<unk>  is a condition affecting human visual perception in which objects are perceived to be smaller than they actually are.<unk>  can be caused by optical factors (such as wearing glasses), by distortion of images in the eye (such as optically, via swelling of the cornea or from changes in the shape of the retina such as from retinal edema, macular degeneration, or central serous retinopathy), by changes in the brain (such as from traumatic brain injury, epilepsy, migraines, prescription drugs, and illicit drugs), and from psychological factors. Dissociative phenomena are linked with<unk> , which may be the result of brain-lateralization disturbance.<unk>  is also commonly reported when the eyes are fixating at (convergence), or focussing at (accommodation), a distance closer than that of the object in accord with Emmert's law. Specific types of<unk>  include hemimicropsia, a form of<unk>  that is localized to one half of the visual field and can be caused by brain lesions in one of the cerebral hemispheres. Related visual distortion conditions include<unk> , a less common condition with the reverse effect, and Alice in Wonderland Syndrome, a condition that has symptoms that can include both<unk>  and<unk> .
Micropsia
Palinopsia
Photopsia
Dysmorphopsia
Pelopsia
Cerebral polyopia
Akinetopsia
Ocular dysmetria