What is the classification of Achromatopsia?

April 21 22:55 2019 Print This Article

They are mainly classified as acquired and congenital forms. The acquired form is known as the cerebral achromatopsia. The congenital achromatopsia is further divided into the complete and incomplete forms. They are known as the typical and atypical achromatopsia.

The achromatopia means the complete absence of perception of color in a subject. The amblyopia was defined by the Duke elder in the year 1937. It is defined as the monocular acuity deficit which is not due to the organic disturbances and refractive error. It is a neural condition in which there is a poor spatial performance of optical servomechanism of eyes at the normal illumination levels. There is no morphological cause for it. It leads to the lazy eye. There is a reduced visual capacity in the bright light which is referred as a hemeralopia. It is also known as the day blindness.

The nystagmus refers to the normal as well as pathological conditions which are in linked with the occulomotor system. In this there is an uncontrolled oscillatory movement of the eye in which the amplitude of oscillation is noticed and the frequency of the oscillation is very low. It is considered to be a pathological condition. The photophobia refers to the avoidance of bright light by the patients suffering from hemeralopia.

  Article "tagged" as: