How can excessive fluorescein affect the Goldmann tonometry process?

Excessive fluorescein can indeed lead to inaccurate measurements during the Goldmann tonometry process. Goldmann tonometry is a method of measuring intraocular pressure (IOP) that requires a clear and precise application of fluorescein dye to the tear film of the eye. If too much fluorescein is used, it may create an overly thick layer on the cornea, which can interfere with the instrument's ability to accurately measure the pressure. This is because the tonometer relies on the interaction between the cornea and the pressure being measured; excessive dye can alter the dynamics and result in erroneous readings.

In the context of the other options, while discomfort may occur with excessive fluorescein, it is not the primary concern in terms of measurement accuracy. Obscuring the view is also less relevant because the goal is to have a clear view for proper tonometry; this could lead to issues, but it mainly impacts the process rather than direct measurement accuracy. Making the test quicker is not a characteristic associated with excessive fluorescein; if anything, it would likely complicate the procedure rather than streamline it. Therefore, the primary impact of excessive fluorescein is on the accuracy of the measurements obtained.