I have been nursing for 18 years with nystagmus related to albinism. I also have never really thought of myself as having a disability. I have worked in both Canada and the US. I also have worked in many areas over my career, including ICU and the ER, most currently paeds. I have never had a problem doing my job, the small accommodations you mention will serve you well. I have never harmed a patient or made an error related to the low vision. There is no reason for you not to succeed in nursing as well.