LaserVision Refractive Audit

1
LaserVision Refractive Audit

• Mr John Fenton FRCSI

2
Refractive audit

• 1160 consecutive procedures in 14 months
• 300 lasek
• 816 lasik
• 85 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 acuity
• lt 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_at_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 likely
• Lasik flap complications (decentered, thin) 6
  eyes require additional enhancement
• Epithelial ingrowth requiring flap lift and
  debridement 4 eyes
• 2 eyes lost one line of best corrected acuity
• 14 eyes gained one or more lines of best acuity