9Chen PP,Aniyasu RG, Kaza V,el al. A randomized trial comparing mitomycin C and eonjunctival antograft after excision of primary pterygium. Am Ophthahnol, 1995,120:151-154.
10Ozer A,Yildifim N,Erol N,et al . Long-term Results of bale sclera, limbal-conjunctival autogrdt and amniofic membrane graft techniques in primary pterygium excisions. Ophthalmologica, 2009, 223:269-273.