Roshni told me about a technology that enables blind men to see using a video cam which will send messages to the brain, allowing them to see even if its black and white. I made further research an article.

Blind men can see phosphenes, which are small points of light, with the use of electrical stimulation of their visual cortex. When an electrical current passes through the brain, the lights don't appear in one spot, rather they spread. Dobelle studes this effect and says that they are building a patient's map layer by layer. The first layer contains individual phosphenes and the next of multiples. They are aiming to know how the patient's phosphenes are related to each other so that the video feed can be translated in a way that will makes sense in his mind.

It's great to know that it's possible for the blind to see even though if it's not the exact and perfect vision. They will not miss much of the world after all.