Should I Finish My Remaining Eye Dilating Drops? - Ophthalmology

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Is it appropriate to administer mydriatic agents again?


Hello Dr.
Chuang, I am currently a sophomore student.
I used to have excellent vision during elementary school, but around March 2007, during my second year of junior high, I developed myopia in one eye due to improper computer use.
Later, in December 2008, I visited an ophthalmologist who prescribed a long-acting mydriatic agent for me to use.
I used about four-fifths of the bottle, and although my vision did not significantly improve, it has not worsened since then.
Now, I have the remaining one-fifth of the bottle from four years ago.
Should I finish using it, or is it better for my eyes not to use it? Thank you, doctor.

Ya Ming, 20~29 year old female. Ask Date: 2013/05/14

Dr. Zhuang Yamin reply Ophthalmology


Dear Ah-Ming,
Hello! First of all, it is not recommended to use any opened eye drops after 1 to 2 months to avoid concerns about deterioration.
Furthermore, considering your current age, your prescription should not change significantly, so you can safely discard the previous eye drops.
Please do not use them again for your eyes!
Wishing you good health,
Changhua Hospital, Department of Health

Reply Date: 2013/05/14

More Info


When it comes to the use of eye dilating drops, especially after a significant period of time since they were first prescribed, there are several factors to consider. First and foremost, it's essential to understand the purpose of these drops. Eye dilating drops are typically used to widen the pupil, allowing the eye doctor to get a better view of the retina and other internal structures during an examination. They can also be used therapeutically in certain conditions, but their long-term use is generally not recommended without specific guidance from an eye care professional.

In your case, since you mentioned that you have about one-fifth of a bottle left from four years ago, it is crucial to consider the following points:
1. Expiration Date: Medications, including eye drops, have expiration dates for a reason. Using expired medications can lead to ineffective treatment or, worse, potential harm. Check the expiration date on your bottle. If it has expired, it is best to dispose of it safely rather than using it.

2. Storage Conditions: Eye drops should be stored according to the manufacturer's instructions. If the drops were not stored properly (for example, if they were exposed to extreme temperatures), their efficacy could be compromised.

3. Consult Your Eye Care Professional: Since you have not used the drops in a while, and considering your history of eye health, it would be prudent to consult with your eye doctor before using the remaining drops. They can provide personalized advice based on your current eye health status and any changes that may have occurred since your last visit.

4. Potential Side Effects: While dilating drops are generally safe when used as directed, they can cause temporary side effects such as light sensitivity, blurred vision, and difficulty focusing. If you have any concerns about these effects or if you experience any unusual symptoms, it is best to avoid using the drops until you have consulted with your doctor.

5. Current Eye Health: Since you mentioned that your vision has not worsened since you started using the drops, it is essential to consider your current eye health. If you have any new symptoms or concerns, such as discomfort, changes in vision, or eye strain, these should be discussed with your eye care provider.

In summary, while it might be tempting to finish the remaining eye dilating drops, it is advisable to consult with your eye care professional first. They can assess whether it is appropriate for you to use the drops again, considering their expiration, your current eye health, and any potential risks involved. If you have not had a comprehensive eye exam recently, it might be a good idea to schedule one to ensure that your eyes are healthy and to discuss any ongoing concerns you may have about your vision and eye care.

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