People experiencing blurred vision or decreased colour sensitivity need to get their eyes checked as these seemingly minor problems may actually indicate retinal diseases that account for a significant share of the vision loss burden in the world, experts have warned. Retinal diseases often get underdiagnosed as people feel no pain when symptoms start showing up and the other eye often compensates for the poor eye, experts from the All India Opthalmological Society (AIOS) said at a workshop on retinal disease here.