Authors:

As our eyes age, they have a tougher and tougher time adjusting to rapid changes in lighting, and we need to be aware of this.

"Dr. Gridlock". The Washington Post Live Chat, live.washingtonpost.com. January 4, 2016.
As our eyes age, they have a tougher and tougher time adjusting to rapid changes in lighting, and we need to be aware of this.