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Learn all about deer eyes and the role a deer's vision plays in its survival & the way deer interact with the world. Discover what deer see.
Deer hunters can be more successful when they understand the strengths and weaknesses of deer eyes. Reviewing scientific research from a number of sources, especially work at the University of Georgia Deer Lab, we compiled the seven most important facts for deer hunters to know about deer vision.
His eyes are on the side of his head and his field of vision is a whopping 310 degrees, which gives him a tremendous field of view to detect danger. A deer’s eye position can be independently controlled to better see the horizon line for this reason, a phenomenon called cyclovergence.
First, deer have a higher concentration of rods (nighttime cells) than humans, but a lower concentration of cones (daytime and color cells). Therefore, deer have better nighttime vision than humans but poorer daytime and color vision. Second, deer have a pupil that opens much wider than ours.
How Deer See: Deer see the world primarily in shades of blue and green-yellow, with reds and oranges appearing more like muted greens or grays. This is because their cones are most sensitive to wavelengths around 535 nm (green) and 460 nm (blue).
If you’re short on time, here’s a quick answer: Yes, deer do blink, but less frequently than humans. In this nearly 3,000 word guide, we’ll take an in-depth look at deer vision, eyes, and blinking. We’ll cover how a deer’s eyes work, why they’re positioned on the sides of their heads, how often they blink, and more.
Deer eyesight is quite different. The wide band of area on the retina is what scientists refer to as the visual streak. It isn't tall from top to bottom but it is wide. What this means is that the deer is in focus horizontally; but when they look straight ahead (vertically) they are out of focus.
Deer and humans both have round eyes and a pupil that dilates and constricts to alter the amount of light reaching the retina (rear of the eye). That's where things start to diverge. While the human pupil is round, the deer's is more oval — almost rectangular.
Deer's eyes provide 300- to 310-degree views of their surroundings, thanks to being positioned on the sides of their heads. Their only blind spot is that 50- to 60-degree area directly behind them. What's more, their eyesight is sharp; they can detect slight movements from significant distances.
If you have ever had a deer stand in the road in front of your headlights and seen the red-orange reflection of deer's eyes shinning back, then you have seen the tapetum at work. Deer have photopigments to sense two colors and allow for determining the range of hues between those colors.