Clinical outcome of thin corneas after laser in situ keratomileusis

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Presentation transcript:

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

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

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

RESULTS Patient characteristics & Preoperative data N/% No of patients 193/100 Sex Female (%) 113/ 58.5 Male 80/ 41.5 Eye Right (%) 96/ 49.7 Left 97/ 50.3 Type of treatment (%) Conventional 75/38.9 Customized 118/61.1 SE (Mean) -4.03±1.56 Range -0.94-8.25 D BCVA 1.00±0.09 Range 0.50-1.20 CCT 484.83±10.32 Range 455-497 mm OZ 5.6±0.39 mm Range 4.50-7.0 mm Ablation 60.99±15.57 Range 26-96 Residual Stromal bed 264.5±12.85 Range 250-298 Follow up 18.47±10.36 Range 12-72 months

RESULTS Distribution of preoperative central corneal thickness CCT 484.83±10.32 Range 455-497 mm

RESULTS Topographic values & The predictability of the procedures Scattergram showing achieved versus attempted correction. K1 44.88±1.64 D Range 41.0-49.0 D K2 43.94±1.82 Range 39.30-47.73 Dk 0.91±0.80 Range 0.0-5.40 I-S Value 0.84±0.33 Range 0.40-1.70 Posterior float 0.032±0.009 Range 0.01-0.060

RESULTS Postoperative data. Last visit (~18 months) UCVA 0.91±0.25 Range 0.20-1.50 SE -0.27±0.48 Range -1.88+0.50 BCVA 1.03±0.18 Range 0.60-1.50 Safety index 1.04±0.14 Efficacy index 0.92±0.24 No signs of ectasia

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.