If he looks at only the eyes and under. he will not be able to see the persons name and life span.

Human that have traded for the eye power of a god of death cannot see the name or life. span of human who have already passed away by looking at their photos.

The use of the DEATH NOTE in the human world sometimes affects other humans lives or shortens their original life span. even though their names are not actually written in the DEATH NOTE it self.