Predictive Modeling of Cycloplegic Refraction Using Non-Cycloplegia Ocular Parameters With Emphasis on Lens-Related Features.

Quadratic function fitting produced solid curves for these data points, showing a highly significant relationship ( r 2 = 0.94 for ACR, r 2 = 0.82 for PCR), expressed in Equations 6 and 7 as follows: (6) A c c D = 0 . 01 × Δ A C R 2 - 1 . 21 × Δ A C R - 0 . 02 (7) A c c D = - 2 . 40 × Δ P C R 2 + 9 . 30 × Δ P C R - 0 . 60 Considering the small change in diopter after cycloplegia (typically less than 1.50 D), Equations 6 and 7 were inverted to obtain the slopes of ACR (| k ACR | ≈ 1.21) and PCR (| k PCR | ≈ 9.30).

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