Topical treatments for seasonal allergic conjunctivitis: systematic review and meta-analysis of efficacy and effectiveness by Christopher G Owen, Anupa Shah, Katherine Henshaw, Liam Smeeth, and Aziz Sheikh BJGP Volume 54(503):451-456 June 1, 2004 ©2004 by British Journal of General Practice

Odds ratio and 95% CI of perceived benefit of using sodium cromoglycate compared with placebo. Odds ratio and 95% CI of perceived benefit of using sodium cromoglycate compared with placebo. Study reference is indicated on the y-axis (in alphabetical order of author). The pooled estimate, based on a random-effects model, is shown by a dashed vertical line indicating benefit from sodium cromoglycate. Christopher G Owen et al. Br J Gen Pract 2004;54:451-456 ©2004 by British Journal of General Practice

Odds ratio and 95% CI of perceived benefit of using nedocromil sodium compared with placebo. Odds ratio and 95% CI of perceived benefit of using nedocromil sodium compared with placebo. Study reference is indicated on the y-axis (in alphabetical order of author). The pooled estimate, based on a fixed-effects model, is shown by a dashed vertical line indicating benefit from nedocromil sodium (2%). Christopher G Owen et al. Br J Gen Pract 2004;54:451-456 ©2004 by British Journal of General Practice

Odds ratio and 95% CI of perceived good or excellent treatment efficacy with topical mast cell stabilisers versus antihistimines. Odds ratio and 95% CI of perceived good or excellent treatment efficacy with topical mast cell stabilisers versus antihistimines. Study reference is indicated on the y-axis (in alphabetical order of author). The pooled estimate, based on a fixed-effects model, is shown by a dashed vertical line indicating benefit from topical antihistamine. Christopher G Owen et al. Br J Gen Pract 2004;54:451-456 ©2004 by British Journal of General Practice