My 7 yr old granddaughter has been to three Ophthalmologists in the last two weeks in which no one can find answers. She has sudden blurriness in both eyes. Can't see close up at all. With or without glasses, no vision change with any prescription. Healthy eyes, can't find anything. She is an avid little reader and can not read. The last dr, came VERY highly recommended, he also ran tests, pulled my daughter aside and said that sometimes we see children "fake it" at this age, she is NOT faking it, and in his 35 yrs has no idea what's going on, will research and get back to her. He asked if she started any new meds, she has recently started Zantac OTC 75mg per her pediatric GI specialist at Riley Childrens Hospital for stomach issues. We thought perhaps a side effect?? Her GI says she hasn't heard of that. Any help would be greatly appreciated! Thanks!