Acute blurred vision is a usual clinical setting which could be related to many different etiologies. The ophthalmologist has to precise the symptomatology to differentiate long or short visual acuity loss, troubles of accommodation, metamorphopsia or central scotomas. Then a complete ophthalmologic examination will try to localise the causative lesion in the cornea, the lens, the chorio-retina or in the intraocular media.