*Women are more suffered from visual impairment than men
**because of a bit longer longevity of women as well as higher neglect from medical service than men
===economy of vision===
*global annual productivity loss is estimated as 411 bil. USD purchasing power parity (購買力平価)
==causes==
==control==
*VISION BEYOND 2020
*to deliver integrated people-centered eye care
==link==
*[https://globaleyehealthcommission.org/ The Lancet Global Health Commission on Global Eye Health]
*[https://iceh.lshtm.ac.uk/ International Centre for Eye Health]