Heaven’s Ghost re-energized Akira’s cells and the regenerative abilities this granted him temporarily revived his eyesight. This coupled with his Shingan gave him the sensation of oneness with the universe. This enhanced consciousness enables a mind to perceive information that is closed to the five physical senses.
What we see with our eyes are nothing more then objects and forms, mere reflections of light that inform the brain of their existence through electrochemical interaction. In reality you are not seeing them at all, merely receiving sensory information that formed an audio-visual pattern in the mind like a reflection of the world inside of a mirror. Mere sensualism is not a proper way to describe the harmony of the world, nor could it tell one of the it’s living essence. They are not quantifiable things, and as ineffably qualifiable as they are their value to the individual are not the same thing as their value to the Cosmos.
Akira can look beyond the form, beyond the impression to the reality that underlay them. All physical matter is but transitional energy. Atoms form when Quantum energy is shaped by a universal constant into a static field. Basically its like the Bakusai Tenketsu only instead of temporarily shifting his view to find the breaking point while powered by Heaven’s Ghost Akira is able to permanently see the complex network of energy matrices and force lines that make of the world. He is able to see energy in its rawest form. So basically instead of his eyes
reflecting light and his ears and skin sensing vibrations that reflect ki. He able to see the faint flows of air and shifts in temperature granting him a perfect field of 360 degree vision and sensation. Furthermore unlike the Bakusai Tenketsu he can use this on humans. He is able to see small cracks in the bones, tears in the muscles the weaknesses that skilled and experienced warriors have learned to ignore but are still there none the less.