Hemianopsia, also known as hemiopia, is a medical condition that results in partial or total blindness in one half of the visual field. There are several other synonyms for this condition that are used interchangeably depending on the context. These synonyms include homonymous hemianopsia, hemi-blindness, half-vision, unilateral visual loss, and heminopia. These terms all refer to the same condition but may be used by different healthcare professionals or in different regions. Regardless of the terminology used, hemianopsia is a serious condition that requires medical treatment and management to prevent further vision loss and improve quality of life.