Microsoft Windows uses .lnk as the file extension for shortcuts to local files, and .URL for shortcuts to remote files, like web pages. Shortcuts are typically implemented as a small file containing a target URI or GUID to an object, or the name of a target program file that the shortcut represents. The shortcut might additionally specify parameters to be passed to the target program when it is run.
Photopsia is the presence of perceived flashes of light. It is most commonly associated with posterior vitreous detachment, migraine with aura, migraine aura without headache, retinal break or detachment, occipital lobe infarction, and sensory deprivation (ophthalmopathic hallucinations).
Photopsia Information. Photopsia is an eye condition where the person begins to see strange flashes of light. A lot of the time it is accompanied by a migraine headache, or else it appears directly before a migraine occurs. A lot of people see these flashes of light as an indicator that a migraine will be occurring very shortly.