Abstract
BackgroundReducing refractive error has always been a tricky problem. The aim of this study was to verify the correlation between binocular refractive error (RE) after sequential cataract surgery and explore an individualized calculation method of intraocular lens (IOL) for the second eye.MethodsThis was a prospective study. One hundred eighty-eight affected eyes in 94 age-related cataract patients who underwent sequential cataract surgery in the Department of Ophthalmology, Tangdu Hospital, China, were recruited. Complete case data were included for a correlation analysis of binocular RE. Data obtained in patients with RE values greater than 0.50 diopters (D) in the first eye were extracted and the patients divided randomly into two groups: Group A and B. In the adjustment group, group A, we modified the IOL power for the second eyes as 50% of the RE of the first eye. In group B, the control group, there was no modification. The mean absolute refractive error (MARE) values of the second eyes were evaluated one month after surgery.ResultsThe correlation coefficient of the binocular RE after sequential cataract surgery was 0.760 (P < 0.001). After the IOL power of the second eyes was adjusted, the MARE of the second eyes was 0.57 ± 0.41 D, while the MARE of the first eyes was 1.18 ± 0.85 D, and the difference was statistically significant (P < 0.001).ConclusionsBinocular REs were positively correlated after sequential cataract surgery. The RE of the second eye can be reduced by adjusting the IOL power based on 50% of the postoperative RE of the first eye.
Highlights
Reducing refractive error has always been a tricky problem
It is imperative to use an intraocular lens (IOL) calculation method for the second eye due to the patients’ need for clear vision and because some problems related to poor visual recovery caused by the refractive error (RE) of the first eye can be prevented by calculating the IOL power using better test parameters
The binocular axial length (AL) were highly correlated when the IOL power was adjusted for the second eye (r = 0.984, P < 0.001) (Fig. 4)
Summary
Reducing refractive error has always been a tricky problem. The aim of this study was to verify the correlation between binocular refractive error (RE) after sequential cataract surgery and explore an individualized calculation method of intraocular lens (IOL) for the second eye. It is imperative to use an IOL calculation method for the second eye due to the patients’ need for clear vision and because some problems related to poor visual recovery caused by the RE of the first eye can be prevented by calculating the IOL power using better test parameters. Whether this methodology can be widely used in patients with different ALs in our country is still unclear
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