| Not usually. However it was 2 days ago you started noticing. There were probably signs before then you attributed to something else. Then many times we compensate automatically with out thinking. Like frequent urination we may drink less water. Eventually we get dehydrated and then the abnormal thirst, sometimes attributed to heat, followed by even more urination when we drink more. Eyesight degradation is a gradual thing and our eyes compensate until they no longer can, then we notice. Then there is the fact that this disease affects everyone in different ways, combinations, and rates. So yes, it is feasible to notice the extreme symptoms over a short time frame. The symptoms are also shared with other diseases which makes it imperative to see a doctor to get definative test done. | 
