The drop I recommend the most for athletes with allergies that affect their eye is Zaditor. It was originally a prescription drop and is now found over the counter (similar to the oral allergy medications, Allegra and Claritin). This drop is an antihistamine and mast cell inhibitor which means it stops the allergic response in two different ways.
I instruct athletes to avoid drops with whitening agents stay away from drops, such as Visine, because they have an ingredient that contricts blood vessels. This medication can actually cause a mild dilation of the pupils when used in larger amounts (or if the active ingredient as expired) and that dilation of the pupils can interfere with how well the athlete sees when playing their sport.
I recommend starting the Zaditor when the ocular symptoms start, instill one drop twice a day and use at least for a 2 week period.
For contact lens wearing athletes, you can instill one drop first thing in the morning, wait 15 minutes and then put in your contacts. The second drop can be used in the evening after you have taken out your contacts (do not use the drops directly on the contact lenses).
This drop can be used for extended periods of time and has little to no side effects to the body and eyes.
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