Journals / MN Oftalmoloji / 2014 / Cilt: 21 - Sayı: 3

Corneal astigmatism prevalence in patients who underwent phacoemulsification

Fakoemülsifikasyon uygulanan hastalarda korneal astigmatizma prevalansı

Pages
169–173
DOI
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AI Summary & Key Takeaways

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⚡ TL;DR(Too Long; Didn't Read)

We suggest that the options to correct astigmatism should be evaluated in light of these findings and by taking these values into considerations in patients who are planned for cataract surgery.

📌 3 Key Takeaways

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Objective & Hypothesis:Aim: To assess the types, degrees and frequencies of corneal astigmatism in patients we followed up in our clinic to perform cataract surgery and toric / multifocal toric IOL and re- fractive surgery were to create guide for applications.
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Key Findings & Data:Material and Method: Age, horizontal and vertical keratometry and corneal astigmatism values were retrospectively studied in 621 patients who did not have a history of eye trauma, surgery and any eye disease besides cataract.
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Conclusion & Impact:We suggest that the options to correct astigmatism should be evaluated in light of these findings and by taking these values into considerations in patients who are planned for cataract surgery.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Aim: To assess the types, degrees and frequencies of corneal astigmatism in patients we followed up in our clinic to perform cataract surgery and toric / multifocal toric IOL and re- fractive surgery were to create guide for applications. Material and Method: Age, horizontal and vertical keratometry and corneal astigmatism values were retrospectively studied in 621 patients who did not have a history of eye trauma, surgery and any eye disease besides cataract. Keratometry values were obtained using the IOL Master 500 (Carl ZeissMeditec, Germany) device that utilizes the partial coherence interfer- ometry technique. Astigmatism frequency and types and their relationships with age were an- alyzed. Results: Of the 621 patients, 318 were males and 303 were females and their average age was 67.53 (26-92). Patients were categorized as ages below 40, 41-50, 51-60, 61-70, 71-80, and above 80. The median corneal astigmatism was 0.85 D (0.50-1.39). The average ker- atometry values were found as K1;43.29±1.84 D (34.09-49.34), K2;44.36 ± 2.36 D (36.25- 48.42). The average axial length was measured as 23.53±1.50 mm (21.00-32.01). Approximately, 13.84% of the patients had an astigmatic value of 1.50 D and above. 9.33% had an astigmatic value of 2.0 D and above. As the with-the-rule astigmatism decreased with increasing age, against-the-rule astigmatism increased; while no clear change was observed in terms of oblique astigmatism. Conclusion: While a significant portion of potential cataract surgery patients had an astig- matic value of 1 D and below, the proportion of patients who had an astigmatic value of 1.50 D and above was 13.84%. It was observed that increasing age did not have an impact on the numerical values of astigmatism but clearly changed the axis of astigmatism. As the with-the- rule astigmatism decreased with an increasing age, against-the-rule astigmatism increased; while no clear change was observed with oblique astigmatism. We suggest that the options to correct astigmatism should be evaluated in light of these findings and by taking these values into considerations in patients who are planned for cataract surgery.

Özet

Amaç: Katarakt nedeniyle fakoemülsifikasyon cerrahisi uygulanan hastalarda korneal as- tigmatizma tiplerini, derecelerini ve sıklığını değerlendirmek ve torik/ mültifokal torik İOL ve refraktif cerrahi uygulamalar için rehber oluşturmak. Gereç ve Yöntem: Katarakt dışında herhangi bir göz rahatsızlığı olmayan, daha önce göz cerrahisi ya da travması geçirmemiş 621 hastanın yaşları, yatay ve dikey keratometri ve kor- neal astigmatizma değerleri geçmişe dönük dosya taraması ile incelendi. Hastaların kerato- metri değerleri kliniğimizde kullanılan parsiyel koherans interforometri yöntemi ile (İOL Master 500, Carl Zeiss Meditec, Almanya) değerlendirildi. Astigmatizma sıklığı, tipleri ve bunların yaş ile ilişkileri incelendi. Bulgular: Yaş ortalaması 67,53 (26-92) yıl olan 621 hastanın 318’i erkek (%51,2), 303’ü kadındı (%48,79). Hastalar 40 yaş altı, 41-50 yaş, 51-60 yaş, 61-70 yaş, 71-80 yaş ve 80 yaş üzeri olarak 6 gruba ayrıldı. Ortanca korneal astigmatizma 0,85 D (diyoptri) (0,50-1,39 ) idi. Birbirine dik iki eksendeki ortalama keratometri değerleri K1: 43,29±1,84 D (34,09-49,34), K2: 44,36±2,36 D (36,25-48,42) olarak saptandı. Ortalama aksiyel uzunluk 23,53±1,50 mm (21,00-32,01) olarak ölçüldü. Hastaların yaklaşık %13,84' ünde 1,50 D ve üzeri astigmatizma mevcut iken, %9,33' ünde 2,0 D ve üzeri astigmatizma tespit edildi. Artan yaşla birlikte oblik astigmatizmada belirgin değişiklik izlenmezken, kurala uygun astigmatizmanın azaldığı, kura- la aykırı astigmatizmanın ise arttığı görüldü. Sonuç: Katarakt cerrahisi gerçekleştirilen hastaların büyük bölümü 1 D ve altında astig- matik değerlere sahipken, 1,50 D ve üzerindeki astigmatik değerlere sahip hasta oranı %13.84 olarak tespit edildi. Artan yaşın astigmatizmanın sayısal değerleri üzerinde etkisi olmadığı an- cak astigmatizmanın eksenini belirgin şekilde değiştirdiği görüldü. Katarakt cerrahisi planla- nan hastalarda bu değerlerin dikkate alınarak astigmatızmayı düzeltici seçeneklere bu bilgiler ışığında karar verilmesi gerektiğini düşünmekteyiz.

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Cite This Article

ATAŞ, M., DEMİRCAN, S., YUVACI, İ., PANGAL, E., ZARARSIZ, G. (2014). Corneal astigmatism prevalence in patients who underwent phacoemulsification. MN Oftalmoloji, Cilt: 21 - Sayı: 3, 169–173. https://ajindex.com/articles/295621

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