Comparison of central corneal thickness measurements with standard ultrasonic pachymetry and optical devices
| Autor: | Mustafa Dogan, Elif Ertan |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Adult
Male medicine.medical_specialty Biometry Materials science Corneal Pachymetry genetic structures Intraclass correlation Spectral domain Corneal Diseases Cornea Young Adult 03 medical and health sciences 0302 clinical medicine Optical biometry Optical coherence tomography Ophthalmology medicine Humans Prospective Studies medicine.diagnostic_test Corneal Topography Optical Devices Reproducibility of Results Mean age Repeatability eye diseases Cross-Sectional Studies Healthy individuals 030221 ophthalmology & optometry Female Ultrasonic sensor sense organs 030217 neurology & neurosurgery Optometry |
| Zdroj: | Clinical and Experimental Optometry. 102:126-130 |
| ISSN: | 1444-0938 0816-4622 |
| Popis: | Background To compare the repeatability and agreements of central corneal thickness measurements of healthy individuals obtained by Scheimpflug-Placido topographer (Sirius), anterior segment spectral domain optical coherence tomography (Spectralis) (AS-OCT), optical biometry (AL-Scan) and ultrasonic pachymetry. Methods Sixty-four eyes of 32 subjects with no ocular or systemic diseases were included in this study. Central corneal thickness measurements performed with Sirius, AS-OCT, optical biometry AL-Scan and ultrasonic pachymetry were compared. Bland-Altman analysis was used to demonstrate agreement between methods. Intra-examiner repeatability was assessed by using intraclass correlation co-efficients (ICCs). Results Sixty-four eyes of 32 patients were enrolled (25 male and seven female). The mean age was 23.8 years (range 21-28 years). The mean central corneal thickness was 560.8 ± 37.2 μm, 528.8 ± 32.0 μm, 546.4 ± 33.8 μm, 543.4 ± 35.8 μm for the ultrasonic pachymetry, optical biometry AL-Scan, Sirius and AS-OCT values, respectively. The thickest mean central corneal thickness (560.8 ± 37.2 μm) was obtained from ultrasonic pachymetry. The thinnest mean central corneal thickness (528.8 ± 32.0 μm) was obtained from optical biometry AL-Scan. All four modalities of central corneal thickness measurements correlated closely with each other. Intra-examiner repeatability was excellent for all devices with ICCs > 0.90. Conclusions In conclusion, although measurements obtained by various methods correlate well, the measurements are not directly interchangeable. Between ultrasonic pachymetry and the three optical instruments tested, significant diferences can be seen. Therefore, the same imaging method should be used in corneal thickness follow-ups. |
| Databáze: | OpenAIRE |
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