Contact Admin. To investigate whether preoperative corneal topographic and biomechanical parameters CTBPs predict postoperative residual refractive error RRE. Stepwise regression was used for feature selection. Leave-one-cross-validation was used for model evaluation by the area under the receiver operating characteristic curve AUC. From linear regression, more myopic RRE was associated with higher preoperative myopia, intraocular pressure IOP , flattest curvature of anterior cornea AC , and highest concavity deformation HCD , and was associated with lower anterior elevation, anterior asphericity, steepest curvature of AC, and second applanation velocity.
Our findings could be used to customize a refractive nomogram based on individual corneal properties improving outcomes and patient satisfaction. Purchase this article with an account. Young ; Kathryn M. You will receive an email whenever this article is corrected, updated, or cited in the literature. You can manage this and all other alerts in My Account. This feature is available to authenticated users only. Small-incision lenticule extraction SMILE has been developed as a new flap-free technique for corneal refractive surgery.
For example, in LASIK, higher preoperative myopia, residual astigmatism, and older age were identified as risk factors for retreatment. Our model aims to improve the correction precision based on individual corneal properties.
A written informed consent was obtained from all participants before enrollment. This study adheres to the Declaration of Helsinki. The enrollment criteria of patients were detailed as follows: The Corvis ST is a noncontact tonometer that assesses corneal dynamic response to a puff of air using an ultra-high speed Scheimpflug camera. The measurements with signal quality that passed the machine threshold were used for statistical analysis.
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