Charles: (about Mary's poor eyesight) How did she manage for so long?
Dr. Burke: Little tricks. Squinting when the eyes are tired. Did you ever see her push back on the sides of her eyes, like this?
Charles: She probably did. I just never realized it.
Dr. Burke: Well, with the amount of schoolwork she's had, the tricks just stopped working, that's all.
Charles: You'd think her Ma or I would have known.
Dr. Burke: No, not so. It's been my experience that parents are the last ones to notice. Maybe someday, they'll have the sense to examine kids before they start school. Then we can avoid the problem.