Persistent Dilated Pupils After Eye Injury: Causes and Next Steps - Ophthalmology

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After the injury, long-acting mydriatic treatment was administered, but it has been over ten days since the last application, and the pupil has not constricted?


Hello, doctor.
I sustained an eye injury due to a strong impact, and I was treated in the emergency department with a long-acting mydriatic agent.
For the past few days, I have been using it once daily, but during my follow-up visit, the doctor said I no longer need to use it.
However, it has been over twelve days since my last application (the doctor mentioned that dilation should resolve within seven days), and my pupil has not constricted, showing no response to bright light.
Therefore, I would like to ask the following questions:
1.
Could the prolonged use of the drops in the initial phase of the injury be the reason for a longer recovery period?
2.
Are there any methods to address the issue of my dilated pupil?
3.
Which type of specialist should I consult regarding this issue? Should I see a neuro-ophthalmologist, a retinal specialist, or a corneal specialist?
4.
If my pupil does not constrict, what precautions should I take?
5.
Is it advisable to get glasses at this stage, or should I wait a few more days until the situation is more certain?

Niming, 20~29 year old female. Ask Date: 2022/12/16

Dr. Gao Pilin reply Ophthalmology


Hello: 1.
It is possible that the drug metabolism is slower, and it may still have an effect.
It is also possible that a strong impact has caused injury to the iris muscles, leading to an inability to constrict.
2.
You can observe for a while longer; it may gradually recover, or you can use some miotic agents to help it constrict.
3.
Any ophthalmologist can assist with this.
4.
Be mindful of ultraviolet exposure; you may need to wear sunglasses when going outside.
5.
If you require glasses for daily activities, you can get a prescription.

Reply Date: 2022/12/16

More Info


Hello,
Thank you for your detailed inquiry regarding the persistent dilated pupils following your eye injury. It’s understandable to be concerned about this situation, especially after experiencing a significant trauma to the eye. Let’s address your questions one by one.

1. Recovery Duration Due to Initial Treatment: It is possible that the frequent application of a long-acting dilating agent could contribute to a prolonged recovery period. When the eye is exposed to these medications, it can take time for the muscles controlling the pupil to regain their normal function. However, the duration of dilation can also be influenced by the severity of the injury and any associated trauma to the nerves or muscles around the eye.

2. Solutions for Persistent Dilation: Unfortunately, there is no specific treatment to hasten the return of the pupil to its normal size once it has been dilated by medication or injury. The best approach is to allow time for the eye to heal naturally. In some cases, if there is underlying nerve damage, additional treatments may be necessary, but this would be determined by a specialist.

3. Specialist Consultation: Given your symptoms, it would be advisable to consult with an ophthalmologist who specializes in neuro-ophthalmology. This specialist focuses on the relationship between the nervous system and the eyes, which is particularly relevant in your case since the pupil's response is controlled by the autonomic nervous system. They can assess whether there is any nerve damage or other underlying issues that need to be addressed.

4. Monitoring Persistent Dilation: If your pupil remains dilated and unresponsive, it’s important to monitor for any additional symptoms such as pain, vision changes, or headaches. These could indicate complications that require immediate medical attention. Additionally, ensure that you protect your eye from bright lights and avoid any activities that could strain your vision until you have a clearer understanding of your condition.

5. Eyeglass Prescription Consideration: It is generally advisable to wait until your pupil has returned to its normal size and function before getting an eye exam for glasses. This is because the dilation can affect your vision and the accuracy of any prescription. Once your eye has stabilized, you can then proceed with a comprehensive eye exam to determine if you need corrective lenses.

In summary, while it can be concerning to have persistent dilated pupils after an eye injury, it is often a temporary condition that will resolve with time. However, given the complexity of eye injuries, it is crucial to follow up with a neuro-ophthalmologist to ensure that there are no underlying issues that need to be addressed.
Please continue to monitor your symptoms and seek medical advice if you notice any changes or if your condition does not improve. Take care, and I hope for a swift recovery for your eye.

Best regards.

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