Can you use lubricant eye drop like visine tears, dry eye relief as long as you want? or they are same as decongestant drops? does lubricant eye drops help clearing allergens?

Tears: Make sure additive free and more like a natural tear saline solution.

Artificial tear yes: You can use artificial tear without an active medication for as long and as frequent as you want if it contains no preservative (single-use). If it does contain a preservative (multi-use) then using the drop more than 4 times daily may induce corneal edema. Artificial tear may reduce eye allergy symptoms by rinsing off the allergens and mediator and is not a vascular decongestant.