Does screening for vision serve as a diagnostic procedure?

Screening for vision primarily serves as an initial assessment tool to determine if an individual may have a vision problem that requires further evaluation. It identifies those who are at risk or who may benefit from further diagnostic testing but does not confirm specific diagnoses.

The purpose of vision screening is to flag potential issues rather than to provide definitive diagnoses. It does not delve into the underlying causes of any vision issues; rather, it is aimed at identifying the need for more comprehensive evaluations or corrective measures such as glasses. Therefore, saying that vision screening only determines the need for glasses accurately reflects its function in the broader context of eye care.

In contrast, other options suggest roles for screening that exceed its actual capability, like diagnosing specific conditions or serving as comprehensive diagnostics, which are not accurate representations of what a vision screening accomplishes.