Vitreopapillary Tractions

Objective & Hypothesis:Vitreo-papillary tractions develop in the posterior vitreous detachment (PVD) development process that vitreous cannot pass the separation process from papilla.

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Key Findings & Data:Type 1: vitreous band traction on the optic disc Type 2: prominent vitreous condensation at the optic disc surface and cup, Type 3: elevation of the anterior optic disc cup border above the level of the retina pigment epithelium/Bruch’s membrane.

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Conclusion & Impact:Vitrectomy is performed in situations that threaten visual functions in the treatment.

🔬Design:Research Article

📍Scope:Comprehensive Sample

⚙️Variables:Domain Parameters

Abstract

Vitreo-papillary tractions develop in the posterior vitreous detachment (PVD) development process that vitreous cannot pass the separation process from papilla. Distortion of the nerve fiber layer and microvascular structures in the papillae by the posterior hyaloid traction causes deterioration of visual functions. Conditions causing local ocular anatomic variations, such as small crowded papillae, previous trauma, intraocular surgery, intraocular inflammations, intraocular vascular problems may be predisposing for abnormal PVD. Vitreopapillary tractions (VPT) can be classified as primary if there is no other ocular pathology that can lead to anormal PVD, and secondary, if there is a concurrent pathology that can lead to anormal PVD. Three types of VPT’s are defined according to the Optical coherence tomography (OCT) based classification. Type 1: vitreous band traction on the optic disc Type 2: prominent vitreous condensation at the optic disc surface and cup, Type 3: elevation of the anterior optic disc cup border above the level of the retina pigment epithelium/Bruch’s membrane. Diagnosis is made by clinical examination ultrasonography and OCT findings. Vitrectomy is performed in situations that threaten visual functions in the treatment.

Özet

Vitreopapiller traksiyonlar arka vitre dekolmanı (AVD) gelişim sürecinde vitreusun papilladan ayrılış sürecini tamamlayamaması sonucu gelişir. Arka hyaloidin papilladaki sinir lifi tabakası ve mikrovasküler yapılarda traksiyonla oluşturduğu distorsiyon, görme fonksiyonlarında bozulmaya neden olmaktadır. Küçük kalabalık papilla, geçirilmiş travma, intraoküler cerrahi, intraoküler enflamasyonlar, intraoküler vasküler problemler, gibi lokal oküler anatomik varyasyonlara neden olan durumlar anormal AVD ve VPT gelişiminde rol oynayabilir. VPT ‘lar anormal AVD’ye neden olabilecek oküler başka patoloji yok ise primer, anormal AVD’ye neden olabilecek eş zamanlı başka patoloji var ise sekonder olarak sınıflanabilir. Optik koherans tomografi (OKT) bazlı yapılan sınıflamaya göre 3 tip tanımlanmıştır. Tip 1: optik diske traksiyon uygulayan vitre bandı olması. Tip 2: Optik disk ve çukurluk yüzeyinde belirgin vitreus kondensasyonu olması Tip 3: Optik disk çukurluk ön duvarının retina pigment epiteli / Bruch membranı seviyesinin üzerine yükselmesi, şeklinde tanımlamıştır. Tanı klinik muayene ultrasonografi ve OKT bulguları ile konulur. Tedavide görmeyi tehdit eden durumlarda vitrektomi uygulanmaktadır.

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Cite This Article

KOÇ, F., KAHRAMAN, H. G., ORDUYILMAZ, B. (2018). Vitreopapillary Tractions. Güncel Retina Dergisi, Cilt: 2 - Sayı: 3, 244–248. https://ajindex.com/articles/173577

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