Worsening Astigmatism: Causes and Relief Strategies - Ophthalmology

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Worsening astigmatism can be a frustrating experience, especially when it starts to affect your vision significantly, particularly at night. The symptoms you describe, such as halos around lights, rainbow-like colors, and increased light scattering, are indeed commonly associated with astigmatism. Astigmatism is caused by an irregular curvature of the cornea or lens, which leads to distorted or blurred vision. This irregular shape prevents light from focusing properly on the retina, resulting in the visual disturbances you are experiencing.

The fact that these symptoms are more pronounced at night is not unusual. In low-light conditions, the pupils dilate to allow more light in, which can exacerbate the effects of astigmatism. The increased light entering the eye can lead to more pronounced halos and glare, making it difficult to see clearly. Additionally, if you have underlying conditions such as floaters (as you mentioned with your left eye), this can further complicate your visual experience.

Regarding your question about the possibility of your orthokeratology lenses (the corneal reshaping lenses) contributing to the worsening of your astigmatism, it is indeed possible. If the lenses are not fitting properly or if they are not providing the correct amount of corneal reshaping, they could lead to changes in your vision. Orthokeratology works by temporarily reshaping the cornea to reduce refractive errors, including myopia and astigmatism. However, if the lenses are not providing the intended effect, or if they are causing discomfort, this could lead to visual disturbances.

To address your symptoms and improve your visual comfort, consider the following strategies:
1. Consult an Eye Care Professional: The first step is to schedule an appointment with your optometrist or ophthalmologist. They can perform a comprehensive eye exam to assess your current prescription, the fit of your orthokeratology lenses, and the overall health of your eyes. They may recommend adjustments to your lenses or a different type of vision correction.

2. Update Your Prescription: If your astigmatism has worsened, you may need a new prescription for glasses or contact lenses. Sometimes, a simple update can significantly improve your visual clarity and reduce symptoms like halos and glare.

3. Consider Different Lens Options: If orthokeratology lenses are not providing the desired results, discuss alternative options with your eye care provider. This could include daily wear contact lenses, glasses, or even surgical options if appropriate.

4. Manage Lighting Conditions: When driving or being out at night, try to minimize glare by using anti-reflective coatings on your glasses or contact lenses. Additionally, avoid looking directly at bright lights, and use dimmer lighting when possible to reduce the contrast between light and dark areas.

5. Eye Health Maintenance: Ensure you are maintaining good eye health by staying hydrated, taking regular breaks from screens, and using lubricating eye drops if you experience dryness. This can help alleviate some discomfort associated with visual disturbances.

6. Monitor Symptoms: Keep track of when your symptoms worsen and any potential triggers. This information can be valuable for your eye care provider in determining the best course of action.

In conclusion, the symptoms you are experiencing are likely related to your worsening astigmatism, and it is essential to consult with an eye care professional to explore the underlying causes and appropriate relief strategies. Proper assessment and management can help restore your visual comfort and quality of life.