Deep research and expert guides on maintaining your visual health.
Dry Eye & Glaucoma: Fix the Surface, Fix the Tests Persistent dryness and irritation of the eye surface—often called dry eye disease or ocular surface disease—is very common in people with glaucoma (especially those using eye drops). This surface problem can blur vision, make you blink more, and change the way your eyes see light. That in turn can throw off glaucoma tests. For example, a frustrate...
Preservative-free drops are eye drop solutions made without the antimicrobial chemicals that keep multi-dose bottles free from contamination. Because they lack these preservatives, they are usually sold in single-use vials or in specially designed multi-dose containers that prevent backflow and contamination. Preservatives in some eye drops can cause stinging, redness, or long-term damage to the surface of the eye when drops are used many times a day, so preservative-free options reduce the risk of those side effects. These preparations are especially helpful for people with chronic dry eye, inflamed ocular surfaces, contact lens sensitivity, or after eye surgery because they deliver lubrication or medication without preservative-related irritation. They come in forms ranging from simple artificial tears to thicker lubricating gels and prescription formulations for more severe conditions. The trade-offs include higher cost and more packaging waste, and single-use vials must be used once and discarded to avoid contamination. Many preservative-free options are available over the counter, while stronger prescription versions can be prescribed when needed. An eye care professional can help you choose the right preservative-free product and dosing schedule for your situation.
