How do you use ophthalmologist in a sentence?

1. My mother visited the ophthalmologist to have her eyes checked.

2. The ophthalmologist recommended that my Uncle should undergo laser surgery to correct his vision.

3. The boy's parents are worried because the ophthalmologist detected a rare eye condition in him.

4. I will get my eyes tested again next year when my ophthalmologist is back from his sabbatical.