Also found in: Dictionary, Thesaurus, Medical, Wikipedia.


A disorder characterized by double vision.



a disturbance of vision consisting in the doubling of seen objects. Most often diplopia occurs when there is weakening (paresis) or paralysis of one of the oculomotor muscles, when coordinated, harmonious movements of the eyeballs are disrupted, as a result of which the image of the observed object falls on noncorresponding (located at various distances from the macula lutea) points of the retinas of both eyes. In diplopia binocular vision is always disturbed. Diplopia disappears when one eye is closed. Rarely (for example, after trauma, when there is detachment of the root of the iris and two so-called pupils are formed, and when there is subluxation of the crystalline lens), monocular diplopia—when the same object yields two images in one eye—may occur. When the other eye is closed the doubling does not cease. Investigation of diplopia is valuable in identifying paralyses of the oculomotor muscles, which occur frequently even with some constitutional diseases (encephalitides and cerebral hemorrhages, for example).


References in periodicals archive ?
Patient had drastic improvement after surgery and reported complete resolution of his retro-orbital pain, headache and diplopia within 5 days of surgery (Figure 3).
Other less frequently observed complications were transient blindness, choroidal infarction, diplopia and orbital infections.
The toxin of North America Viper is a hemorrhagic or thromboxic toxin, but it also has a weak effect of neurotoxicity and it may lead to ptosis or diplopia with this effect (4,8,9).
Out of these nine patients presented with diplopia as a result of their injury and following surgical exploration of the infraorbital floor.
Jaw claudication, diplopia, or a temporal artery abnormality on physical exam increase the likelihood of temporal arteritis.
Symptoms included blurred vision in 31 patients, bright spots in 15, zigzag lines in 7, dark spots in 5, diplopia in 4, transient blindness in 3, and hemianopsia in 2.
Abdominal pain, colicky pain, nausea, vomiting, diarrhea, headache, sweating, dry mouth, dysphagia, diplopia, ptosis, weakness of extremities, and dyspnea.
In this reference for ophthalmologists, neurologists, emergency room physicians, optometrists, and primary care physicians, Levin (ophthalmology, University of Wisconsin Medical School) and Arnold (neuro-ophthalmology, University of California-Los Angeles) offer a guide to interpreting features of symptoms and signs of neuro- ophthalmic disease, designed to aid in the initial evaluation and diagnosis of patients with visual loss, diplopia, ptosis, and similar disorders.
But when you have double vision - or diplopia, in medical terms - you see two images of a single object, either side by side or one on top of the other.
For purposes of the investigation, a probable case-patient was defined as a person who had dined at the restaurant on February 22 or 24 and had experienced diplopia or blurred vision and at least 1 of the following symptoms: dysphagia, dry mouth, dysarthria, upper/lower extremity weakness, dyspnea, and severe constipation.