Antibiotic Eye Drops Side Effects: What’s the Long-Term Risk?

Baptist Eye Surgeons • February 9, 2022

All medications can have side effects. However, side effects that can impact eyesight may cause you to feel a bit more concerned. After all, you need to see and don’t want your prescription eye drops to affect your vision. You’re likely wondering if antibiotic eye drops’ side effects can have a long-term effect on your vision.

A man with a beard is applying eye drops to his eye.

Antibiotic eye drops are intended to be used for as long as an infection is present, so you don’t have to worry about long-term side effects if you’re using them as prescribed. You also don’t have to worry about getting sick from your eye drops, although other side effects are possible in rare cases. For the best results, follow your doctor’s instructions carefully when applying the drops in your eyes.

Are There Long-Term Risks for Antibiotic Eye Drops?

There are few, if any, long-term risks involved with antibiotic eye drops ( ophthalmic solution eye drops ). This is due to the fact that they’re only intended to be used for the duration of the infection or for the prevention of one. Prescribing antibiotic eye drops as a short-term solution helps guarantee that you’ll never use them for too long.

Let’s use ofloxacin as an example. Ofloxacin eye drops are commonly prescribed to adults and children to treat eye infections such as pink eye. Patients often use them for about a week, but never longer than 10 days. This means that you’ll never use them for a long period of time, ensuring that there are no long-term side effects.

The best way to avoid any side effects of antibiotic eye drops is to follow the recommendations of your eye doctor or pharmacist. They will be able to advise you on how to apply eye drops, how many times a day to use them, and when to stop taking them. You should also read the prescription label to make sure you’re using them correctly.

Click here to learn more about pink eye and when antibiotic eye drops may be necessary for treatment!  

Common Questions About Antibiotic Eye Drops Side Effects

Questions about antibiotic eye drops side effects can range from those based in reality to those only found in urban legends. You need to know how to tell the difference between fact and fiction so you don’t put off getting the treatment that you need. This will also help you recognize a real emergency so that you can call your doctor.

Can Antibiotic Eye Drops Cause Diarrhea?

*WARNING: ANTIBIOTIC EYE DROPS SHOULD NEVER BE INGESTED*

In short, no , antibiotic eye drops don’t cause diarrhea. This fear stems from an urban legend that consuming Visine will cause bowel issues. Unfortunately, the effects of Visine consumption can be much worse. As Amy Silverstein reports, consuming Visine can lead to:

  • Tremors
  • Coma
  • Seizures

This is why it’s important to talk to your doctor about the side effects of eye medication and follow directions to the letter.

Can Antibiotic Eye Drops Cause an Upset Stomach?

A woman is smiling while holding a bottle of eye drops in her hand.

While not an urban legend, this is a fairly common misconception about antibiotic eye drops side effects. Fortunately, it’s not true . On the other hand, some people are more sensitive than others to them. 

Those with a sensitivity to antibiotic eye drops may experience:

  • Redness
  • Sensitivity to light
  • Pain

Stop taking the eye drops if you experience these side effects and contact your ophthalmologist immediately. They will be able to instruct you on how to alleviate your discomfort and come up with an alternative plan for treatment.

Can Antibiotic Eye Drops Cause Blurry Vision?

This side effect is possible, although usually rare. There are many different types of antibiotic eye drops and their side effects can vary. With that said, it helps to know the common and even rare side effects.

Let’s look at ofloxacin again as an example, which is often prescribed to treat corneal ulcers along with pink eye. According to the National Library of Medicine , blurred vision is an uncommon side effect along with:

  • Irritation
  • Tearing
  • Dryness

Talk to your eye doctor about common and even rare side effects of your antibiotic eye drops. This will alert you that something is wrong and discontinue using it until you have a chance to speak with your eye care team.

To learn more about corneal ulcers and how they’re treated, click here !

How to Apply Antibiotic Eye Drops

Whether they’re for allergies, tear production, or fighting a bacterial infection, it’s important to know how to correctly apply eye drops. As always, follow your doctor’s instructions and read the label before using them .

  1. Wash your hands
  2. If you wear contact lenses then take them out
  3. Remove the cap without touching the dropper tip to avoid contamination
  4. Tilt your head back and look up, fixing your eyes on a specific point
  5. With one hand, pull down the eyelid of the affected eye
  6. Without touching the dropper to your eye, squeeze the dropper gently and let the drops fall into your eyes

Ask your eye doctor if you have any questions or concerns. They will be able to help you use your antibiotic eye drops safely and effectively.

Do you have an eye infection that requires treatment? Contact us today to schedule your appointment! 

You shouldn’t have to worry about the effects of using antibiotic eye drops for long periods since they are only used for as long as you have an infection. While blurry vision is a rare side effect, concerns about other health issues from antibiotic eye drops are largely urban myths. Make sure to apply the drops correctly to avoid contamination and reap the rewards of treatment.

Baptist Eye Surgeons is an ophthalmological practice in Knoxville, TN, and Morristown, TN. Give us a call at 865-579-3920 for more information or to schedule an appointment .

June 30, 2026
Night vision problems can make everyday activities like driving at dusk, walking in poorly lit places, or adjusting to indoor lighting harder and sometimes unsafe. Trouble seeing in low light, called nyctalopia, is not a disease itself but a sign that something else may be affecting your eyes. Learning what causes night vision problems and when to get help is important for keeping your vision healthy. What Are Night Vision Problems? Night vision problems mean it is hard to see clearly in low light or darkness. Some people notice their eyes take longer to adjust when going from bright to dim places. Others may have trouble with glare from headlights, seeing less contrast, or things just looking dimmer at night. Mild changes in night vision can happen as you get older, but if your symptoms keep getting worse or do not go away, you should pay attention to them. Common Causes of Night Vision Difficulties There are several potential causes of night vision problems. Night vision problems can have many causes, from getting older to certain eye conditions, such as lens problems, leading to blurred vision and increased sensitivity to glare. They are one of the most common causes of poor night vision, especially in older adults. 1. Cataracts Cataracts cause clouding of the eye’s natural lens, leading to blurred vision and increased sensitivity to glare. They are one of the most common causes of poor night vision, especially in older adults. 2. Vitamin A Deficiency Vitamin A is important for keeping your retina healthy. If you do not get enough vitamin A, your eyes may have trouble adjusting to darkness, which can lead to night blindness. 3. Glaucoma Some types of glaucoma can affect your side vision and make it harder to see differences between light and dark. As the optic nerve gets damaged, seeing in low light can become more difficult. 4. Retinitis Pigmentosa This inherited eye condition slowly affects your ability to see at night and to the sides. Early signs often include trouble seeing in the dark. 5. Diabetes-Related Eye Disease Diabetic retinopathy can harm the blood vessels in your retina, which may cause blurry vision and make it harder to see at night. 6. Aging and Pupil Changes As people get older, their pupils do not react to light changes as quickly, and the retina becomes less sensitive. This naturally makes night vision worse over time. Symptoms to Watch For Night vision problems often develop slowly. Some common signs are: Difficulty seeing in low light or darkness Trouble driving at night due to glare from headlights Longer adjustment time when moving between light and dark environments Reduced contrast or clarity in dim settings Frequent squinting or eye strain in low light If these symptoms start to affect your daily life, it is a good idea to get a full eye check-up. When to See an Eye Doctor You should see an eye doctor if you notice new night vision problems, if they are getting worse, or if you have other changes in your vision. The doctor can run tests to find out what is causing the problem and suggest the right treatment. A full eye exam might include checking your retina, testing your field of vision, and taking images to look at your eye health. Finding problems early is very important for conditions like glaucoma, diabetic eye disease, and retinal disorders, because early treatment can help protect your vision. Protecting Your Night Vision Not all causes of night vision loss can be prevented, but taking care of your eyes can lower your risk and help you see better. Some helpful steps are: Scheduling regular eye exams Handling chronic health conditions like diabetes Eating a diet rich in vitamin A and antioxidants Wearing proper corrective lenses if prescribed Avoiding driving with untreated vision changes Prioritizing Your Eye Health Night vision problems can be an early sign of eye disease. Since many eye problems develop slowly, having regular eye exams is one of the best ways to catch changes early and keep your vision healthy for the long term. If you have trouble seeing at night or notice any changes in your vision, making an appointment for an eye exam can help keep your eyes healthy and your vision clear in all types of light.
Understanding Eye Pressure: What It Means for Glaucoma Risk
June 1, 2026
Understanding eye pressure, or intraocular pressure (IOP), is important for protecting your vision. IOP considerably affects the development and progression...
How Your Diet Impacts Eye Health: Foods That Support Vision
April 12, 2026
Your diet influences more than just general wellness; it also helps protect your eyesight. At Baptist Eye Surgeons, we take a forward-looking approach to eye...