Uncomfortable Contact Lenses and Eyelid Bacteria: What a Small Light-Therapy Trial Found

Contact lens discomfort is one of the most common reasons people stop wearing lenses. Dryness, burning, and lenses that feel fine in the morning but scratchy by afternoon are frequent complaints. One possible contributor is the eyelid margin, where oil glands and bacteria live. A small randomized trial from Australia looked at whether intense pulsed light (IPL), a treatment used for eyelid oil-gland problems, changes the bacteria on the lids of uncomfortable lens wearers.

How the trial worked

Researchers at the University of New South Wales in Sydney enrolled contact lens wearers with significant discomfort on a standard questionnaire. Participants received two IPL sessions or two sham sessions, three weeks apart. In the sham group, a torch simulated the light while the IPL device stayed off. Both groups had their meibomian (oil) glands expressed after each session. Swabs of the eyelid margin were taken at the start, at day 42, and at day 90. Neither participants nor assessors knew who received real treatment.

What they found

• Eighteen lens wearers completed the study: 10 in the IPL group and 8 in the sham group.
• In the IPL group, counts of several common lid bacteria, including coagulase-negative staphylococci, dropped significantly by day 42.
• By day 90, bacteria counts had partly rebounded toward the starting levels.
• The sham group showed no significant change at any time point.

What it means

The authors concluded that IPL reduced eyelid bacteria after two sessions, but the effect faded by three months, so lasting benefit may require adjusted treatment schedules. This was a very small study, and it measured bacteria, not whether lenses felt more comfortable in daily life.

Practical steps for uncomfortable lens wearers

• Follow your replacement schedule and never sleep in lenses unless they are prescribed for it.
• Clean your eyelid margins gently and use warm compresses if your eye doctor recommends them.
• Ask about different lens materials or daily disposables.
• If your eyes stay red or uncomfortable, take the lenses out and get an exam; lid disease and dry eye are treatable.

For more plain-language reading on eye health, see piineye.com.

Source: The effect of Intense Pulsed Light therapy on eyelid bacterial load in contact lens discomfort (Contact Lens and Anterior Eye (PubMed), 10/2026). This article is an educational summary written by Khanna Vision Institute and is not a substitute for medical advice.