What are the signs and symptoms of double vision?
A symptom is something the patient feels and reports, while a sign is something other people, including a doctor or nurse may detect. For example, pain may be a symptom while a rash may be a sign. Double vision, which is sometimes confused with blurred vision, as mentioned above, is when the individual sees two images of a single object. Blurred vision is a single unclear image, while double vision is the perception of two images, when there is only one. Double vision affects people in different ways. Some patients may experience double vision occasionally, while others have it all the time. Some people say they only experience double vision when they are looking in a specific direction. If an individual gets double vision when they see in one particular direction, it is most likely due to eye-muscle weakness – either the lateral rectus muscle or the medial rectus muscle. Both muscles are located on either side of the eyeball – their movements make the eyeball move to the left or right