Proporta is a company which makes a magnifying lense for the PSP, but it may interfere with your glasses or contacts.
They get glasses.
Stress
why do we have poor peripheral vision in day light
have poor vision to the front
Eye strain causes poor vision. Strain is caused by the radiation coming out of the computer screen. So yes, it's likely to ruin your eyesight.
Rhinos have very poor vision
No, their distance vision is rather poor.
you are going blind
They have poor vision. But they have very good hearing and sense of smell.
Poor diet.
Yes they see with their tongue to scents heat waves!
Humans have rather poor night vision. We use torches and night-goggles, etc, to overcome our poor night vision.