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| Effect of Corneal Normal B/FRatio on theAccuracy of Barrett Universal Formula for IOLCalculation |
| Wanmin Wu, Feiyan Chai, Jiewei Liu |
| Department of Second Cataract, Shanxi Eye Hospital, Taiyuan 030000, China |
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Abstract Objective: To investigate the effect of corneal normal back-front radius ratio (B/F ratio) on the accuracy of Barrett Universal formula for calculating the refractive power of intraocular lens (IOL). Methods: This retrospective analysis focused on the clinical data of 63 patients (63 eyes)with cataracts and a normal corneal back-front radius ratio (0.780.05). Conclusions: For cataract patients with corneal normal B/F ratio, the prediction error is negatively correlated with the B/F ratio. The larger the B/F ratio, the more the prediction error drifts toward myopia. Conversely, hyperopic drifts. The regression formula of B/F ratio and prediction error is used to optimize the predicted postoperative SE, which could improve the accuracy of Barrett Universal II formula for calculating IOL.
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Received: 03 May 2022
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| Fund:Research Project of Shanxi Eye Hospital (Q201902) |
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Corresponding Authors:
Jiewei Liu, Department of Second Cataract, Shanxi Eye Hospital, Taiyuan 030000, China (Email: jieweiliu1967@sina.com)
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