MARINA [7] ANCHOR [8] PrONTO Gupta et al.[14] CATT [15] Current Study
Treatment regimen Monthly Monthly 3+PRN 3+PRN 1+PRN monthly 1+PRN 3+PRN 1+PRN
No. injections at 12 months 12 12 5.6 6 4.5 11.7 6.9 4.83 3.52
Mean letters* improved at 12 months 7.2 11.3 9.3 4.4 4.1 8.5 6.8 9.5** 8.0**
Eyes losing fewer than 15 letters 94.6 96.4 95.0 89.4 93.5 94.0 95.0 90.1 95.2
Eyes gaining 15 letters or more 33.8 40.3 35.0 52.4 48.5 34.0 25.0 54.5 28.7
* Measured by Early Treatment of Diabetic Retinopathy Study (ETDRS) chart ** Letters on the ETDRS chart calculated a letter equivalent to -0.02 of logMAR equivalent
Table 1: Comparison of studies of intravitreal ranibizumab for neovascular AMD.