hemianopsiaWiktionary 原文构词拆分hemi-前缀Half.+an-前缀Alternative form of on-.+-opsia后缀(ophthalmology) Forming compound nouns denoting specific deficiencies of sight. [from 19th c.]词源说明From hemi- + an- + -opsia.释义（英文）名词 Noun(ophthalmology) Blindness in one half of the field of vision of either or both eyes.词族派生词（1）hemianopsic