Which finding would be most concerning during an eye examination?

During an eye examination, changes in vision are particularly concerning because they may indicate significant underlying issues, such as retinal detachment, glaucoma, or other serious ocular conditions. Vision changes can impact a person's ability to perform daily activities and may signal a need for immediate intervention to prevent further damage or loss of sight.

In contrast, while excessive tearing, redness of the eye, and itching sensation can indicate various eye conditions, they are generally less urgent than changes in vision. For instance, redness may be due to irritation or infection, while excessive tearing and itching could be related to allergic reactions or dry eye syndrome. However, these conditions do not typically pose an immediate risk to vision, which is why changes in vision are the most alarming finding during an eye examination.