He can not taste two separate tastes at once, nor smell two distinct smells at once; nor feel more than one object with each hand at once; and if he hears several sounds at the same time, they either flow into each other, making a harmony, or confuse him with their discord.

Yet we are all conscious that we see a vast variety of distinct and separate objects at one glance of our eyes.

I think it is manifest that the Former of such an eye not only intended its owner to observe such a vast variety of objects, but from the capacity of his own sight to infer the vastly wider range of vision of Him who gave it.
Besides the breadth of the field of vision, we also require length of range for the purpose of life.

The thousand inconveniences which the short-sighted man so painfully feels are obvious to all.

Yet it may tend to reconcile such to their lot to know that thousands of the liveliest and merriest of God's creatures can not see an inch before them.