COMPARISON OF THE TARGET REFRACTIVE VALUE AND THE RESULTING REFRACTIVE VALUE IN PATIENTS UNDERGOING PHACOEMULSIFICATION SURGERY/FAKOEMULSIFIKASYON CERRAHISI YAPILAN HASTALARDA HEDEF REFRAKTIF DEGER ILE SONUC REFRAKTIF DEGERIN KARSILASTIRILMASI

Objective: To evaluate the target refractive value before and after surgery in patients who underwent phacoemulsification surgery. Material and Method: Patients diagnosed with cataracts who underwent surgery between January 2015 and March 2017 in the Department of Ophthalmology in Istanbul University's Faculty of Medicine were accepted in this study. The difference between the target refractive value and the resulting refractive value was recorded as a refractive error. Results: 150 eyes of 107 patients were accepted and used in this study. The SRK-T formula was applied to 100 eyes and the SRK-2 formula were applied to 50 eyes. The mean targeted refractive value was -0.21[+ or -]0.17 D in the SRK-T formula group and -0.22[+ or -]0.29 D in the SRK-2 formula group. The mean resulting refractive value was -0.19[+ or -]0.37 D in the SRK-T formula group and -0.12[+ or -]0.77 D in the SRK-2 formula group. The mean refractive error was 0.2[+ or -]0.25 D in the SRK-T formula group and 0.51[+ or -]0.59 D in the SRK-2 formula group. The difference between the two groups was statistically significant (p=0.001). Conclusion: The SRK-T formula gave results which were significantly closer to the refractive target than the SRK-2 formula. Keywords: Phacoemulsification, refraction, cataract Amac: Fakoemulsifikasyon cerrahisi uygulanan hastalarda cerrahi oncesi hedeflenen refraktif deger ile cerrahi sonrasi ortaya cikan sonuc refraktif degerin karsilastirilmasi. Gerec ve Yontem: Katarakt tanisi ile Ocak 2015- Mart 2017 arasinda Istanbul Universitesi Istanbul Tip Fakultesi Goz Hastaliklari biriminde cerrahi uygulanan hastalar calismaya alindi. Cerrahi oncesi hedeflenen refraktif deger ile cerrahi sonrasi ortaya cikan sonuc refraktif deger arasindaki fark refraktif hata olarak kaydedildi. Bulgular: 107 hastanin 150 gozu calismaya alindi. 100 gozde SRK-T, 50 gozde SRK-2 formulu kullanildi. Ortalama hedeflenen refraktif deger SRK-T formulu uygulanan grupta -0,21[+ or -]0,17 D, SRK-2 formulu uygulanan grupta -0,22[+ or -]0,29 D idi. Cerrahi sonrasi ortalama refraktif deger SRK-T formulu uygulanan grupta -0,19[+ or -]0,37 D, SRK-2 formulu uygulanan grupta -0,12[+ or -]0,77 D idi. Ortalama refraktif sapma SRK-T formulu kullanilan grupta 0,2[+ or -]0,25 D iken, SRK-2 formulu kullanilan grupta 0,51[+ or -]0,59 D idi ve refraktif sapma degerleri acisindan iki grup arasinda istatistiksel olarak anlamli fark mevcuttu (p=0,001). Sonuc: Fakoemulsifikasyon cerrahisi oncesi SRK-T biyometrik