Reliability of Optical Devices in Terms of Measurements of Corneal Parameters in Cross Linked Keratoconic Eyes: Cross-Sectional Study

Objective: To determine the reliability and agreement of different optical devices in terms keratometry pachymetry measurements cross-linked (CXL) keratoconic eyes. Material Methods: Thirty-eight CXL-treated eyes were evaluated. Three repeated performed with Topcon KR-1 autorefractokeratometry, Sirius topography, Nidek AL-scan biometry RTVue anterior segment coherence tomography (AS-OCT). The compared keratometric values. Limits (LoA) between detected using Bland-Altman analysis. Intra-examiner was obtained intraclass correlation coefficient (ICC). Results: While mean central corneal thickness (CCT) minimum (MCT) measured AS-OCT 456.37±41.52 μm 431.89±43.37 μm, respectively, these values 432.40±48.97 415.67±47.69 topography (p0.97). When astigmatism measurements, there a significant difference among except autorefractokeratometry (p0.99). Conclusion: Pachymetry can be independently each device excellent However, we consider that made cannot used interchangeably