视力减弱用英文怎么说

视力减弱用英语可以说成 "vision impairment" 或 "visual impairment"。

来源：视力减弱指的是视觉能力减弱或丧失，可能由于各种原因引起，如眼病、老年性疾病、外伤等。

英文例句：

"He has a vision impairment that makes it difficult for him to read small print." (他有视力障碍，难以阅读小字体。)
"Her visual impairment makes it hard for her to navigate through unfamipar places." (她的视力障碍使她在陌生地方行走困难。)
"The organization works to improve access for people with vision impairment." (该组织致力于改善视力障碍者的出行条件。)

中文翻译：

"他有视力障碍，难以阅读小字体。"
"她的视力障碍使她在陌生地方行走困难。"
"该组织致力于改善视力障碍者的出行条件。"