Abstract:
Purpose:We assessed the ability to detect preperimetric glaucoma (PPG) based on asymmetry in the thickness of the macular inner retinal layers measured by spectral-domain optical coherence tomography. Methods:We studied 45 normal eyes and 50 PPG eyes retrospectively. Three-dimensional optical coherence tomography macular area scans were used to obtain the thickness of the retinal nerve fiber layer (RNFL), ganglion cell layer/inner plexiform layer (GCL/IPL), and ganglion cell complex (GCC). We calculated the thickness differences between the upper and lower macular hemispheres for the corresponding superpixels, then evaluated the mean absolute value of the thickness differences and the number of superpixels in which the thickness difference was greater than X µm, where X is an integer number from 1 to 10. Areas under the receiver operating characteristic curves (AUCs) for their PPG diagnostic performances were compared to the average thickness measurements of the total and hemiretinal sectors. X was determined at the maximum AUC value. Results:The AUC for the mean absolute value of the difference in GCL/IPL thickness (0.923) was higher than the difference in RNFL and GCC thickness (0.710 and 0.905, respectively). The AUC for the number of superpixels in which the GCL/IPL thickness difference was greater than 8 µm (X = 8) was 0.914. The ability to diagnose PPG using these GCL/IPL parameters was statistically higher than for total or superior and inferior hemiretinal GCL/IPL thicknesses. Conclusions:Asymmetry in the thickness of the GCL/IPL shows good PPG diagnostic performance. Translational Relevance:This approach would be useful in the early detection of glaucoma.
journal_name
Transl Vis Sci Technoljournal_title
Translational vision science & technologyauthors
Takemoto D,Higashide T,Ohkubo S,Udagawa S,Sugiyama Kdoi
10.1167/tvst.9.5.8subject
Has Abstractpub_date
2020-04-15 00:00:00pages
8issue
5issn
2164-2591pii
TVST-19-2147journal_volume
9pub_type
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