Why would the nurse secure fluorescein sodium drops for a patient suspected of eye trauma?

Fluorescein sodium drops are used in cases of suspected eye trauma primarily because they stain the eye, specifically the cornea, allowing for better visualization of any potential injuries or defects present. When fluorescein is applied to the eye, it highlights areas where the corneal epithelium may be damaged or where there are abrasions, making them more visible under blue light. This enhanced visualization is critical in assessing the extent of trauma and guiding appropriate treatment.

The other choices do not align with the primary purpose of fluorescein sodium. While pupil dilation or anesthetic effects are important in ocular examination, these functions are associated with different compounds, not fluorescein. Similarly, lubricating or moisturizing the eye does not describe the role of fluorescein in trauma assessment. Hence, the primary function of fluorescein sodium drops in this context is their ability to stain and help in the visualization of corneal injuries.