A lot of times people apply eyedrops in the eye the wrong way ending up using the wrong dosage or plain wasting it.
(Note that it's best to get eyedrops by prescription/physician's order and not over the counter for random use!)
If applying drops wrongly you either end up not using enough or (in an attempt to makeup for the wasted drops) over use it and this happens when clueless about application.
For when you have to use eyedrops, learn how to use it correctly so it works well for you.
1. Angle/Tilt the head backwards.
2. Use the index finger to gently pull the lower lid down
3. Look up and gently squeeze the drop around the space created by the lower lid (the area gently pulled by the index finger)
4. Keep the eyes closed for about four minutes after applying the drops (without blinking).
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Note that when using eyedrops:
The hands should be clean
The dropper (tip of the eyedrop container) should be clean and kept clean at all times
The dropper shouldn't touch the eye or any part of the face
When using more than one drop in each eye, wait for about five minutes before using the next drop!