Common Myths About Eye Drops
Eye drops may look simple, but they are highly specific products. Different formulas are designed for different eye concerns, and using the wrong drops can irritate the eyes, mask symptoms, or delay proper treatment. Eye drops should be used based on need, not habit.
Myth 1
Myth 2
Once opened, eye drops can be used any time
All eye drops are safe
Not all eye drops are meant for regular use. Some redness-relief drops contain vasoconstrictors, which temporarily narrow blood vessels on the eye surface to make the eyes look less red. However, in people with narrow eye drainage angles, these drops may dilate the pupils and block fluid drain- age, causing eye pressure to rise dangerously. Redness-relief drops are for short-term use only. If redness continues, returns often, or is linked with eye pain or vision changes, see an ophthalmologist.
Eye drops should not be used indefinitely after opening. Bottles, tips, and solutions can become contaminated, especially if the dropper touches the eye, eyelashes, hands, or any surface. Some eye drops also need to be stored in a cool place or under specific conditions. Always check the label for the discard date and storage instructions, replace the cap after use, and avoid sharing eye drops with others.
Myth 3
Myth 4
Preservatives in eye drops do not matter
Lubricating drops may provide temporary comfort, but they do not cure the underlying cause of dry eye. Severe, constant, or recurring dryness should be checked by an ophthalmologist rather than managed only with basic drops. Over-the-counter drops can cure dry eye
Preservatives help prevent bacterial growth in multi-use bottles, but they can irritate the eyes if drops are used frequently. People who need artificial tears more than four times a day may benefit from preserva- tive-free formulations.
At Bumrungrad Eye Excellence Center , ophthalmologists can identify the cause of eye symptoms and recommend safe, appropriate treatment. Bumrungrad pharmacists also play an important role by clearly explaining how prescribed eye drops should be used and stored, helping patients use their medication correctly and safely.
Bumrungrad Eye Excellence Center
12 Issue: August 2026
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