Abstract

Volume.123 Number.1

Original article : Clinical science

Dysphotopsia Development Factors after Cataract Surgery
Akihito Igarashi1,2, Kimiya Shimizu1,2, Syuntaro Tsunehiro1, Manabu Koshimizu1, Sayaka Kato1, Misae Ito1,2, Takushi Kawamorita3
1 Sanno Hospital Eye Center
2 International University of Health and Welfare
3 Kitasato University, School of Allied Health Science, Orthoptics and Visual Science

Purpose: Symptoms such as glare, halo, intraocular lens (IOL) edge glare, and dark shadow are termed dysphotopsia, and these appear to be caused by IOLs. We investigated the incidence and risk factors of dysphotopsia after cataract surgery by multivariate analysis.
Method: Subjects comprised patients who underwent phacoemulsification and aspiration+IOL surgery and achieved corrected visual acuity higher than 1.0 from August 2017 to February 2018 at Sanno Hospital. We examined 199 eyes of 199 patients (male: 101 eyes, female: 98 eyes). In the postoperative questionnaire, symptoms of glare and halo were categorized as positive dysphotopsia and seeing a crescent-shaped shadow around the IOL edge as negative dysphotopsia. We used multivariate analysis with dysphotopsia as the dependent variable and age, sex, IOL material (silicone or acrylic), IOL power, corneal refractive power, corneal astigmatism degree, axial length, and pupil diameter as explanatory variables.
Results: After surgery, 25.6% of patients complained of dysphotopsia (positive, 23.6%; negative, 3.5%). Age (r=0.357, p=0.039) and IOL material (r=-0.411, p=0.018) were found to be significant factors in the logistic regression analysis. Regarding the IOL material used, dysphotopsia was reported by 17.5% of patients for silicone (positive, 16.7%; negative, 0.9%) and by 36.5% for acrylic (positive, 32.9%; negative, 7.1%).
Conclusion: For cases of early-onset cataract surgery, it is necessary to consider the IOL material used as a factor potentially affecting dysphotopsia.
Nippon Ganka Gakkai Zasshi (J Jpn Ophthalmol Soc) 123: 32-38, 2019.

Key words
Positive dysphotopsia, Negative dysphotopsia, Intraocular lens, Acrylic, Silicone
Reprint requests to
Akihito Igarashi, M.D. Sanno Hospital Eye Center. 8-10-16 Akasaka, Minato-ku, Tokyo 107-0052, Japan