Pterygium Grading Classification



Grade 0 - There is no pterygium tissue present

Grade 1 (trace)- Pterygium tissue is translucent, similar to conjunctiva. Episcleral vessels under the body of the pterygium are easily visible. Minimally dilated vessels with slightly increased

Grade 2 (mild) - Pterygium tissue is pink. Episcleral vessels under the body of the pterygium are distinguishable. Dilated vessels with increased density

Grade 3 (moderate) - Pterygium tissue is red. Episcleral vessels under the body of the pterygium are not distinguishable. Significant tortuous and engorged vessels with minimal

Grade 4 (severe) - Pterygium tissue is deep bright diffuse red, very thick. Episcleral vessels and tissues under the body of the pterygium are totally obscured. Dense network of engorged vessels



#Pterygium #Grading #Classification #grades #diagnosis #clinical #ophthalmology