- Dichromasia reasons
- Dichromasia symptoms
- Treatment of a dichromasia
Dichromasia (dichromasia; di - + Greek chroma color) - inborn disturbance of color sight at which there is no function of one of three tsvetooshchushchayushchy devices.
It is the congenital anomaly which is found preferential at males.
Inability to distinguish shades of flowers. Krasnopurpurny shades which mix up bichromates with dark brown and violet, and flavovirent tone which bichromates confuse with pink and light-purple are usually especially difficult distinguished. The blindness on green color — a deuteranopia while the blindness on red color — a protanopia — is characterized by mistakes in recognition of dark, red and purple tones gives the last type of mistakes.
Anomaly has resistant character.
In most cases does not represent difficulties when using of Rabkin's tables or other. In doubtful cases the research the anomalscope is necessary. If the examinee equates spectral red or spectral green tone to yellow orange control tone (according to the spectral line of sodium), existence of a dichromasia can be considered established.
Treatment of a dichromasia:
No ways of prevention and treatment of an inborn dichromasia exist yet. For simplification of recognition of flowers by the persons suffering from this anomaly use of a special tinted spectacles is recommended.