Final answer:
If our vision were better, we could see ultraviolet light, interpret infrared as heat signatures, have a much sharper resolution like birds of prey, and detect radio waves. The foveal vision's high concentration of cone cells provides us with our sharpest vision. Animals have developed particular vision abilities for survival, which we would experience firsthand with enhanced vision capabilities.
Step-by-step explanation:
If our sense of vision were "better," a few things that we might be able to see, which are currently beyond human visual capabilities, could include:
- The ultraviolet light that certain animals and insects can see, which would reveal patterns in flowers and security features in banknotes.
- The infrared spectrum, allowing us to see heat signatures much like some species of snakes or devices designed for night vision.
- A much sharper resolution of sight similar to that of birds of prey, perhaps enabling us to see small details at great distances.
- More subtle transitions in light intensity, potentially enhancing our ability to see in low-light conditions or at night.
- The radio waves which make up a part of the electromagnetic spectrum
For instance, the sensitivity of foveal vision refers to the acute vision in the direct line of sight, where the concentration of cone cells is highest on the retina. When focusing on the letter 'G' in the word 'ROGERS,' the letters on either side may appear less sharp because they fall outside the central focus.
Certain animals have highly developed senses of vision to aid in their survival. Raptors have excellent vision to spot prey from afar, and other creatures have advanced night vision for hunting or navigation in darkness.
In the case of a person with cataracts having their lens removed, they become capable of seeing ultraviolet light due to the removal of the natural lens which typically filters it out. Fluorescent substances are used to make clothing appear brighter in sunlight because they absorb UV light and re-emit it as visible light.
Better vision would certainly expand our perception and understanding of the world around us.