ISSN: 1300-0365
Dil: Türkçe
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Refractive And Visual Outcomes Of Arcuate Keratotomy In Postkeratoplasty Astigmatism
Sait EĞRİLMEZ*, Ayşe YAĞCI**
* Uz.Dr., Ege Üniv Tıp Fakültesi Göz Hastalıkları AD, ** Prof.Dr., Ege Üniv Tıp Fakültesi Göz Hastalıkları AD, İZMİR
Objective: In this prospective study, we aimed to evaluate nonacuity parameters of vision in addition to visual acuity and refractive changes induced by arcuate keratotomy in astigmatism following penetrating keratoplasty.
Materials and Method: Arcuate incisions were applied to corneas had high astigmatism following keratoplasty based on pachimetry, corneal topography and keratoscopy findings. Absolute and vectorial changes of astigmatism were analysed. Contrast sensitivity and retinal light sensitivity were evaluated in addition to visual acuity to determine the visual performance.
Results: Eleven eyes of 11 patients were included to the study. Mean follow-up period is 24.1 ± 13.6 (ranging from 10.7 to 42.7 months) months. Keratometric astigmatism decreased from an average of 6.41 ± 2.98 diopters (D) preoperatively to 2.85 ± 1.52 D postoperatively(p=0.003). Mean spectacle-corrected visual acuity improved 0.10 ± 0.11 LogMAR units (p=0.027). No significant change was found on contrast sensitivity and retinal light sensitivity levels. Irregular topographic pattern increased to 3 eyes postoperatively from 1 eye at preoperative period.
Conclusion: Arcuate keratotomy decreases graft astigmatism and increases visual acuity levels. However, contrast sensitivity and retinal light sensitivity levels do not present any significant change in addition to increasing of irregular topographic pattern following arcuate keratotomies. It is concluded that, analyses of nonacuity parameters of vision supported with aberrometric measurements is required to evalute the efficiency of this method on visual function properly.Keywords: Keratoplasty, Astigmatism, Arcuate keratotomy, Contrast sensitivityTürkiye Klinikleri Oftalmoloji 2003, 12:181-187
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