Table 1

Timing of outcome measurements

BaselinePost randomisation (months)
 Medical historyx
 Humphrey visual field mean deviationxxxx
 Esterman Visual Fieldxx
 LogMAR visual acuityxxxx
 Intraocular pressurexxxx
 Standard clinical examinationxxx
Patient experience
 Patient experience questionsxxxxxxx
Health economics
 Healthcare utilisation (including hospital visits)xxx
 Participant costxxx
 Participant time and travelx
  • *Additional questionnaire undertaken immediately prior to trabeculectomy surgery; discrete choice experiment at 27 months;

  • GUI, Glaucoma Utility Index; HUI-3, Health Utility Index; LogMAR, logarithm of the mean angle of resolution; NEI-VFQ25, National Eye Institute Visual Function Questionnaire (25 items).