Yarin's POV:
Heller didn't blame him; though he found it a bit excessive for Sisley to leave without a word, he said, "Those days are behind us now, merely temporary physiological conditions. My eyes are completely fine now."
Then he asked, "Speaking of which, have you experienced these symptoms as well?"
Sisley nodded. "Yes, I believe these are side effects of the power we possess. When the physical body can no longer accommodate spiritual development, the spirit will, in turn, modify our bodies. Have you noticed that since the brief blindness, your eyes have actually improved? You can see farther, more clearly, and with reduced fatigue. Your tolerance for wind and light has also increased."
Heller nodded. He used to be slightly nearsighted, but after his last eye examination, he discovered that his vision had completely returned to normal and even exceeded normal levels.