There is a grim forecast on global blindness.<br /><br />British researchers are warning that the number of blind people is set to triple by 2050 with more of us living longer.<br /><br />A study in Lancet Global Health predicts current blindness levels of 36 million will rise to 115 million over the next four decades, if nothing is done to provide better treatment.<br /><br />South Asia and Sub-Saharan Africa are particularly affected. <br /><br />Socio-economic development has actually helped reduce blindness and vision impairment over the past 20 years, but an ageing population is set to cause a hike in the figures.<br />
