AMD	Age-related macular degeneration
BCVA	Best-corrected visual acuity
CDU	Color Doppler ultrasonography
CNG	Cyclic nucleotide-gated (channel)
COAG	Chronic open-angle glaucoma
CT	Clinical trial
CYP	Cytochrome P450
ED	Erectile dysfunction
ERG	Electroretinogram
cGMP	Cyclic guanosine monophosphate
FM	Farnsworth-Munsell (test)
GC	Guanylyl cyclase
GCAP	Guanylyl cyclase-activating protein
HVF	Humphrey visual field (test)
IS	Ischemic stroke
IOP	Intraocular pressure
NAION	Nonarteritic anterior ischemic optic neuropathy
NCKX	Potassium-dependent sodium-calcium exchanger
NO	Nitric oxide
PAH	Pulmonary arterial hypertension
PDE	Phosphodiesterase
PKG	Protein kinase G