Fat digestion takes much longer than the digestion of carbohydrates and somewhat longer than the digestion of proteins. A raw salad consisting of nonstarchy vegetables can be digested within two to three hours.
7 Reasons Why You Have Blurry Peripheral Vision. The function of the retina can affect people's peripheral vision. Blurred peripheral vision can be caused by conditions which are not serious such as asthenopia, but serious conditions could also be culprits.
The loss of peripheral vision in all directions (that is, leaving you with only central vision) is sometimes called tunnel vision. Although peripheral vision loss can occur with a number of eye and even systemic conditions, it is most commonly associated with glaucoma, which causes deterioration of the optic nerve. The optic nerve transmits visual signals to the brain.