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When I try to use the eyedrops, I found it is easy to hurt the eyes or to drop the eyedrops at the wrong places. Then, I remember one day when I saw the shape of an arch bridge, I came up with an inspiration: why all the bottles for the eyedrops are all with the convex shape? Why not try to use the concave shape?
I found that the bottle with concave shape will protect the eyes form being hurt. The two bulges, which look like the support of the arch bridge, can be placed onto the area of the face which is higher and lower than the eye so that the location for the bottle to be used can be easily found. So it's easy to drop into the eye.
Hubei University of Technology
Xiaohan Liu Min Li