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1、眼睛有哪些视觉功能? 答:眼的视觉功能有视力、视野、光觉、色觉与立体视觉。 2、什么是视野? 答:视野是当人们前看时所能见到的空间范围。正常视野内侧约60°,上方约49°,外侧约93°,下方约65°。 3、什么叫低视力?答:低视力一般指双眼最佳矫正视力在0.05-0.3者,如一眼矫正视力大于0.3或双眼矫正视力小于0.05者都不能算是低视力。 4、什么是虹视?出现虹视的现象有哪些原因? 答:当看电灯泡时,有红、绿彩色环圈围绕,似彩虹
1, What are the visual functions of the eyes? A: The visual function of the eyes have vision, vision, light perception, color vision and stereoscopic vision. 2, What is the field of vision? A: The field of view is the range of space that can be seen when people look in front. The normal field of view is about 60 ° inside, about 49 ° above, about 93 ° outside and about 65 ° below. 3, What is low vision? A: Low vision generally refers to the best corrected eyesight in the eyes of 0.05-0.3, such as a corrected visual acuity greater than 0.3 or eyes corrected visual acuity of less than 0.05 who can not be considered as low vision. 4, What is the rainbow? What is the phenomenon of rainbow? A: When looking at the light bulb, there are red and green colored circles around, like a rainbow