1. LaserVision Refractive Audit Mr John Fenton FRCSI

2. Refractive audit 1160 consecutive procedures in 14 months1160 consecutive procedures in 14 months 300 lasek300 lasek 816 lasik816 lasik 85 % choose wavefront guided treatment (of benefit if high refractive errors,night glare, astigmatism, large pupils) –15% standard treatment – equal outcomes for low errors85 % choose wavefront guided treatment (of benefit if high refractive errors,night glare, astigmatism, large pupils) –15% standard treatment – equal outcomes for low errors Post-op 96% binocular distance acuityPost-op 96% binocular distance acuity <= 6/6 unaided <= 6/6 unaided

3. Audits: All patients

4. Age Distribution

5. Audits; All Surgery types- All patient types

6. Audits: All surgery types-Myopes

7. Audits: All Surgery types- Hyperopes

8. number of eyes pre OP: 1160 age@OP average 35 years (from 18 to 66) eye left 49.9% or 579 eyes right 50.1% or 581 eyes pre SR equiv: mean -2.53 D ± 2.58 D (from -9.50 to 6.38) pre SR sph: mean -2.11 D ± 2.66 D (from -9.25 to 7.00) pre SR cyl: mean -0.86 D ± 1.01 D (from -7.25 to 0.00) number of eyes 1 m: 848 (follow up rate 73.1%) post SR equiv: mean -0.21 D ± 0.44 D (from -2.50 to 1.63) post SR sph: mean -0.10 D ± 0.45 D (from -2.50 to 2.25) post SR cyl: mean -0.22 D ± 0.36 D (from -2.75 to 0.00)

9. All LASEK cases efficacy after 1 and 4 months

10. Audits Custom LASEK Myopes

11. Audits: Custom LASIK Myopes

12. Complications Undercorrection (+/- 1D) or overcorrection of refractive error require enhancement – lasek enhancement rate of 4% - high refractive errors more likelyUndercorrection (+/- 1D) or overcorrection of refractive error require enhancement – lasek enhancement rate of 4% - high refractive errors more likely Lasik flap complications (decentered, thin) 6 eyes require additional enhancementLasik flap complications (decentered, thin) 6 eyes require additional enhancement Epithelial ingrowth requiring flap lift and debridement 4 eyesEpithelial ingrowth requiring flap lift and debridement 4 eyes 2 eyes lost one line of best corrected acuity2 eyes lost one line of best corrected acuity 14 eyes gained one or more lines of best acuity14 eyes gained one or more lines of best acuity