1. Clinical outcome of thin corneas after laser in situ keratomileusis
Faik Orucov*, MD, Joseph Frucht-Pery, MD, David Landau, MD, Eyal Strassman, MD, Abraham Solomon, MD
*Refractive Surgery Department,
Istanbul Surgery Hospital
Istanbul, Turkey
Hadassah University Hospital, Jerusalem, Israel
Authors have no financial interests in any of the mentioned products or companies

2. PURPOSE
To evaluate the clinical outcome of laser in situ keratomileusis (LASIK) for the treatment of myopia with thin corneas.

3. METHODS SETTING: Hadassah Optimal Laser Center,Jerusalem, Israel
Retrospective study
N: 193 eyes
Preoperative CCT<498 microns
Calculated RST ≤ 250 microm
F/U : at least one year
Exclusion criteria ;
- incomplete documentation
- lost to follow-up

4. RESULTS Patient characteristics & Preoperative data N/%
No of patients /100
Sex Female (%) / 58.5
Male / 41.5
Eye Right (%) / 49.7
Left / 50.3
Type of treatment (%)
Conventional /38.9
Customized /61.1
SE (Mean) ±1.56
Range D
BCVA ±0.09
Range
CCT ±10.32
Range mm
OZ ±0.39 mm
Range mm
Ablation ±15.57
Range
Residual Stromal bed ±12.85
Range
Follow up ±10.36
Range months

5. RESULTS Distribution of preoperative central corneal thickness
CCT ±10.32
Range mm

6. RESULTS Topographic values & The predictability of the procedures
Scattergram showing achieved versus attempted correction.
K ±1.64 D
Range D
K ±1.82
Range
Dk ±0.80
Range
I-S Value ±0.33
Range
Posterior float ±0.009
Range

7. RESULTS Postoperative data. Last visit (~18 months) UCVA 0.91±0.25
Range
SE ±0.48
Range
BCVA ±0.18
Range
Safety index ±0.14
Efficacy index ±0.24
No signs of ectasia

8. CONCLUSION LASIK was safe in patients with thin corneas and myopia.
More studies with longer follow-up are needed to elucidate further the safety of the LASIK in thin corneas.