Wash your hands before you use the drops.
Remove the cap from the bottle (or the tip of the unit if you are using a single-use unit).
Tilt your head back a little and pull the lower lid of your eye downwards to form a pocket.
Hold the bottle (or single-use unit) upside down near to your eye. Try not to touch your eye as you do this.
Apply enough pressure to release one drop into your eye. Only use a second drop if the first drop missed going into your eye.
Close your eye for a minute or two, and press gently on the side of your nose where the corner of your eye meets your nose. This helps to stop the drop from draining away and keeps it in your eye.
Repeat the process in your other eye if both eyes are affected.
Replace the cap (or if you are using a single-use unit, throw the used unit away).