One of the most common questions our doctors get asked is “why does my eyesight worsen at dusk or dawn?”. The answer has to do with the tiny light-gathering cells at the back of your eyes, located on your retinas.
Why is my vision worse at dusk or dawn? Photoreceptors are Cells in Retina having Rods and Cones For Strong and Weak Light
June 28, 2010
Many of you have heard of rods and cones. These are the cells that gather light at the back of your eyes, known as photoreceptors. The rods and cones have different jobs. The cones are used for sharp, detailed central vision and are most effective during daylight hours. The rods are located more peripherally in your retinas and are more sensitive in low light levels.
Because the cones need so much light to work well, when the light is weak (such as at dawn or dusk), they can’t register sharp vision. And as the light is changing, the rods are not fully active for “night mode”. So this transition period is most difficult for your eyes to adjust to. This is why so many traffic accidents happen at dusk or dawn.
So remember this when you are driving in the morning or evening – reduce your speed because you are actually not seeing as well as you normally do.
Discover the everyday chemicals quietly damaging your eyeglass lenses. Learn how to avoid them and keep your vision crystal clear.
Confused by your eye prescription? Learn what those numbers mean, from SPH to CYL, and how they impact your vision and glasses.
Struggling with dry eye? Learn the differences between IPL, RF, and Jett Plasma treatments, and find out which option may be right for you.
Think your child has ADHD? It could be a vision issue. Learn how to spot the differences and why a full eye exam should be your first step.
Discover MOSCOT’s Fall 2025 Collection: Living History. Inspired by New York’s storytellers, creators, and visionaries, this five-frame release blends bold design, timeless craftsmanship, and authentic Lower East Side heritage.
Struggling with progressive lenses? Learn how frame fit, lens design, and daily habits can improve comfort, reduce distortion, and help you adapt with confidence.
Discover office lenses: indoor glasses that reduce digital eye strain and improve comfort, clarity, and focus during extended screen time.
Explore the differences between photochromic lenses and prescription sunglasses. See which eyewear option fits your daily routine, style, and eye health needs.
Relieve dry eye symptoms and refresh your skin with the Jett Plasma Pen: a non-invasive solution with fast results and zero recovery time.
Experience hands-free performance with Oakley Meta AI glasses. Capture moments, stream music, and access real-time answers with built-in Meta AI, perfect for active lifestyles.
