论文部分内容阅读
To assess the usefulness of optical coherence tomography (OCT) for better diff erential diagnosis of macular pseudoholes (MPH) and lamellar macular holes (LMH) . Observational case series. setting: Institutional practice. patients: We revie wed the files of 71 eyes of 70 consecutive patients who were diagnosed as having a pseudohole or lamellar hole on OCT examination. All patients referred for sus pected pseudohole or lamellar hole on biomicroscopy were evaluated by OCT. main outcome measures: Each eye underwent six radial 3 mm OCT scans centered on the macula, one 6 mm vertical and one 6 mm horizontal scan. Retinal thick ness was measured at the foveal center and 750 μm from the center, vertically, and horizontally. The diameter of the macular contour was also measured on verti cal and horizontal scans. In 40 cases, OCT showed a macular profile characterist ic of MPH: a steepened foveal pit combined with thickened foveal edges and a sma ll foveal pit diameter. Central foveal thickness was normal or slightly increase d (167 ±.42 μm). Mean perifoveal thickness was greater than normal (363 ±.65 μm). In 29 other cases corresponding to LMH, OCT showed a profile characterized by a thin irregular foveal floor, split foveal edges, and near normal perifove al retinal thickness. Central foveolar thickness was thinner than normal (72 ±. 19 μm). Mean perifoveal thickness was near normal (283 ±36). Optical coherence tomography did not allow the classification of the remaining two cases. Optical coherence tomography is very useful in distinguishing MPH attributable to epire tinal membrane contraction from LMH because of partial opening of a macular cyst .
To assess the usefulness of optical coherence tomography (OCT) for better diff erential diagnosis of macular pseudoholes (MPH) and lamellar macular holes (LMH). Observational case series. Setting: Institutional practice. Patients: We revie wed the files of 71 eyes of 70 consecutive patients who were diagnosed as having a pseudohole or lamellar hole on OCT examination. All patients referred for suspected pseudohole or lamellar hole on biomicroscopy were evaluated by OCT. Main outcome measures: Each eye underwent six radial 3 mm OCT scans centered on the The macula, one 6 mm vertical and one 6 mm horizontal scan. Retinal thick ness was measured at the foveal center and 750 μm from the center, vertically, and horizontally. The diameter of the macular contour was also measured on verti cal and horizontal scans. In 40 cases, OCT showed a macular profile characterist ic of MPH: a steepened foveal pit combined with thickened foveal edges and a sma ll foveal pit diameter. Central foveal thickne Mean perifoveal thickness was greater than normal (363 ± .65 μm). In 29 other cases corresponding to LMH, OCT showed a profile characterized by a thin irregular foveal floor, Mean foveolar thickness was thinner than normal (72 ±. 19 μm). Mean perifoveal thickness was near normal (283 ± 36). Optical coherence tomography did not allow the classification of the remaining Two cases. Optical coherence tomography is very useful in distinguishing MPH attributable to epire tinal membrane contraction from LMH because of partial opening of a macular cyst.