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Observed the elderly and the visually impaired to use eye drops,Following them very inconvenient to use:
1.Can not aligned position.
2.can not take the appropriate distance.
3.Will be contaminated with dust in the air.
4.Eyes will overflow syrup.
5.Need to be softened by hand to eye.
National Yunlin University of Science and Technology
Douliou, Yunlin, Taiwan