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 how i.Scription by ZEISS offers clearer night vision, sharper contrast, and reduced eye strain through personalized lens technology.
Z1 blue lenses help reduce seizure risk in photosensitive epilepsy by filtering specific light frequencies. Learn how they offer comfort, control, and confidence.
Discover how to choose the best frames for your progressive lenses. Learn what features to look for and what to avoid to ensure clear, comfortable vision.
Explore VAKAY’s journey from a personalized design to a renowned handmade eyewear brand. Discover their latest exclusive collection, crafted with precision, passion, and a commitment to sustainability through their ONE FOR ONE tree-planting initiative.
Bevel Eyewear Calgary | Spring-Summer 2025
Discover the best sunglasses tint for light sensitivity relief. Learn how FL-41 lenses can ease photophobia symptoms like migraines and eye strain.
Moscot 110th Anniversary
"Step inside the creative studio of Zack Moscot, MOSCOT's fifth-generation Chief Design Officer, and explore the artistry behind their iconic eyewear. Discover how 110 years of heritage and craftsmanship blend with modern design in the heart of New York City."
Looking for the best frames for high prescription lenses? Mountain View Optometry’s expert guide breaks down the top frame styles, materials, and tips to help you find eyewear that’s stylish, supportive, and perfect for you.
A recent study has highlighted a concerning connection between visual impairment and sleep dysfunction among older adults.
