It is not possible to tell whether water is of an appropriate quality by visual examination.

Doctors would test urine by using a visual examination.

After all, we only made the one visual examination, and that under less than ideal conditions.

Diagnosis is based on visual examination and the presence of itching.

Unfortunately, a visual examination of the object revealed very little.

We need a visual examination and assumed it would have to be done by a diver.

When they get closer they'll try for a visual examination.

On visual examination it didn't look terribly aggressive, and her eye was right about 85 percent of the time.

However, a visual examination is not sufficient, and tests requiring direct contact would be necessary.

And you can't get any kind of clear dating from visual examination, either.