Anna Sewell: Black Beauty

Part IV Chapter 46: Jakes and the Lady (continued)

Besides the depressing effect this had on my spirits, it very much weakened my sight, and when I was suddenly brought out of the darkness into the glare of daylight it was very painful to my eyes. Several times I stumbled over the threshold, and could scarcely see where I was going.

I believe, had I stayed there very long, I should have become purblind, and that would have been a great misfortune, for I have heard men say that a stone-blind horse was safer to drive than one which had imperfect sight, as it generally makes them very timid. However, I escaped without any permanent injury to my sight, and was sold to a large cab owner.