Age related macular degeneration: Smoking entails major risk of blindness

We slipped up on a couple of points in this letter by Simon P Kelly and colleagues (28 June, pp 1458-9). Firstly, during the editing process a rogue “C” got inserted before “Simon.” Secondly, we misinterpreted a sentence in their letter. In the third paragraph, the final sentence should read: “Because of this, smoking was estimated to cause or contribute to up to 20% of blindness in people aged over 50.” We had wrongly attributed this statement to Chodpar et al's study, instead of the Australian Blue Mountains eye study.