Reply to: Central corneal thickness measurement with Cirrus HD-OCT and Topcon SP-3000P.

Central corneal thickness measurement with Cirrus HD-OCT and Topcon SP-3000P.

Assessment of artifacts and reproducibility across spectral- and time-domain optical coherence tomography devices.

PURPOSE To report the frequency of optical coherence tomography (OCT) scan artifacts and to compare macular thickness measurements, interscan reproducibility, and interdevice agreeability across 3 spectral-domain (SD) OCT (also known as Fourier domain; Cirrus HD-OCT, RTVue-100, and Topcon 3D-OCT 1000) devices and 1 time-domain (TD) OCT (Stratus OCT) device. DESIGN Prospective, noncomparative,...

Comparison of the precision of the Topcon SP-3000P specular microscope and an ultrasound pachymeter

AIM To compare the precision of the Topcon SP-3000P noncontact specular microscope (NCSM) and the DGH 500 ultrasound pachymeter (USP). METHODS Triplicate measurements of central corneal thickness (CCT) for 100 eyes were taken with an NCSM and a USP in 2 visits separated by 1 week. Repeatability was assessed by computing the differences between all 3 readings from each subject. Coefficients of...

Comparison of Central Macular Thickness Measured by Three OCT Models and Study of Interoperator Variability

PURPOSE To compare central macular thickness (CMT) measurement on healthy patient using 3 different OCT devices by two operators. METHODS Prospective, monocentricstudy. Right eye's central macular thickness (CMT) of 30 healthy patients has been measured three times using a time-domain (TD) OCT (Stratus OCT, Carl Zeiss Meditec, Dublin, Ca) and two spectral domain (SD) OCTs (Cirrus HD-OCT, Carl...

Repeatability and Agreement of Central Corneal Thickness and Keratometry Measurements between Four Different Devices

Background. To estimate repeatability and comparability of central corneal thickness (CCT) and keratometry measurements obtained by four different devices in healthy eyes. Methods. Fifty-five healthy eyes from 55 volunteers were enrolled in this study. CCT (IOLMaster 700, Pentacam HR, and Cirrus HD-OCT) and keratometry readings (IOLMaster 700, Pentacam HR, and iDesign) were measured. For statis...