Brancato 1991.

Methods	Allocation: randomised Masking: evaluator masked for gonioscopy and tonometry. Follow up: 12 months (7 to 20) ITT analysis: not mentioned (describe one loss of follow up). We used all randomised to analyse failure
Participants	N = 20 participants Diagnosis: OAG (excluded eyes with closed angles, aphakic and pseudophakic, juvenile glaucoma and miopia over 3 diopters) Age: not mentioned Race: not mentioned Sex: not mentioned
Interventions	1. DLT (n =10) 2. ALT (n =10)
Outcomes	Failure: less of 20% IOP reduction or need of changing in medication
Notes
Risk of bias
Bias	Authors' judgement	Support for judgement
Allocation concealment?	Unclear risk	B ‐ Unclear