I am delighted to share with you my most recent audited outcome data. Please bear in mind that direct comparison of the following data with colleagues' data is inappropriate, due to referral patterns, case mix and personally specialised procedures. For example, some consultants specialise in cataract surgery for patients with advanced glaucoma, where final visual results are likely to be poorer than for healthy eyes.
The following figures are taken from my private practice, where I have personally analysed a consecutive series of patients' results. I have attempted to present them in as honest and as clear a way as possible to aid public understanding. I would be delighted to answer questions on any aspect of these data, should you require further information:
- These data pertain to 65 consecutively analysed cases from 2014.
- 64/65 (98.4%) patients described themselves as at least happy with the outcome of the procedure.
- The one patient who described themself as unhappy had a multifocal lens implanted and acheived vision without glasses of 6/5 and N5 in the same eye (fighter pilot level visual acuity and newspaper share price size print, both without glasses), far exceeding the preoperative level of vision. Following second eye surgery (subsequent to this audit), he was in fact very happy with the overall final outcome.
- The average (median) spectacle-free vision achieved for all eyes (including those with eye disease, such as macular degeneration, glaucoma and lazy eyes) was 6/6 (="20:20 vision", with a range of 6/4 to 6/36).
- The average best-corrected vision (i.e. with the help of a spectacle prescription) achieved for all eyes was 6/5 (=better than "20:20 vision", range 6/4 to 6/18).
- For eyes that were otherwise healthy (i.e. no macular disease etc.), all eyes acheived at least the the driving standard without the need for glasses.
- For eyes receiving a multifocal lens, the average unaided vision achieved was 6/6 and N5 (= "20:20 vision" and reading of share price size print, both without glasses), with a range from 6/4 to 6/9(+4) and N5 to N6
- There were no cases of endophthalmitis, cystoid macular oedema, posterior capsule rupture or vitreous loss.
- Three eyes developed a mild pressure rise due to the routine and necessary use of postoperative steroid eye drops. 6 became intolerant of the eye drops and needed a change in eye drop regimen.
In addition, within my NHS practice, I recently (2013) conducted a retrospective personal audit of 50 consecutive cataract procedures, for which I was the surgeon: 100% of patients described themselves as 'at least happy' with the outcome of surgery. 96% of patients' spectacle prescriptions were within 1.0D of the target prescription.
Within my private practice, my rate of vitreous loss (a complication of cataract surgery) is <0.3%.
These figures compare very favourably with recently published scientific data and national statistics.