Table 2.

Baseline comparison between the two groups

	SDD		NDR
	No	%	No	%
Total	188		174
Males	67	36	70	40
Females	121	64	104	60
Mean age	76		75
Median age	78		75
Age range	43–95		37–92
First eye surgery	107	57	103	59
Second eye surgery	81	43	71	41
Anaesthetic
Topical	7	4	3	2
Peribulbar	149	79	136	78
General	32	17	35	20
Surgeon
Consultant	56	30	42	24
Middle grade	132	70	130	75
Senior house officer	0	0	2	1
Co-existing pathology
Total	69	37	60	34
Macular pathology	44	23	38	22
Glaucoma	14	7	15	9
Ocular hypertension	2	1	1	1
Optic neuropathy	2	1	2	1
Amblyopia	1	1	3	2
Uveitis	3	2	4	2
Previous intraocular surgery	11	6	15	9
Other	11	6	6	3
Preoperative Snellen visual acuities
6/12 or better	120	64	115	66
6/18–6/60	55	29	47	27
Worse than 6/60	13	7	12	7
Median follow up (days)	125		125
Range of follow up (days)	57–311		62–276

Ocular pathology definitions: macular pathology ncludes diabetic maculopathy, age related macular degeneration, epiretinal membrane, macular hole, myopic maculopathy; glaucoma: documented clinical diagnosis; ocular hypertension: raised IOP without disc changes or field defect; optic neuropathy: optic nerve damage resulting in loss of VA, field defect, altered pupil reflexes (RAPD) or colour vision impairment; amblyopia: as stated in patient notes; uveitis: previous documented episode of anterior uveitis; previous intraocular surgery: includes laser trabeculoplasty, trabeculectomy, corneal graft, retinal detachment repair and vitrectomy; other: other vision impairing conditions not defined above.