Choosing the Right Eye Pressure Medication: Alphagan vs. Aisuhua - Ophthalmology

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Inquiry about eye pressure-lowering eye drops?


Hello, Doctor Gao.
In mid-November last year, I was diagnosed with early-stage glaucoma at an ophthalmology clinic after a series of intraocular pressure and visual field tests.
Once the condition was confirmed, the doctor prescribed Alphagan (5ml, green bottle with purple cap) for chronic use to lower intraocular pressure, to be administered twice daily.
Three months ago, I underwent laser surgery for myopia, which resulted in severe dry eyes.
During each follow-up visit after the laser surgery, my intraocular pressure readings were 11/12 in both eyes.
After three months of using Alphagan, the doctor switched my medication to Alcon's Iopidine eye drops.
However, after starting the new medication, I experienced a stinging sensation in my eyes.
When I informed the doctor, he said this was a normal reaction and that the new medication is more effective than the old one.

My question is, since both medications are intended to lower intraocular pressure, can I continue using Alphagan (which does not cause discomfort) instead of switching to the new Iopidine, or should I adapt to the stinging sensation from the new medication? Which of these two medications is more effective for lowering intraocular pressure, or should I simply choose the one that feels more comfortable for me? Thank you.

STEVEN, 40~49 year old female. Ask Date: 2016/02/26

Dr. Gao Pilin reply Ophthalmology


Hello Steven: Actually, both can be managed well if controlled properly.
Some may cause a tingling sensation, but they should be harmless.
If you are concerned, you can seek a second opinion from another physician.
In Taiwan, the Department of Ophthalmology at Puzi Hospital is open Monday to Friday from 8:00 AM to 12:00 PM and Wednesday afternoons from 1:00 PM to 4:30 PM.
Online responses should only be used as a reference; it is still necessary to visit a medical institution for treatment.
I hope to have the opportunity to serve you.
Gao Pilin

Reply Date: 2016/02/26

More Info


When it comes to managing glaucoma and choosing the right eye pressure medication, it is essential to consider both the efficacy of the medication and the patient's comfort. In your case, you have been prescribed two different medications: Alphagan (Brimonidine) and Aisuhua (Brinzolamide). Both of these medications are designed to lower intraocular pressure (IOP), but they work through different mechanisms and may have varying side effects.

Alphagan is an alpha-2 adrenergic agonist that reduces aqueous humor production and increases uveoscleral outflow, which helps lower IOP. It is often well-tolerated, but some patients may experience side effects such as dry mouth, fatigue, or, in your case, discomfort upon instillation. On the other hand, Aisuhua is a carbonic anhydrase inhibitor that decreases the production of aqueous humor, thereby lowering IOP. It can sometimes cause stinging or burning sensations upon application, which you have experienced.

Your doctor mentioned that the stinging sensation with Aisuhua is a normal reaction and that the new medication may be more effective than Alphagan. It is not uncommon for patients to experience some discomfort when switching medications, especially with those that have a different formulation or active ingredients. However, the key question is whether the discomfort is tolerable and whether the medication effectively manages your IOP.

In terms of efficacy, both medications can be effective in lowering IOP, but individual responses can vary. Some patients may find one medication works better for them than another, while others may tolerate one better than the other. It is crucial to monitor your IOP regularly and assess whether the new medication is achieving the desired results. If your IOP remains well-controlled with Alphagan and you do not experience discomfort, it may be reasonable to continue using it. However, if Aisuhua provides better control despite the initial discomfort, it may be worth adapting to it.

Ultimately, the choice between continuing with Alphagan or adapting to Aisuhua should be made in consultation with your ophthalmologist. They can provide guidance based on your specific situation, including your IOP readings, any side effects you experience, and your overall comfort with the medication. If the discomfort with Aisuhua persists and significantly impacts your quality of life, it may be worth discussing alternative medications or formulations that could provide effective IOP control without the side effects.

In summary, both Alphagan and Aisuhua are valid options for managing IOP in glaucoma patients. The decision should be based on a combination of efficacy, side effects, and personal comfort. Regular follow-ups with your ophthalmologist will ensure that your treatment plan remains effective and that any necessary adjustments can be made promptly. Remember, managing glaucoma is a long-term commitment, and finding the right medication is crucial for maintaining your eye health and preventing vision loss.

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