title: Avoiding gas-fluid exchange in postvitrectomy photocoagulation.
mesh_terms: D005123:Eye; D005740:Gases / Q000008:administration & dosage*; D006801:Humans; D008028:Light Coagulation / Q000379:methods*; D011184:Postoperative Period; D014821:Vitrectomy
chemical_list: D005740:Gases