the cruciate group at 1 week and 1 month postcapsulotomy were markedly higher than those of the circular group
Summary
Phacoemulsification combined with foldable intraocular lens (IOLs) implantation can markedly improve visual acuity and contrast sensitivity in patients with cataracts. Posterior capsular opacification (PCO) is a common complication after cataract surgery. Lundqvist and Monestam found that over one-third of patients received neodymium: yttrium aluminum garnet (Nd:YAG) laser capsulotomy for PCO in 10 years after cataract surgery [1]. Schaumberg et al [2] showed that the incidences of PCO at 1, 3, and 5 years after cataract surgery are 11.8%, 20.7%, and 28.4%, respectively. Ambroz et al [4] found PCO in 30.9% of the surveyed eyes at 18.4–50.2 months after pediatric cataract surgery. In pediatric cataract patients without posterior capsulotomy and anterior vitrectomy, the incidence of PCO was as high as 70% [5]
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