Post-Surgery Eye Issues: Redness After Retinal Detachment and Cataract Surgery - Ophthalmology

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Retinal detachment + cataract


Hello doctor, I had retinal detachment surgery on my left eye, followed by cataract surgery a few months later.
It's been nearly six months since the surgeries, and I have been using eye drops prescribed by my doctor for lowering intraocular pressure and treating dry eye.
Recently, I've noticed that around 3 PM, my left eye starts to show prominent redness, and my right eye, which is still nearsighted, also exhibits redness.
Initially, I thought the redness in my left eye was due to hypoxia from wearing contact lenses in my right eye, but after trying not to wear contacts in my right eye, the redness in my left eye still appears around 3 PM, and both eyes show redness.
I visited a clinic, and they diagnosed it as eye allergies, but after using the prescribed medication for 1-2 weeks, there was no improvement.
I finally discovered that applying the intraocular pressure-lowering eye drops significantly reduces the redness within a few minutes.
Could you please advise if this is due to high intraocular pressure or if there are any postoperative complications?

Yu, 40~49 year old female. Ask Date: 2023/04/18

Dr. He Jianxian reply Ophthalmology


Hello Ms.
Yu: Redness in the eyes is primarily a response to discomfort in the eyes, and the underlying causes can vary.
Simple dry eyes can also lead to this reaction.
If you are concerned about elevated intraocular pressure at that moment, it is advisable not to apply any medication immediately.
Instead, you should go to an ophthalmologist to measure your intraocular pressure for confirmation.
Director He Jianxian, Ophthalmology Department, Nantou Hospital.

Reply Date: 2023/04/18

More Info


After undergoing retinal detachment surgery followed by cataract surgery, experiencing redness in the eyes can be concerning. The symptoms you describe, particularly the appearance of red blood vessels in your left eye around the same time each day, could be attributed to several factors, including elevated intraocular pressure (IOP), dryness, or even post-surgical complications.

Firstly, it's essential to understand that after surgeries like retinal detachment and cataract procedures, the eyes can undergo significant changes. These changes may include inflammation, which can lead to redness and discomfort. The redness you observe could be a result of conjunctival hyperemia, where the blood vessels in the conjunctiva (the clear membrane covering the white part of the eye) become engorged due to irritation or inflammation.

The fact that you notice the redness intensifying in the afternoon suggests that it may be related to environmental factors or prolonged eye strain. If you are using a computer for extended periods, this can contribute to eye fatigue and dryness, exacerbating the redness. Dry eyes are a common issue after eye surgeries, and they can lead to discomfort and redness. The artificial tears you mentioned using for dry eye symptoms are crucial in managing this condition.

Regarding the use of pressure-lowering eye drops, it's interesting to note that you observed a reduction in redness shortly after applying them. This could indicate that your eye pressure might be elevated at times, contributing to the redness. Elevated IOP can lead to various symptoms, including redness, and it is essential to monitor your eye pressure regularly, especially after surgery. If you suspect that your eye pressure is fluctuating, it would be prudent to have it measured by your ophthalmologist.

The diagnosis of "eye allergies" you received from the clinic could also be a factor. Allergies can cause redness, itching, and tearing, and they can be exacerbated by environmental allergens or irritants. If the prescribed medications did not alleviate your symptoms, it may be worth discussing alternative treatments or allergy testing with your doctor.

In summary, the redness in your eyes could be due to a combination of factors, including post-surgical inflammation, dry eyes, elevated intraocular pressure, or allergic reactions. It is crucial to maintain regular follow-ups with your ophthalmologist to monitor your eye health and address any concerns. If the symptoms persist or worsen, further evaluation may be necessary to rule out any complications related to your surgeries. Additionally, consider lifestyle adjustments, such as taking regular breaks from screens, using artificial tears frequently, and ensuring a comfortable environment for your eyes.

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