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Retinal nerve fiber layer characteristics in patients with spontaneous intracranial hypotension: a retrospective case
Li-Guo Feng1, Ying Chen1, Fei-Fang He2
1Department of Ophthalmology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China.
Objective:
To evaluate changes in retinal nerve fiber layer (RNFL) and macular thicknesses, included ganglion cell-inner plexiform layer (GCIPL) thickness, in patients with spontaneous intracranial hypotension (SIH).
Methods:
This was a retrospective, nonrandom, observational case series study. Comprehensive ophthalmic examinations and systemic examinations were performed. Spectral domain optical coherence tomography angiography scanning was used to measure peripapillary RNFL thickness and macular volume.
Results:
In total, 108 eyes in 54 patients with SIH were evaluated; these were compared with 108 eyes in 54 healthy controls. The mean ages were 38.2 ± 9.4 years (patients with SIH) and 38.9 ± 9.4 years (healthy controls). In both groups, 33 patients were women (61.1%). The peripapillary RNFL and GCIPL were thinner in patients with SIH than in healthy controls (100.08 ± 9.94 µm vs 104.83 ± 8.35 µm and 81.46 ± 5.67 µm vs 85.67 ± 4.57 µm, respectively). Among patients with SIH, the GCIPL was thinner in patients with visual field defects (79.81 ± 5.62 µm vs 82.39 ± 5.12 µm).
Conclusions:
The RNFL and GCIPL were thinner in patients with SIH than in healthy controls. The GCIPL was thinner in eyes with visual field defects among patients with SIH.
