Table 2

Baseline comparison between the two groups

SDDNDR
No%No%
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.
Total188174
Males67367040
Females1216410460
Mean age7675
Median age7875
Age range43–9537–92
First eye surgery1075710359
Second eye surgery81437141
Anaesthetic
Topical7432
Peribulbar1497913678
General32173520
Surgeon
Consultant56304224
Middle grade1327013075
Senior house officer0021
Co-existing pathology
Total69376034
Macular pathology44233822
Glaucoma147159
Ocular hypertension2111
Optic neuropathy2121
Amblyopia1132
Uveitis3242
Previous intraocular surgery116159
Other11663
Preoperative Snellen visual acuities
6/12 or better1206411566
6/18–6/6055294727
Worse than 6/60137127
Median follow up (days)125125
Range of follow up (days)57–31162–276