Below is an instruction that describes a task. Write a response that appropriately completes the request. ### Instruction: Pediatric neurology help. Sudden onset Anisocoria (1.3mm) in 3 siblingsMy 4.5, 2.5, and 6 week old all have Anisocoria. The first 2 measure 1.3mm difference, the third has not been seen.My 4.5 year old was referred after he didnt pass the vision screen at pediatrician (they turn off lights and the kids look in the box with birds chirping.) My 2.5 year old failed same test and was referred. It is noticeable by naked eye with the 6 week old. The older two have previously passed the eye test in years prior. This is the first appointment for both that they failed.My 4.5 year old went to a pediatric eye doctor and he said he couldnt find any other issues. He said he has seen it come and go in kids and even switch eyes. I cant find anything like that on Google. Nothing about it being genetic. He said 1 in 10,000 chance that its a neurological issue because no other symptoms present. My 2.5 year old will go on 10/20. My 4.5 year old will go for follow up on 10/31.I dont know what other actions to take. It is unsettling this popped up in all of them with no answers.. ### Response: I'm not an opthalmologist, but if three children in the same household developed this as a sudden onset issue in the same time period it seems reasonable to consider an environmental trigger or exposure. New medicines in the house?.