1) the iris opens wider, thus any imperfections in the lens become more apparent.
2) the rods of the eye (which respond better to dim light) are less densely pack near the fovia of the eye (the part with the sharpest vision).
night sight
Improper stretching
Wear or improper adjustment.
Improper diet
If you sleep during the day, this may result in improper sleep at night. It is a good idea to sleep at night so that you aren't sleeping all day.
yellow
Lack of or improper maintenance.
due to improper packing and water enters
Improper garbage disposal can cause harmful effects on animal life. Improper garbage disposal can also cause air pollution and pollution of soil.
The rotation of the earth causes night and day.
Improper rotation or worn shocks or struts
it is because of improper diet,drinking alchohol and smoking.