Footnotes

• This is the first in a series of short articles summarising the results of Cochrane reviews.

• Contributors JE and JL made substantial contributions to conception and design, acquisition of data, or analysis and interpretation of data of the Cochrane reviews on which this summary is based. JE drafted this summary and JL revised it critically for important intellectual content. Both JE and JL approved the version to be published.

• Funding This research received no specific grant from any funding agency in the public, commercial or not-for-profit sectors.

• Competing interests None.

• Provenance and peer review Not commissioned; externally peer reviewed.

• ↵i AMD was defined as extensive small drusen, intermediate drusen, large drusen, non-central geographic atrophy, or pigment abnormalities in one or both eyes, or advanced AMD/vision loss due to AMD in one eye.

• ↵ii AREDS formula (per day): vitamin C (500 g), vitamin E (400 IU), β-carotene (15 mg), zinc oxide (80 mg).