Astigmatism Correction With High Water-Content Hydrophobic Acrylic Toric Intraocular Lenses And The Influencing Factors
Published 2024 - 42nd Congress of the ESCRS
Reference: PP10.16 | Type: Poster | DOI: 10.82333/3h8n-kw73
Authors: Yosai Mori* 1 , Eriko Kanaya 1 , Miyuki Ogata 1 , Keiichiro Minami 1 , Kazutaka Kamiya 2 , Kazunori Miyata 1
1Miyata Eye Hospital,Miyakonojo,Japan, 2Kitasato University, School of Allied Health Sciences, Visual Physiology,Sagamihara,Japan
Purpose
To evaluate the effect of astigmatism correction of high water-content hydrophobic acrylic intraocular lens (IOL) prospectively. The influence of misalignment, tilt and decentration of IOL, and posterior corneal astigmatism was also examined.
Setting
Miyata Eye Hospital, Miyazaki, Japan.
Methods
In forty-seven eyes of 47 cataract subjects with corneal astigmatism, toric IOLs, CNW0T (Alcon), were implanted through superior corneoscleral incisions. The IOL was aligned using a surgical guidance system (Verion, Alcon). At 3 months postoperatively, uncorrected distance visual acuity (UDVA) and refractive cylinder were examined. Axis position, decentration, and tilt of the IOL and posterior corneal astigmatism were measured using anterior-segment OCT (CASIA2, Tomey). The association of misalignment, decentration, tilt, and posterior corneal astigmatism on the refractive cylinder was examined.
Results
The mean preoperative kerarometric astigmatism was 2.27 ± 0.76 D. Implanted toric models were T3(4 eyes), T4(16 eyes), T5(14 eyes), T6(5 eyes), T7(7 eyes), and T8(1 eye), and the mean postoperative UDVA was 0.05 ± 0.16 logMAR with no difference between T3-7 (P=0.09). The mean refractive cylinder was 0.69 ± 0.52 D and there were no associations with misalignment, decentration, tilt, and posterior corneal astigmatism (P>0.50)
Conclusions
This high water-content hydrophobic IOL effectively corrected corneal astigmatism. and there was no influence due to misalignment, decentration, tilt, and posterior corneal astigmatism in astigmatism correction.