Rarely anti-VEGF meds may help. Tranfoveal subthreshold diode micropulse laser (SDM) often improves VA by several lines without any notable anatomic change in IJFMVT. This is an interesting feature of SDM in several macular disorders - improving VA out of proportion to any anatomic change and has been noted by several investigators. SDM appears to improve retinal function in general, evidenced by improved retinal sensitivity by microperimetry in the areas of treatment.
Joining in late; but I'd order glucose tolerance test. In our series (Retina 2012), we found a frequent association with diabetes. I don't do FFA to diagnose MacTel anymore, SD-OCT and Fundus Autofluorescence, if available, are good non-invasive alternatives. As Rajiv said, treatment is only indicated for SRNV (the membranes don't come from choroid, so CNV is probably less suited).