Which condition can be a result of untreated infections affecting the eye?

Untreated infections affecting the eye can lead to serious complications, one of the most significant being permanent vision loss. When infections, such as bacterial conjunctivitis, keratitis, or endophthalmitis, are not adequately addressed, they can cause damage to various structures within the eye, including the cornea, lens, retina, and optic nerve. This destruction can result in irreversible changes that impact the eye's ability to function properly.

For example, corneal scarring from a severe infection can obstruct vision, and damage to the retina can lead to conditions like retinal detachment, which often results in significant vision impairment. The risk of complications increases the longer an infection goes untreated, making timely medical intervention crucial to preserve eye health and vision.

Other choices, such as increased vision clarity or improved eye function, are unlikely outcomes as infections typically cause inflammation, disruption, and other detrimental effects. Similarly, reduction in sensitivity to light isn't a typical positive outcome of an untreated eye infection, as infections usually cause heightened sensitivity or discomfort. Hence, the only logical outcome among the options provided that aligns with the consequences of untreated eye infections is the potential for permanent vision loss.