Table 1.

Gonio scratch study synopsis

Purpose	To compare the efficacy and safety of gonio scratch surgery
Patient eligibility
Inclusion criteria	≥20 years of age
	Patients who are scheduled to undergo glaucoma surgery
	Patients who can complete outpatient visits within 1 year after the surgery
	Written informed consent
Exclusion criteria	Pregnant or nursing women
	Patients who underwent an intraocular surgery within the previous 6 months
	Patients who cannot measure intraocular pressure with a Goldmann applanation tonometer
	Neovascular glaucoma patients
	Patients with an intraorbital tumor behind the eye, thyroid eye disease, Sturge–Weber syndrome, or other diseases that increase superior scleral venous pressure
	Patients who are allergic to nitinol
	Patients recognized by the physician as inappropriate for this study
Follow-up examination	1 day, 1 week, 1 month, 3 months, 6 months, and 1 year after surgery
Outcome measures	Intraocular pressure
	Surgical time
	Number of glaucoma medications
	Visual acuity
	Visual fields
Enrollment	80 eyes
Study centers and committees	Four clinical eye centers:
	Hiroshima University Hospital
	Miyoshi Eye Clinic
	Yokoyama Retina Clinic
	Kusatsu Eye Clinic