Amaurosis is derived from Greek word darkening or dark it is vision loss or weakness without an apparent lesion affecting the eye may result from the medical condition or from acceleration as in light. The lesion is the same as the Latin gutta serena  types: Cong lebers amauross    Amaurosis fugax with quinine  Cong Leber amaurosis is an inherited disease resulting in optic atrophy and sec visual loss and blindness  was first described by Leber in the 19th century     Amaurosis fugax is a temporary periodic loss of vision may be due to posture person lying down when getting up suddenly may feel amaurosis fugax,  p vascular diseases, embolism of  RA or embolism of carotid artery, may also result from mitral valve repair from where emboli may break away from the site of repair    3   quinine amaurosis is also known.

Risk factors for amaurosis are   Stroke  Hypertension   Diabetes Smoking…