망막두께분석기와 광간섭단층촬영기를 이용한 정상 한국인의 황반두께에 대한 비교분석

Assessment of Foveal Thickness in Normal Korean using Retinal Thickness Analyzer and Optical Coherence Tomography

Purpose: To assess and compare the reliability and reproducibility of foveal thickness measurements by RTA and OCT3 in normal Korean subjects. In addition, we ultimately plan to establish normal ranges for foveal thickness in Korean adults of various ages and sexes using RTA and OCT3. Methods: Foveal average thickness and foveolar thickness were obtained in 104 eyes of 104 normal subjects using RTA and OCT3. Results: Coefficient values for macular thickness using RTA and OCT3 were lower than 4%, indicating that both RTA and OCT3 provided reliable measurements. Average foveal thicknesses were 200.7±15.0 ㎛ and 190.5±13.9 ㎛ for RTA and OCT3, respectively; foveolar thicknesses were 143.3±11.3 ㎛ and 149.7±11.7 ㎛, respectively. Average foveal thickness was significantly lower in the 60- to 79-year-old group. However gender did not have a significant effect on foveal thickness. OCT3 and RTA measurements of average foveal thickness were strongly correlated (Pearson`s correlation coefficient=0.876), as were the measurements of the foveolar thickness (Pearson`s correlation coefficient=0.809). Conclusions: In conclusion, there was excellent agreement between RTA and OCT3 measurements. Both techniques can be used as a quantitative and objective tool for documenting changes in foveal thickness.