Causes of Metamorphopsia
Metamorphopsia can be a symptom of a number of eye disorders involving the retina or macula. Some of these conditions include the following:

Age-related macular degeneration
Epiretinal membrane and vitreomacular traction
Posterior vitreous detachment
Macular hole

Diagnosis
Tests used for diagnosis of Metamorphopsia mostly make use of subjective assessments of how a person views regular patterns. Many of these tests have a poor ability to accurately diagnose or identify a person with the disease (i.e.,poor sensitivity). The use of assessments such as a psychophysical test called preferential hyperacuity perimetry, which assesses a person’s ability to any misalignments of visual objects, may permit a more sensitive diagnosis of Metamorphopsia. Treatment and Prognosis
Metamorphopsia is a symptom of several common retinal and macular diseases, therefore treating the underlying disorder can improve symptoms. For people who have conditions such as Epiretinal membrane (ERM), Macular Holes and Retinal Detachment, decreased metamorphopsia is associated with an increase in visual acuity. Quantitative evaluation of metamorphopsia is an important step in understanding visual functions of individuals with macular disorders and is an essential tool for physicians in evaluating treatment results. Types
Dry (non-exudative, > 80%)—deposition of yellowish extracellular material in and between Bruchs membrane and retinal pigment epithelium (“drusen”) with gradual loss in vision.Wet (exudative, 10–15%)—rapid loss of vision due to bleeding secondary to choroidal neovascularization. Etymology
Gk, meta + morphe, form, opsis, sight

See also
Dysmorphopsia
Hallucination


== References ==
A urethrovaginal fistula is an abnormal passageway that may occur the urethra and the vagina. It is a sub-set of vaginal fistulas. It results in urinary incontinence as urine continually leaves the vagina. It can occur as an obstetrical complication, catheter insertion injury or a surgical injury.It is also called a urethral fistula and may be referred to as UVF. They are quite rare. In the developed world, they are typically due to injuries due to medical activity. == References ==