Whats the difference between azelastine and fluticasone nasal spray? does both medication increase chances of cataracts in the eyes? is one safer than the other?

Azelastine is an antihistamine and fluticasone is a steroid. Fluticasone has a potential to induce cataract when used for a prolonged period. However, such risk potential for fluticasone spray is still very low.

For chronic allergies, azelastine is a lot safer. Fluticasone is a potent steroid that should not be used for more than six weeks continuously. The risk for cataract is lifetime and the risk of glaucoma from steroid responsive intraocular pressure elevation is real and can lead to permanent vision loss. The same is true for mometasone.