Figure 4
![Figure 4](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs40942-015-0001-z/MediaObjects/40942_2015_1_Fig4_HTML.gif)
Boxplot shows mean ganglion cell + inner plexiform layer (GC + IPL) thickness of each study group with macular cube 200×200. Mean CGL + IPL and mean RNFL were thinner in the group with DM with no DR when compared to control (P < 0.05). ANOVA with Bonferroni post test indicated a statistically significant reduction in GCL + IPL in DM with no DR compared to control (P = 0.039).