Benefits:
Thoroughly cleanses the eye
Relieves tension and strain in the eye
Soothes sore and teary eyes
Useful for treating myopia, presbyopia hypermetropia, and headache
Improves your eyesight 
Increase blood supply to the eyes
Diminish the look for dark circles by increasing blood circulation around the eyes 
Helpful for tired or puffy eyes
Reduces irritation of the eyes
Eliminates redness of eyes and watering of eyes
Relieves headache caused due to problems with the eyes or stressed eyes

Instructions:
First, make sure your eyewash cup has been appropriately cleaned.
Then, fill the cup with clean water or a solution. If you are using anything other than water, consult your physician before use.
Next, you will bring the cup to your eye. It helps to have a cup with a stand, as this is easier to hold between your fingers. Make sure your eye is shut as you bring it towards the cup.
Once the eyewash cup is securely fitted around your eye, blink your eye and swish the wash cup to allow the water or solution to properly and completely clean the eye.
 

Eye bath cups remove dust particles and flush loose foreign objects, chlorine, pollen, and other irritants. Eyewash cups are used to clean, refresh, or soothe the eyes. It is great to have one readily available for daily use or an emergency eye cleansing.