Skip navigation

Please use this identifier to cite or link to this item:
Title: Improving accuracy of corneal power measurement with partial coherence interferometry after corneal refractive surgery using a multivariate polynomial approach
Authors: Lanza, Michele
Koprowski, Robert
Sconocchia, Mario Bifani
Keywords: Artificial intelligence; Corneal power; IOLMaster; Refractive surgery
Issue Date: 2018
Citation: BioMedical Engineering Online, Vol. 17, Iss. 1 (2018), Art. No. 108
Abstract: Background: To improve accuracy of IOLMaster (Carl Zeiss, Jena, Germany) in corneal power measurement after myopic excimer corneal refractive surgery (MECRS) using multivariate polynomial analysis (MPA). Methods: One eye of each of 403 patients (mean age 31.53 ± 8.47 years) was subjected to MECRS for a myopic defect, measured as spherical equivalent, ranging from - 9.50 to - 1 D (mean - 4.55 ± 2.20 D). Each patient underwent a complete eye examination and IOLMaster scan before surgery and at 1, 3 and 6 months follow up. Axial length (AL), flatter keratometry value (K1), steeper keratometry value (K2), mean keratometry value (KM) and anterior chamber depth measured from the corneal endothelium to the anterior surface of the lens (ACD) were used in a MPA to devise a method to improve accuracy of KM measurements. Results: Using AL, K1, K2 and ACD measured after surgery in polynomial degree 2 analysis, mean error of corneal power evaluation after MECRS was + 0.16 ± 0.19 D. Conclusions: MPA was found to be an effective tool in devising a method to improve precision in corneal power evaluation in eyes previously subjected to MECRS, according to our results.
DOI: 10.1186/s12938-018-0542-0
ISSN: 1475-925X
Appears in Collections:Artykuły (WNŚiT)

Files in This Item:
File Description SizeFormat 
Lanza_Improving_accuracy_of_corneal_power_measurement.pdf1,47 MBAdobe PDFView/Open
Show full item record

Uznanie Autorstwa 3.0 Polska Creative Commons License Creative Commons