The most common tests perform to diagnose<unk>  are the Farnsworth-Munsell 100 hue test, the Ishihara plate test, and the color-naming test. Testing and diagnosis for<unk>  is often incomplete and misdiagnosed in doctor’s offices. Remarkably, almost 50% of tested patients diagnosed with<unk>  are able to perform normally on the color-naming test. However, these results are somewhat in question because of the sources from which many of these reports come. Only 29% of<unk>  patients successfully pass the Ishihara plate test, which is a more accepted and more standardized test for color blindness. Difference from congenital<unk>  The most apparent distinguishing characteristic between congenital<unk>  and<unk>  is the sudden onset of color vision loss following a severe head injury or damage to the occipital lobe following a stroke or similar ischemic event. Non-invasive imaging techniques can be the most helpful in determining whether the area of damage following a traumatic event is an correlated with color-vision processing. Simple diagnostic tools can also be used to determine whether a patient is a likely candidate for further testing, as advancing imaging procedures can often prove expensive and unnecessary. Co-morbid factors can be valuable indicators of the likelihood of<unk> . One disorder often seen alongside<unk>  is prosopagnosia, the inability to recall or recognize faces. The correlation is still the subject of ongoing research, but the most telltale clue in this association is the close proximity of brain lesions seen in prosopagnosics and<unk> cs without prosopagnosia. Figure 1 illustrates overlap of brain lesions compiled from numerous case reports of both disorders. A common area of damage associated with both disorders can be seen in the right occipital lobe.
Cerebral achromatopsia
Amblyaudia
Congenital mirror movement disorder
Homonymous hemianopsia
Binasal hemianopsia
Dysbarism
Paraphrenia
Fibular hemimelia