Why Does Astigmatism Get Worse at Night?
Astigmatism is a common vision condition that affects millions of people worldwide. It occurs when the cornea or lens of the eye is irregularly shaped, causing light to focus unevenly on the retina. While astigmatism can be corrected with glasses, contact lenses, or refractive surgery, many patients often notice that their vision becomes worse at night. This article delves into the reasons behind this phenomenon and explores the potential remedies for managing night-time astigmatism.
Understanding Astigmatism
Astigmatism can be categorized into two types: regular and irregular. Regular astigmatism is caused by a consistent curvature in the cornea or lens, while irregular astigmatism is due to an irregularly shaped cornea or lens. The most common cause of astigmatism is genetics, but it can also be caused by eye injuries, eye infections, or the natural aging process.
The Role of Light
One of the reasons why astigmatism may seem worse at night is the way light interacts with the eye. During the day, the sun’s bright light helps to mask the effects of astigmatism, making vision appear clearer. However, at night, when light levels are lower, the irregularities in the cornea or lens become more pronounced, causing blurred vision and increased eye strain.
Environmental Factors
Another factor that can contribute to night-time astigmatism is the environment. For instance, glare from streetlights, car headlights, and other sources can exacerbate the effects of astigmatism. Additionally, the lower light levels at night can make it more difficult for the eyes to adjust, leading to a temporary worsening of vision.
How to Manage Night-Time Astigmatism
To manage night-time astigmatism, there are several strategies that patients can try:
1. Wearing Glasses or Contact Lenses: Properly fitted corrective lenses can help to improve night-time vision by correcting the irregularities in the cornea or lens.
2. Using Anti-Glare Lenses: Anti-glare lenses can reduce the glare from bright lights, making it easier for patients with astigmatism to see clearly at night.
3. Adjusting Lighting: Ensuring that the environment has adequate lighting can help to minimize the effects of night-time astigmatism. This includes using brighter lights or adjusting the brightness of overhead lights.
4. Taking Breaks: To prevent eye strain, it’s essential to take regular breaks from screens and other sources of bright light, especially at night.
5. Seeking Professional Help: If night-time astigmatism is significantly impacting your quality of life, it’s essential to consult an eye care professional. They can provide personalized advice and recommend the most suitable treatment options.
Conclusion
While astigmatism can be challenging to manage, especially at night, there are various strategies that patients can employ to improve their vision. By understanding the factors that contribute to night-time astigmatism and seeking appropriate treatment, individuals can enjoy clearer vision and a better quality of life, even in low-light conditions.
