** Shares of drug developer Clearside Biomedical CLSD.O
rise ~38.5% to $2.05 premarket
** Company says its drug CLS-AX showed stable vision in
patients with wet age-related macular degeneration for up to 6
months compared to Regeneron Pharmaceuticals' REGN.O
aflibercept, during a mid-stage trial
** Wet AMD is a disorder where abnormal blood vessels grow
in the back of the eye, causing vision loss
** Up to last close, Clearside stock up 26.5% YTD
(Reporting by Christy Santhosh)
((Christy.Santhosh@thomsonreuters.com))