Shadow or Dark Curtain in Vision
A shadow or dark curtain describes a potentially urgent problem when vision is partially or totally blocked by dark or blurred shapes often beginning in the peripheral or side vision. This disturbance may come from above, below or from the side. It may occur in one or both eyes at the same time. These symptoms are associated with serious eye diseases and require a comprehensive eye examination as soon as possible.
Shadow or Dark Curtain in Vision may be associated with: