Diagnostic ability of ganglion cell complex thickness to detect glaucoma in high myopia eyes by Fourier domain optical coherence tomography.

AIM

To evaluate the ability of macular ganglion cell complex (GCC) thickness using Fourier domain optical coherence tomography (FD-OCT) to detect glaucoma in highly myopic eyes.

METHODS

Cross-sectional study. A total of 114 participants, consecutively were enrolled. Macular GCC thickness and peripapillary retinal nerve fiber layer (RNFL) thickness were obtained with RTVue FD-OCT. Receiver operating characteristics curves were constructed for each measurement parameter, and areas under the curves (AUCs) were compared.

RESULTS

Both the average GCC and average RNFL thickness showed negative correlations with axial length (=-0.404, =0.001; =-0.561, <0.001). The largest AUCs from GCC, and RNFL parameters were 0.968 [global loss volume (GLV)], and 0.855 (average RNFL), respectively. GLV was significantly better for detecting high myopic glaucoma than average RNFL (<0.001).

CONCLUSION

Macular GCC thickness has higher diagnostic power than peripapillary RNFL thickness to discriminate glaucoma patients from non-glaucoma subjects in high myopia.