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Dreams of any type of sensory loss usually tend to indicate that that sense isn't being used enough, or being used too much.

With eyes it could be that you are not looking at a situation from the proper perspective. Left side is usually asociated with creativity, while the right is more logical (or something like that) and because your sight did get better, you have the better chance to see the situation for what it is.

the following is from
http://www.dreammoods.com/

Blind

To dream that you are blind, represents your refusal to see the truth or your lack of awareness to a problem. Perhaps you are rejecting something about yourself or your situation. Are you refusing to see any other point of view except your own? Consider the pun, "turning a blind eye".

Left

To dream of the direction left, symbolizes the unconscious and your repressed thoughts/emotions. It is an indication of passivity.

Right

To dream of the right, represents conscious reality, deliberate action and rational thoughts. It may also be a pun on the rightness of an idea, decision, or plan. You are doing the right thing.