Prefrin eye drops are used to reduce eye redness caused by constricted blood vessels and soothe irritation caused by allergies or exposure to dust and wind. They contain an active ingredient that constricts small blood vessels inside the eye, which reduces redness and provides comfort and rapid relief from symptoms. Prefrin eye drops are used in cases of allergic conjunctivitis and temporary redness of the eye. They are placed inside the eye after washing your hands well, avoiding touching the tip of the dropper to the eye to keep the solution clean. You must adhere to the dose prescribed by your doctor and not use Prefrin for long periods to avoid complications. Use the medicine with caution to ensure eye safety and achieve the best possible results.