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Photo by Burak The Weekender\u00a0<\/strong><\/a><\/p>\n When it comes to understanding visual impairments, astigmatism is a common condition that often comes into focus. If you have astigmatism, you might find that you perceive light differently than those with standard vision, especially once the sun goes down. Let\u2019s delve into the topic and unravel how astigmatism can affect light perception, and discover how <\/span>Zenni<\/span><\/a> can assist in navigating these visual challenges.<\/span><\/p>\n Astigmatism is a refractive error causing blurred or distorted vision at all distances, both near and far. This visual anomaly is typically due to an irregularly shaped cornea \u2013 the clear, round dome covering the eye\u2019s front. This irregular shape causes light to scatter rather than to focus directly on the retina, leading to blurred or distorted vision.<\/span><\/p>\n Photo by Mathias Celis<\/strong><\/a><\/p>\n Now that we understand what astigmatism is, let\u2019s discuss how it influences light perception. Here are a few common experiences:<\/span><\/p>\n At night, your pupils dilate to let in more available light. For most people, this simply helps with seeing in the dark, but if you have astigmatism, a wider pupil exposes more of your eye\u2019s irregular curvature to incoming light. That extra surface area scatters light instead of focusing it cleanly, which is why night driving and other low-light activities often feel harder than daytime tasks.<\/span><\/p>\n This scattering is also related to what eye doctors call higher-order aberrations, subtler irregularities like coma and spherical aberration that exist alongside astigmatism itself. They can add to the halos, glare, and comet-like streaks some people see around lights at night, especially as pupils widen further.<\/span><\/p>\n If you often drive after dark, small adjustments can help: dim your dashboard lights to reduce contrast with the dark road, avoid staring directly at oncoming headlights, take breaks on longer drives to rest your eyes, and give your eyes a few moments to adjust when moving from a bright space into the dark. Zenni\u2019s <\/span>night driving glasses<\/span><\/a> use NeoContrast lens technology to cut glare and sharpen contrast in low light conditions.<\/span><\/p>\n The good news is that astigmatism is easily correctable with the right eyewear. Custom corrective lenses, often toric in shape, are designed to counteract the cornea\u2019s uneven curvature, allowing light to focus properly on your retina. <\/span>Toric contact lenses work the same way for contact lens wearers, aligning with the eye\u2019s curvature rather than sitting evenly like a standard lens. Additionally, lens coatings such as anti-reflective or photochromic can help manage light sensitivity and glare. For a more permanent option, refractive surgery such as LASIK or PRK can reshape the cornea to correct astigmatism, though it is best discussed with your eye doctor to see if you are a candidate. Zenni offers a wide <\/span>range of frames and lenses.<\/span><\/a><\/p>\n Shop these frames<\/strong><\/a><\/p>\n So, while astigmatism does affect light perception, it isn\u2019t a cause for worry. Awareness of the condition and understanding your specific symptoms can lead to effective management and clearer, more comfortable vision. Remember to have regular eye exams and to keep your prescription up-to-date for the best possible vision correction. <\/span>Ready to update your look? <\/span>Explore Zenni\u2019s eyeglasses<\/span><\/a> to find your next pair.<\/span><\/p>\nAstigmatism Explained<\/strong><\/h2>\n
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<\/p>\nEffects on Light Perception<\/strong><\/h2>\n
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Why Nighttime Astigmatism Happens<\/b><\/h2>\n
Managing Astigmatism<\/strong><\/h2>\n
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