###Human: What causes sudden white haziness? ###Assistant: Hello. There are a number of causes which could lead to such a problem. In the eyes, macular degeneration can cause problems like a distortion of images, also called metamorphopsia and a drop in vision. Retinal detachment can cause flashes of light which come and go in an instant especially on eye movements. It also causes a drop in vision and floaters on your field of vision. The posterior vitreous detachment also causes flashes of light without a drop in vision. So, what I mean to say is eye related problems will have accompanying eye-related symptoms, other than just a white light. Coming to other causes, fortification spectra are seen in some cases of migraine and are usually described as multi-colored lights just before the patient experiences headaches. These are the most common causes which can lead to a feeling of seeing light. In case you feel like you fit into one of the above, there is no need to worry as most of these are treatable. In case you feel you do not have anything in common with the above, please let me know about your condition in further details, example what causes this light to come, is it accompanied by any physical symptoms, does it arise while you are in a certain place or while doing a specific action.