Figure 1

Measurement of optical coherence tomography parameters in macular hole using Spectralis. (a) Near-infrared images of Spectralis optical coherence tomography were used to measure the retinal distance between the temporal margin of the optic disc and the intersections or bifurcations of retinal vessels. Four intersections or bifurcations of retinal blood vessels in the temporal, nasal, superior and inferior the Early Treatment Diabetic Retinopathy Study subfields were selected. (b) Retinal distances at 6 months postoperatively were measured with the same methods. (c) In horizontal scan images, the horizontal minimum and basal diameters of the MH were measured. Inner nuclear layer (INL) and outer retinal layer (OR) thicknesses were measured 1000 μm away from the center of MH temporally and nasally. (d) In vertical scan images, the vertical minimum and basal diameters of MH were measured. The INL and OR thicknesses were measured with as was done for horizontal images. The right side of the image is superior retina, and the left is inferior. (e) Retinal layer thicknesses in the horizontal scan image at 1 month postoperatively. (f) Retinal layer thicknesses in the superior and inferior sectors in the vertical scan image at 6 months postoperatively.