Participants received a dose of 0.5 mg Ranibizumab every 4 weeks for the first year (intravitreal [IVT] injection). Thereafter a dose may be administered as frequently as every 4 weeks, but no less frequently than every 12 weeks.

Participants received a dose of 2.0 mg Aflibercept Injection every 4 weeks for the first year (intravitreal [IVT] injection). Thereafter a dose may be administered as frequently as every 4 weeks, but no less frequently than every 12 weeks.

Participants received a dose of 0.5 mg Aflibercept Injection every 4 weeks for the first year (intravitreal [IVT] injection). Thereafter a dose may be administered as frequently as every 4 weeks, but no less frequently than every 12 weeks.

Participants received a dose of 2.0 mg Aflibercept Injection every 8 weeks (including one additional 2.0 mg dose at Week 4) for the first year (IVT injection) and were to receive sham injections at interim monthly visits. During the second year, participants received 2.0 mg aflibercept as frequently as every 4 weeks, but no less frequently than every 12 weeks.

null hypothesis: pi ≤ pc-delta where pi is the probability that a participant maintained vision at week 52 under Aflibercept 2mg Q4, pc is the probability that a participant maintained vision at week 52 under Ranibizumab 0.5mg Q4 and delta is the non-inferiority margin. The null hypothesis is tested calculating a two-sided 95 % confidence using normal approximation of the difference of percentages of participants maintaining vision at week 52 (Ranibizumab 0.5mg Q4 minus Aflibercept 2mg Q4).

The difference is calculated as Ranibizumab minus Aflibercept. A negative value favors the Aflibercept 2mg Q4 group. As adjustment of multiple comparisons a conditional sequence of statistical hypotheses is used with alpha = 0.05.

Participants received a dose of 0.5 mg Ranibizumab every 4 weeks for the first year (intravitreal [IVT] injection). Thereafter a dose may be administered as frequently as every 4 weeks, but no less frequently than every 12 weeks.

Participants received a dose of 2.0 mg Aflibercept Injection every 4 weeks for the first year (intravitreal [IVT] injection). Thereafter a dose may be administered as frequently as every 4 weeks, but no less frequently than every 12 weeks.

Participants received a dose of 0.5 mg Aflibercept Injection every 4 weeks for the first year (intravitreal [IVT] injection). Thereafter a dose may be administered as frequently as every 4 weeks, but no less frequently than every 12 weeks.

Participants received a dose of 0.5 mg Ranibizumab every 4 weeks for the first year (intravitreal [IVT] injection). Thereafter a dose may be administered as frequently as every 4 weeks, but no less frequently than every 12 weeks.

Participants received a dose of 2.0 mg Aflibercept Injection every 4 weeks for the first year (intravitreal [IVT] injection). Thereafter a dose may be administered as frequently as every 4 weeks, but no less frequently than every 12 weeks.

Participants received a dose of 0.5 mg Aflibercept Injection every 4 weeks for the first year (intravitreal [IVT] injection). Thereafter a dose may be administered as frequently as every 4 weeks, but no less frequently than every 12 weeks.

Participants received a dose of 0.5 mg Ranibizumab every 4 weeks for the first year (intravitreal [IVT] injection). Thereafter a dose may be administered as frequently as every 4 weeks, but no less frequently than every 12 weeks.

Participants received a dose of 2.0 mg Aflibercept Injection every 4 weeks for the first year (intravitreal [IVT] injection). Thereafter a dose may be administered as frequently as every 4 weeks, but no less frequently than every 12 weeks.

Participants received a dose of 0.5 mg Aflibercept Injection every 4 weeks for the first year (intravitreal [IVT] injection). Thereafter a dose may be administered as frequently as every 4 weeks, but no less frequently than every 12 weeks.

Participants received a dose of 0.5 mg Ranibizumab every 4 weeks for the first year (intravitreal [IVT] injection). Thereafter a dose may be administered as frequently as every 4 weeks, but no less frequently than every 12 weeks.

Participants received a dose of 2.0 mg Aflibercept Injection every 4 weeks for the first year (intravitreal [IVT] injection). Thereafter a dose may be administered as frequently as every 4 weeks, but no less frequently than every 12 weeks.

Participants received a dose of 0.5 mg Aflibercept Injection every 4 weeks for the first year (intravitreal [IVT] injection). Thereafter a dose may be administered as frequently as every 4 weeks, but no less frequently than every 12 weeks.