In fact, many people who own cats and dogs discover their pets' eyes glow at night. It can be quite eerie to look at them in the dark, as the light emanating from their eyes gives off a sense of pressure.
In reality, this is because most wild animals have many special crystals at the back of their eyes, a common physiological phenomenon. These crystals have a strong ability to reflect light, gathering and focusing the diffuse light around them into a concentrated beam that reflects back, making it seem as though their eyes are glowing. Essentially, it's the principle of reflection.
However, there's no light source around Wang Ye right now, so the reflection factor can be ruled out. The most likely explanation is that his eyes themselves are emitting light.
But the notion of the human body emitting light is simply too incredible; even Wang Ye himself cannot understand why his eyes are emitting such a dazzling light.
