{"cm":[],"snellen":[],"diopter":{"normalized":[{"left_sph":"-6.5","left_cyl":"","left_axis":"","right_sph":"-5.75","right_cyl":"","right_axis":"","date":"2017-03-31"}],"differential":[{"left_sph":"-5","left_cyl":"","left_axis":"","right_sph":"-4.25","right_cyl":"","right_axis":"","date":"2017-03-31"}]}}