Using lubricant eye drops like Systane Ultra or Refresh Tears daily is generally very safe, even for years. They do not have serious long-term side effects. However, because both contain mild preservatives, using them more than four times a day over many years can sometimes cause slight irritation. If you need them very frequently, switching to preservative-free individual vials of either brand is a gentler option. Neither brand is universally 'better'?Refresh Tears uses a different lubricant (carboxymethylcellulose) than Systane Ultra, so it comes down to which one feels most comfortable in your eyes.

It sounds like your son is experiencing severe digital eye strain, often linked to prolonged computer use and potentially an incorrect reading glasses prescription. This strain can trigger migraine headaches and intense burning, even if his vision seems normal. Since over-the-counter lubricants like Refresh Tears or Softdrops pm aren't helping, he may need a comprehensive eye exam to check his prescription and evaluate for dry eye disease. In the meantime, practicing the 20-20-20 rule?looking 20 feet away for 20 seconds every 20 minutes?and using a warm compress can offer some comfort.

Since your basic eye exam was normal and Refresh Tears did not provide relief, your symptoms might stem from deep ocular surface dryness, nerve-related sensitivity, or mild muscle spasms around the eyes. I highly recommend scheduling an appointment with a specialist, such as a neuro-ophthalmologist or a dry eye expert, for a more targeted evaluation. In the meantime, wearing polarized, wrap-around sunglasses can help protect your eyes and keep you comfortable while driving.

It is completely safe and non-habit-forming to continue using Refresh Tears (carboxymethylcellulose) three times a day. These lubricating drops do not cause dependency. The crusty residue you wake up with is harmless and simply the dried lubricant on your lashes. You can gently wipe it away with a warm, damp washcloth. Since you are using them long-term, switching to preservative-free artificial tears can be gentler on your eyes to avoid mild irritation, but your current routine is safe. Rest assured, this is very common, but please consult an eye specialist if you experience any pain or vision changes.

This flickering is usually a harmless muscle spasm called eyelid myokymia. Even with sleep, it can be triggered by stress, caffeine, or digital eye strain. Your lubricating drops are a great step, as dry eyes can also contribute. Try applying a warm compress to your eyelid and reducing caffeine intake. While typically benign and self-limiting, if the twitching continues for several more weeks, spreads to other facial muscles, or causes your eye to fully close, please consult an eye specialist for a proper checkup.

Use lubricating eye drops without preservatives for dry, irritated eyes, and take frequent breaks from screens to lessen strain. If your dry eyes continue or get worse, stay hydrated, refrain from rubbing them, and consult an eye doctor.