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).
A Dr. Laura C. Fine, MD , Ophthalmology, answered. Seeing shooting stars -- a phenomenon called photopsia -- is not unusual as people age. Solitary flashes appear as sparks or minuscule strands of light, almost like streaks of lightning across the sky. They occur when the vitreous gel bumps, rubs, or tugs against the retina (the innermost layer of the eye).