Why can’t we train our eyes like we can train the rest of our body?
In: Biology
Your eyes take light from the outside, and physically focuses it. This means the eye redirects the light to a specific, very tiny point in your eyes.
Its the physical structure of your eye that determines how well they can focus the light. With poor vision, your eye cannot focus it well enough. Glasses helps by focusing the light slightly before it hits your eyes.
You can use muscles to sharpen your vision temporarily. By squishing, or elongating your eyes, you physically change the structure of your eye, and therefor where the light hits. But i would not recommend doing this. It can hurt your eyes.
Without glasses your eyes will try to compensate by engaging those muscles, and it will lead to headaches and fatigue.
The same thing can happen when looking at blurry images, or 3d movies. The eyes try to focus the light hitting them using the muscles in the eye, and it can cause headaches.
Regarding training those muscles, you dont want huge muscles in your eye sitting in your skull where its tightly packed. Arm muscles expand outward, away from your body. Eye muscles would expand outward, into your skull. Not very nice.
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