Table 3. Visual acuity outcomes and mean number of injections in different clinical studies^[17].

Author and study	Region	No. of eyes	Mean No. of injections	Mean increase in the number of ETDRS letters over one year
CATT (Martin et al, 2012)[14]	Multicentre	285	6.9	6.9
PrONTO (Philip J. Rosenfeld et al, 2009)[15]	America	40	5.6	5.6
Muniraju et al, 2013 [17]	Britain	174	4.8	3.0
SUSTAIN (Holz et al, 2011)[18]	Multicentre	513	5.6	5.6
Arias et al, 2011[19]	Spain	90	4.4	4.4
Bandukwala et al, 2010[20]	Canada	94	5.1	5.1
Hjelmqvist et al, 2011[21]	Sweden	370	4.7	4.7
Kumar et al, 2011[22]	Britain	81	5.6	5.6
Williams and Blyth, 2011[23]	Britain	615	5.6	5.6
Present study	China	91	5.1	7.4