There is agnosia and agnosia is a disorder which isn't blindness because the person could still see perfectly well.

还有失认症,失认症并非失明,因为患者的视觉没有任何问题

耶鲁公开课 - 心理学导论课程节选

It seems that computer technology is vital in making visual effects. What if we didn't have it?

好像计算机技术对视觉特效很有用。要是没有这个我们会怎么样？

没有特效的话 - SpeakingMax英语口语达人