Material and methods: One eye of 30 patients with PES and one eye of 30 healthy subjects were included in the study. The participants\' macular screening was performed in 9 quadrants by SD-OCT according to the early treatment diabetic retinopathy study (ETDRS). Retinal layers were automatically divided into segments using SD-OCT\'s own software and analyzed separately.

Results: Statistically thinning was observed in the perifoveal nasal quadrant in RNFL (p = 0.035); in the perifoveal nasal (P = 0.041) and inferior quadrants (p = 0.034) in GCL and in the perifoveal nasal quadrant (p = 0.035) in GCC of the PES group when compared to the control group. There was no signifi cant difference between the two groups in the inner plexiform layer (p<0.05).

Conclusion: Although intraocular pressure is normal in patients with PES, retinal ganglion cell damage may develop. The evaluation of RNFL, GCL, and GCC with SD-OCT in patients with PES may help in the early diagnosis of preperimetric glaucomatous damage. Keywords : Pseudoexfoliation syndrome, Retinal nerve fi ber layer, Ganglion cell layer, Ganglion cell complex