Fig. 1From: Dual effect of the Valsalva maneuver on autonomic nervous system activity, intraocular pressure, Schlemm’s canal, and iridocorneal angle morphologyAnterior segment optical coherence tomography image. Anterior segment optical coherence tomography image showing the measurements of ACA, AOD500, ARA500, TIA500, TISA500, ACD, and pupil diameter (PD)Back to article page