Modern Approaches InTreatment Of Keratoconus Using Femtosecond Laser

Ahmed Ayed Atwa Shiba;

Abstract


Keratoconus is the most common primary ectasia. It usually occurs in the second decade of life and affects both genders and all ethnicities. Ocular signs and symptoms vary depending on disease severity. Early forms normally go unnoticed unless corneal topography is performed. Disease progression is manifested with a loss of visual acuity which cannot be compensated for with spectacles. Corneal thinning frequently precedes ectasia. In moderate and advance cases, a hemosiderin arc or circle line, known as Fleischer's ring, is frequently seen around the cone base. Vogt's striaes, which are fine vertical lines produced by Descemet's membrane compression, is another characteristic sign. Most patients eventually develop corneal scarring. Munson's sign, a V-shape deformation of the lower eyelid in downward position; Rizzuti's sign, a bright reflection from the nasal area of the limbus when light is directed to the limbus temporal area; and breakages in Descemet's membrane causing acute stromal oedema, known as hydrops, are observed in advanced stages.

Classifications based on morphology, disease evolution, ocular signs and index-based systems of keratoconus have been proposed. Theories into the genetic, biomechanical and biochemical causes of keratoconus have been suggested.

Management varies depending on disease severity and visual needs.The primary aim of treatment for patients with keratoconus is visual restoration by remodeling the corneal geometryand arresting the progressive nature of the disease.Corneal collagen cross-linking (CXL) is another surgical technique for the treatment of the ectatic disease. In this procedure, riboflavin and UV light are applied on the cornea to generate a photochemical reaction that induces the creation of links between collagen fibers, resulting in increased corneal tissue strength. As of today, it is the only technique which has been clinically shown to stop progression of the disease.


Other data

Title Modern Approaches InTreatment Of Keratoconus Using Femtosecond Laser
Other Titles التقنيات الحديثة فى علاج القرنية المخروطية باستخدام ليزر الفيمتوثانية
Authors Ahmed Ayed Atwa Shiba
Issue Date 2016

Attached Files

File SizeFormat
G14128.pdf815.35 kBAdobe PDFView/Open
Recommend this item

Similar Items from Core Recommender Database

Google ScholarTM

Check

views 8 in Shams Scholar
downloads 3 in Shams Scholar


Items in Ain Shams Scholar are protected by copyright, with all rights reserved, unless otherwise indicated.