Objective: This study aims to evaluate the changes in intraocular lens (IOL) power calculations using different formulas before and after upper eyelid blepharoplasty in patients with visual field defects due to dermatochalasis. Material and Methods: A total of 166 eyes from 166 patients with superior visual field narrowing due to dermatochalasis were included in this prospective study. Keratometric measurements and IOL power calculations were assessed at baseline and during postoperative follow-ups using Nidek optical biometry (ALScan, Nidek Co., Ltd., Japan). Results: The study included 166 eyes of 166 patients, 85.5% of whom were female and 14,5% male. The mean age of females was 56.80±9.73 years (range 37-78), and for males, it was 55,91±7.95 years (range 44-68). There were no significant differences in the measurements of average and steepest corneal curvature or corneal astigmatism (p>0.05). However, significant differences were found in the IOL power calculations using different formulas [SandersRetzlaff-Kraff-Theoretical (SRT-T), Hoffer, Holladay, and Haigis] before and after surgery (p<0.000). Conclusion: To the best of our knowledge, the current study is the first to explore this topic with multiple IOL formulas and a larger sample size.
Keywords: Blepharoplasty; intraocular lens formula; keratometry; optical biometry
Amaç: Bu çalışma, dermatoşalazis nedeniyle görme alanı daralması olan hastalarda üst göz kapağı blefaroplastisi öncesi ve sonrası farklı formüllerle yapılan göz içi lens (GİL) gücü hesaplamalarındaki değişiklikleri değerlendirmeyi amaçlamaktadır. Gereç ve Yöntemler: Dermatoşalazis nedeniyle üst görme alanı daralması yaşayan toplam 166 hastanın 166 gözü, bu prospektif çalışmaya dâhil edilmiştir. Keratometrik ölçümler ve GİL gücü hesaplamaları, ameliyat öncesi ve ameliyat sonrası takiplerde Nidek optik biyometri cihazı (AL-Scan; Nidek Co., Ltd., Japan) kullanılarak değerlendirilmiştir. Bulgular: Çalışmaya 166 hastanın 166 gözü dâhil edilmiştir. Hastaların %85,5'i kadın, %14,5'i erkekti. Kadınların ortalama yaşı 56,80±9,73 (37-78), ve erkeklerin ise 55,91±7,95 yıl (44-68) olarak bulunmuştur. Ortalama ve en dik kornea eğriliği ile korneal astigmatizm ölçümlerinde anlamlı bir fark bulunmamıştır (p<0.05). Ancak, ameliyat öncesi ve sonrası farklı formüllerle [Sanders-Retzlaff-Kraff-Theoretical (SRK-T), Hoffer, Holladay ve Haigis] yapılan GİL gücü hesaplamalarında anlamlı farklılıklar tespit edilmiştir (p<0,000). Sonuç: Bildiğimiz kadarıyla bu çalışma birden fazla GİL formülü ve daha büyük örneklem boyutu ile bu konuyu inceleyen ilk araştırma olma özelliğini taşımaktadır.
Anahtar Kelimeler: Blefaroplasti; göz içi lens formülü; keratometri; optik biyometri
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