PIMS (Positioning In Macular hole Surgery) trial – a multicentre interventional comparative randomised controlled clinical trial comparing face-down positioning, with an inactive face-forward position on the outcome of surgery for large macular holes: study protocol for a randomised controlled trial

Table 1 Schedule of assessments

Assessment	Preoperative	Surgery	3 months postoperative
Age	x
Sex	x
Ethnicity	x
Laterality	x
Duration of symptoms	x
BCVA	x		x
Lens status: phakic/pseudophakic	x		x
Informed consent	x
Surgery		x
Randomisation		x
Macular hole diameter on OCT	x
Macular hole status (closed; open flat; open elevated)			x
QoL VFQ-25 questionnaire	x		x
Subject-reported experience of positioning			x
If primary repair of macular hole failed, was second operation performed/planned			x

BCVA best-corrected visual acuity, OCT optical coherence tomography, QoL quality of life, VFQ-25 Visual Functional Questionnaire

ISSN: 1745-6215