Double Vision at Traffic Lights After LASIK: Causes and Solutions - Ophthalmology

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Experiencing double vision, especially when looking at traffic lights after undergoing LASIK surgery, can be concerning. This phenomenon, often referred to as diplopia, can arise from various factors, particularly following refractive surgery. In your case, since you mentioned that this issue began about two months post-surgery and is particularly noticeable with green traffic lights, it’s essential to consider several potential causes and solutions.


Possible Causes of Double Vision After LASIK
1. Dry Eyes: One of the most common side effects after LASIK is dry eyes. The surgery can temporarily disrupt the tear film, leading to dryness and discomfort. Dry eyes can cause visual disturbances, including double vision, particularly in bright light conditions, such as when looking at traffic lights.
2. Visual Axis Misalignment: After LASIK, the cornea is reshaped to correct refractive errors. If there is any misalignment in the visual axis or if the healing process leads to irregularities in the corneal surface, it can result in diplopia.
3. Residual Refractive Error: Although you mentioned that your follow-up examination did not reveal any astigmatism, it’s possible that there is still some residual refractive error that may not have been detected. This could lead to visual discrepancies, particularly at certain distances.

4. Neurological Factors: In some cases, double vision can be related to neurological issues rather than purely optical ones. If the brain is not properly processing the visual information from both eyes, it can lead to diplopia.

5. Contrast Sensitivity Issues: After LASIK, some patients experience changes in contrast sensitivity, which can affect how they perceive lights, particularly at night or in low-light conditions. This can lead to the perception of double images.


Solutions and Recommendations
1. Consult Your Surgeon: The first step is to discuss your symptoms with your LASIK surgeon or an eye care professional. They can conduct a thorough examination to determine the underlying cause of your double vision.

2. Artificial Tears: If dry eyes are contributing to your symptoms, using preservative-free artificial tears can help alleviate dryness and improve visual clarity. Regular use can help stabilize the tear film and reduce visual disturbances.

3. Visual Rehabilitation: In some cases, visual therapy or rehabilitation exercises may be recommended to help your brain adjust to the changes in vision post-surgery.

4. Follow-Up Refraction: If residual refractive error is suspected, a follow-up refraction may be necessary to determine if any corrective lenses or enhancements are needed.

5. Monitor Symptoms: Keep a diary of your symptoms, noting when they occur and under what conditions. This information can be valuable for your eye care provider in diagnosing the issue.

6. Consider a Second Opinion: If you feel that your concerns are not being adequately addressed, seeking a second opinion from another eye care professional can provide additional insights and options.


Conclusion
Double vision after LASIK surgery can be distressing, but understanding the potential causes and seeking appropriate solutions can help manage the issue. It’s crucial to maintain open communication with your eye care provider and to advocate for your health. With the right approach, many patients find that their symptoms improve over time as their eyes heal and adjust post-surgery.