There is substantial evidence that Elmiron causes retina damage and severe vision-related disorders, like maculopathy. The study above showed that 25 percent of users developed pigmentary maculopathy after extended use. This injury of the macula (the center of the retina) can cause permanent vision loss and even total blindness. The condition can cause difficulty with vision-focused tasks, like reading, in milder cases. Some doctors confuse retinal maculopathy for age-related macular degeneration, making it critical that Elmiron users see a doctor who knows the difference. Only then can they claim compensation for their Elmiron-related vision loss.