Are Contact Lens Trials Safe? Risks of Infection and Hygiene Concerns

Please ask your question?

Hello, doctor: Today I went to an optical store to try on contact lenses.
After trying them on, I noticed that the staff put the trial lenses back into the container and only soaked them in saline solution before storing them away, which felt very unsanitary (I really regret it).
I wonder how many people tried them on before me, and they probably didn't do any disinfection before letting others try them (it feels like sharing a toothbrush).
Therefore, I would like to ask if there are any infectious diseases that could be transmitted through this method.
For example, 1.
Is there a possibility of someone with a ruptured microcapillary in their eye transmitting something to the next person? 2.
Could this lead to infections transmitted through bodily fluids or blood, resulting in diseases such as Hepatitis B or HIV/AIDS? Thank you for taking the time to answer!

P, 20~29 year old female. Ask Date: 2006/03/10

Dr. Xu Li'an reply Family Medicine

The risk of transmitting bloodborne infectious diseases through trying on contact lenses is very low; however, the likelihood of contracting acute conjunctivitis and influenza is comparatively higher.
Typically, individuals with ruptured microcapillaries in their eyes do not wear contact lenses.
In the future, avoid that location or request that they clean the lenses in front of you during the trial.
There’s no need to worry too much.
If you experience any discomfort in your eyes over the next few days, please visit an ophthalmology clinic for examination and treatment.
When you enter any public space, if the person before you coughs or sneezes, you are more likely to contract airborne diseases such as tuberculosis, influenza, SARS, or avian influenza, which are the real concerns.

Best regards,
Li-An Hsu, MD
Department of Family Medicine, Hualien Tzu Chi Hospital

Reply Date: 2006/03/10

More Info

When it comes to trying on contact lenses at an optical shop, there are indeed several hygiene concerns and risks of infection that should be taken into account. Your apprehension about the cleanliness of the trial lenses is valid, as improper handling and sanitation can lead to serious eye infections and other health issues.

Firstly, contact lenses are medical devices that sit directly on the eye, and any contamination can pose a risk. The primary concern is the transmission of pathogens, which can lead to infections such as bacterial keratitis, viral conjunctivitis, or even fungal infections. These infections can result from bacteria or viruses that may be present on the lenses if they are not properly cleaned and disinfected between uses.

1. Transmission of Infections: While the risk of transmitting bloodborne pathogens like Hepatitis B or HIV through contact lenses is low, it is not zero. The primary concern is more about bacterial and viral infections. For instance, if a previous user had an eye infection, the bacteria could potentially remain on the lens and infect the next user. Conditions such as conjunctivitis (pink eye) or keratitis can be transmitted this way. If someone has a ruptured blood vessel in their eye, while it is unlikely to transmit infections directly, any associated bacteria could still pose a risk.

2. Hygiene Practices: It is crucial for optical shops to adhere to strict hygiene protocols. This includes using appropriate disinfecting solutions and ensuring that lenses are cleaned after each use. Ideally, trial lenses should be disposed of after a single use, or at the very least, thoroughly disinfected before being reused. If you feel that the shop did not follow proper hygiene practices, it is advisable to report this to the management or seek services from a more reputable establishment.

3. Preventive Measures: To minimize the risk of infection when trying on contact lenses, consider the following:
- Always ask how the lenses are cleaned and disinfected before trying them on.

- If you have any concerns about the hygiene practices, do not hesitate to refuse to try on the lenses.

- After trying on lenses, wash your hands thoroughly and avoid touching your eyes until your hands are clean.

- If you experience any discomfort, redness, or changes in vision after trying on lenses, seek medical attention promptly.

In summary, while trying on contact lenses can be safe if proper hygiene practices are followed, there are significant risks associated with inadequate sanitation. It is essential to be vigilant and proactive about your eye health. If you have any further concerns or experience symptoms after trying on lenses, consult with an eye care professional for a thorough examination.

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