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Xiaoguang Cao, Yongzhen Bao; Effect of cataract incision type on corneal spherical aberration. Invest. Ophthalmol. Vis. Sci. 2015;56(7 ):662.
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© ARVO (1962-2015); The Authors (2016-present)
Currently, the use of spherical aberration corrected intraocular lens (IOLs) is based on the pre-operative corneal spherical aberration (CSA) of cataract patients. The effect of incision is not considered. The purpose of this study is to investigate the effect of transparent corneal incision (TCI) and scleral tunnel incision (STI) on CSA after cataract phacoemulsification with foldable IOLs.
Age-related cataract 86 eyes were random selected. CSA was measured with diluted pupil by Pentacam Scheimpflug system at 1 day pre-operative and 1 and 3 month post-operative. Preoperative CSA more than 1.00μm was excluded. Both TCI and STI are 3 mm incisions with Infiniti system and Ozil handpiece.
Average ages for TCI (22 eyes) and STI (64 eyes) are 72.50±8.46 and 73.63±9.95 (p=0.637). Preoperative CSA are 0.36±0.28 and 0.40±0.21μm (p=0.457) respectively. 3 month post-operative CSA are 0.44±0.17 and 0.40±0.18μm (p=0.205). The change of CSA are 0.08±0.36 and 0.00±0.14μm (p=0.328).
For phacoemulsification combined with foldable IOL implantation, STI has no effect on CSA, but TCI might increase post-operative CSA.
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