Research on refractive power calculation formula of intraocular lens based on the principle of double thick lens imaging

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A new equation for intraocular lens (IOL) refractive power calculation was developed using Gaussian optics and thick-lens imaging techniques.
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The study included 54 patients with age-related cataracts who underwent phacoemulsification and IOL implantation at Ningbo Traditional Chinese Medicine Hospital.
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The new IOL power calculation formula showed a median predictive error of 0.060 D, significantly lower than established formulas like Barrett Universal II and Hoffer Q.
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The new equation achieved the highest percentage of eyes within ±0.25 D at 43.3%, demonstrating superior predictive accuracy compared to other formulas.
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This innovative IOL computation method enhances systematic bias management and offers a promising approach for individualized IOL power calculations.

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