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Influence of angle kappa and angle alpha on visual quality after implantation of multifocal intraocular lenses.
J Cataract Refract Surg 2019; 45(9):1258-1264JC

Abstract

PURPOSE

To assess the influence of angle kappa (κ) and angle alpha (α) on visual quality after multifocal intraocular lens (IOL) implantation.

SETTING

Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China.

DESIGN

Prospective case series.

METHODS

Patients with cataract had phacoemulsification with TECNIS Symfony IOL implantation. The preoperative angle κ and angle α were measured using the iTrace device. Distance, intermediate, and near visual acuities were recorded 3 months postoperatively. The Optical Quality Analyzing System was used to measure the objective scatter index (OSI), modulation transfer function (MTF) cutoff frequency, and Strehl ratio. A patient questionnaire was also administered.

RESULTS

The study comprised 29 patients (57 eyes). Monocularly, the mean postoperative logarithm of the minimum angle of resolution (logMAR) uncorrected distance, intermediate, and near visual acuities were 0.03 ± 0.09 (SD), 0.05 ± 0.11, and 0.11 ± 0.09, respectively. The mean postoperative logMAR corrected distance, distance-corrected intermediate, and distance-corrected near visual acuities were -0.01 ± 0.05, 0.04 ± 0.09, and 0.11 ± 0.08, respectively. The mean OSI, MTF cutoff, and Strehl ratio were 1.27 ± 0.84, 32.03 ± 10.80 cycles per degree, and 0.17 ± 0.05, respectively. The OSI (r = 0.398, P = .005), MTF (r = -0.437, P = .002), and Strehl ratio (r = -0.419, P = .003) values were significantly correlated with angle κ. There was no correlation with angle α.

CONCLUSIONS

Angle κ affected the objective visual quality multifocal after IOL implantation. The decision to implant a multifocal IOL should be carefully considered for patients with a large angle κ.

Authors+Show Affiliations

School of Optometry and Ophthalmology, Wenzhou Medical University, and the Key Laboratory of Vision Science, Wenzhou, Zhejiang, China.School of Optometry and Ophthalmology, Wenzhou Medical University, and the Key Laboratory of Vision Science, Wenzhou, Zhejiang, China.School of Optometry and Ophthalmology, Wenzhou Medical University, and the Key Laboratory of Vision Science, Wenzhou, Zhejiang, China.School of Optometry and Ophthalmology, Wenzhou Medical University, and the Key Laboratory of Vision Science, Wenzhou, Zhejiang, China.School of Optometry and Ophthalmology, Wenzhou Medical University, and the Key Laboratory of Vision Science, Wenzhou, Zhejiang, China.School of Optometry and Ophthalmology, Wenzhou Medical University, and the Key Laboratory of Vision Science, Wenzhou, Zhejiang, China.School of Optometry and Ophthalmology, Wenzhou Medical University, and the Key Laboratory of Vision Science, Wenzhou, Zhejiang, China.School of Optometry and Ophthalmology, Wenzhou Medical University, and the Key Laboratory of Vision Science, Wenzhou, Zhejiang, China.School of Optometry and Ophthalmology, Wenzhou Medical University, and the Key Laboratory of Vision Science, Wenzhou, Zhejiang, China.School of Optometry and Ophthalmology, Wenzhou Medical University, and the Key Laboratory of Vision Science, Wenzhou, Zhejiang, China. Electronic address: zyehzeye@126.com.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31326223

Citation

Fu, Yana, et al. "Influence of Angle Kappa and Angle Alpha On Visual Quality After Implantation of Multifocal Intraocular Lenses." Journal of Cataract and Refractive Surgery, vol. 45, no. 9, 2019, pp. 1258-1264.
Fu Y, Kou J, Chen D, et al. Influence of angle kappa and angle alpha on visual quality after implantation of multifocal intraocular lenses. J Cataract Refract Surg. 2019;45(9):1258-1264.
Fu, Y., Kou, J., Chen, D., Wang, D., Zhao, Y., Hu, M., ... Zhao, Y. E. (2019). Influence of angle kappa and angle alpha on visual quality after implantation of multifocal intraocular lenses. Journal of Cataract and Refractive Surgery, 45(9), pp. 1258-1264. doi:10.1016/j.jcrs.2019.04.003.
Fu Y, et al. Influence of Angle Kappa and Angle Alpha On Visual Quality After Implantation of Multifocal Intraocular Lenses. J Cataract Refract Surg. 2019;45(9):1258-1264. PubMed PMID: 31326223.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Influence of angle kappa and angle alpha on visual quality after implantation of multifocal intraocular lenses. AU - Fu,Yana, AU - Kou,Jiaojiao, AU - Chen,Dongjie, AU - Wang,Dandan, AU - Zhao,Yinyin, AU - Hu,Man, AU - Lin,Xiaolei, AU - Dai,Qi, AU - Li,Junhua, AU - Zhao,Yun-E, Y1 - 2019/07/17/ PY - 2019/01/15/received PY - 2019/03/27/revised PY - 2019/04/01/accepted PY - 2019/7/22/pubmed PY - 2019/7/22/medline PY - 2019/7/22/entrez SP - 1258 EP - 1264 JF - Journal of cataract and refractive surgery JO - J Cataract Refract Surg VL - 45 IS - 9 N2 - PURPOSE: To assess the influence of angle kappa (κ) and angle alpha (α) on visual quality after multifocal intraocular lens (IOL) implantation. SETTING: Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China. DESIGN: Prospective case series. METHODS: Patients with cataract had phacoemulsification with TECNIS Symfony IOL implantation. The preoperative angle κ and angle α were measured using the iTrace device. Distance, intermediate, and near visual acuities were recorded 3 months postoperatively. The Optical Quality Analyzing System was used to measure the objective scatter index (OSI), modulation transfer function (MTF) cutoff frequency, and Strehl ratio. A patient questionnaire was also administered. RESULTS: The study comprised 29 patients (57 eyes). Monocularly, the mean postoperative logarithm of the minimum angle of resolution (logMAR) uncorrected distance, intermediate, and near visual acuities were 0.03 ± 0.09 (SD), 0.05 ± 0.11, and 0.11 ± 0.09, respectively. The mean postoperative logMAR corrected distance, distance-corrected intermediate, and distance-corrected near visual acuities were -0.01 ± 0.05, 0.04 ± 0.09, and 0.11 ± 0.08, respectively. The mean OSI, MTF cutoff, and Strehl ratio were 1.27 ± 0.84, 32.03 ± 10.80 cycles per degree, and 0.17 ± 0.05, respectively. The OSI (r = 0.398, P = .005), MTF (r = -0.437, P = .002), and Strehl ratio (r = -0.419, P = .003) values were significantly correlated with angle κ. There was no correlation with angle α. CONCLUSIONS: Angle κ affected the objective visual quality multifocal after IOL implantation. The decision to implant a multifocal IOL should be carefully considered for patients with a large angle κ. SN - 1873-4502 UR - https://www.unboundmedicine.com/medline/citation/31326223/Influence_of_angle_kappa_and_angle_alpha_on_visual_quality_after_implantation_of_multifocal_intraocular_lenses L2 - https://linkinghub.elsevier.com/retrieve/pii/S0886-3350(19)30272-X DB - PRIME DP - Unbound Medicine ER -