Eye chart chart or Jaeger chart can be used. While the Snellen chart remains the default, some authors have argued that the logMAR chart is superior. The logMAR chart presents the same number of symbols on each line, uses a typeface with letters that are equally legible at various sizes, and by varying the symbol size logarithmically, it is easier to use at nonstandard distances. As a consequence of these improvements, the logMAR chart has been proposed as a more reliable tool for measuring visual acuity. However, the logMAR chart has not yet been widely adopted. It can be difficult to measure
International Resources for the Improvement of Sight International Resources for the Improvement of Sight International Resources for the Improvement of Sight (IRIS) is an International NGO that specializes in prevention of blindness and restoration of sight. It was founded in 1996 by Michele Claudel and John Stewart. It was initially founded to help people in Cambodia without access to eye care, it has since expanded to Nepal, Lao PDR and Sri Lanka. IRIS equips new eye clinics, strengthens existing ones, conducts eye screening, provides cataract surgery for poor people, primary eye care training for staff. IRIS has partnered with other NGOs to provide funding for services, such