ArticleOphthalmology and therapy2026
Capsular Tension Ring Implantation Improves Intraocular Lens Power Prediction Accuracy in Cataract with Retinitis Pigmentosa.
Article in Ophthalmology and therapy, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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Who cites it
1 citing paper in PubMed.
- Intraocular Lens Positional Instability and Refractive Prediction Error after Cataract Surgery in Eyes with Retinitis Pigmentosa: A Comparative Study.Korean journal of ophthalmology : KJO · 2026Article
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10 authors.
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Abstract
introductionPatients with retinitis pigmentosa (RP) frequently exhibit zonular weakness, which poses challenges for intraocular lens (IOL) stability and refractive prediction. This study aimed to evaluate the impact of capsular tension ring (CTR) implantation on the predictive accuracy of 12 IOL power calculation formulas in patients with RP receiving cataract surgery.
methodsWe conducted a retrospective cohort study where the predictive accuracy of 12 IOL formulas was assessed using refractive prediction error (PE), mean absolute error (MAE), root-mean-square absolute error (RMSAE), and the percentage of eyes achieving target refraction within ± 0.25 D to ± 1.00 D. These metrics were compared between eyes with (n = 23) and without (n = 30) CTR implantation. The influence of lens thickness (LT) on formula accuracy was also evaluated.
resultsIn the overall cohort of 53 eyes from 38 patients with RP, the Barrett Universal II (BUII) formula yielded the lowest numerical MAE (0.45 D) and RMSAE (0.56 D), though none of the formulas were statistically superior in RMSAE. In the CTR group, significantly lower MAE was observed for Cooke K6 (P = 0.024), Kane (P = 0.016), Emmetropia Verifying Optical (EVO) 2.0 (P = 0.040), and PEARL-DGS (P = 0.021) compared to the non-CTR group. The CTR group also exhibited a significantly higher percentage of eyes within ± 0.50 D (P = 0.016), ± 0.75 D (P < 0.001), and ± 1.00 D (P < 0.001) of target refraction. Increasing LT correlated with a hyperopic shift for all formulas; however, BUII demonstrated relatively stable MAE across LT quartiles.
conclusionsImplantation of a CTR was associated with significantly improved predictive accuracy for several modern IOL formulas in patients with RP. The BUII formula showed the highest overall predictive accuracy.
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