Comparison of PDT, Intravitreal Ranibizumab and Combination for Polypoidal Choroidal Vasculopathy Under 1+PRN Regimen

Participants will receive the intravitreal ranibizumab treatment (0.05mg) at baseline and additional intravitreal ranibizumab(0.05mg) will be given to the participants when necessary（every three months）.

Participants will be given the standard verteporfin photodynamic therapy followed by intravitreal ranibizumab (0.05mg) 72h after the PDT treatment at baseline. Additional verteporfin photodynamic therapy and intravitreal ranibizumab (0.05mg) will be given to the participants when necessary.