Man, 34, has tooth implanted in eye to restore his vision (today.com)

Discussion Surgery implants tooth material in eye as scaffolding for lens (152 points, 7 months ago, 56 comments) https://news.ycombinator.com/item?id=43201682

Is that comfortable over time? I wonder if the enamel degrades for any reason and causes abrasions against the inside of the eyelid.