Fundus photography has several benefits, except for which of the following?

Fundus photography is a valuable tool in ophthalmology, primarily used for capturing detailed images of the retina, including the macula and optic nerve. One of the key functions it serves is to document ocular conditions, assess retinal health, and facilitate detection of diseases such as diabetic retinopathy.

The benefit of fundus photography includes its ability to provide permanent records of the retina's condition over time, which can assist in monitoring disease progression and treatment effects. It also aids in the evaluation of retinal blood flow, though this is typically done through indirect means rather than direct observation.

However, while fundus photography offers many advantages, it cannot replace pupil dilation. Pupil dilation is an important part of a comprehensive eye examination as it allows for a wider view of the posterior segment. Dilation enhances the clinician's ability to thoroughly assess the retina and determine the state of ocular structures that may not be visible under undilated conditions. Therefore, although fundus photography is a powerful diagnostic tool, it does not eliminate the need for pupil dilation in thorough eye exams.