A Novel Role for Corneal Pachymetry in Planning Cataract Surgery by Determining Changes in Spherical Equivalent Resulting from a Previous LASIK Treatment

Objectives. To provide a metric to differentiate between hyperopic and myopic ablation of prior LASIK treatment based on the corneal pachymetry profile after laser vision correction (LVC). Methods. Pachymetry data were retrospectively recovered from patients who had previous for refractive purposes 2019 2020. Patients with any disorder excluded. Ablation spherical equivalent was predicted central semiperipheral thickness (CPT) ratio, both values provided by using Pentacam user interface software (UI), computed extracted raw data. Results. Data 157 eyes 81 collected, which analysed 73 avoid concurrence measurements in per subject (42% female; mean age 40.9; SD 12.8). The CPT ratio cutoff distinction 0.86 UI Sensitivity specificity 0.7 0.95, respectively. Accuracy increased computation sensitivity 0.87 0.99, There marked linear correlation (R2 = 0.93). Conclusions. cutoffs can correctly classify if cornea previously versus surgery estimate such treatment. This could prove useful accuracy intraocular lens (IOL) calculations no historical their LVC at time cataract planning.