What can cause corneal abrasions or ulcers?

Improper use of contact lenses is a significant factor that can lead to corneal abrasions or ulcers. This can occur for several reasons, such as wearing lenses for too long, failing to clean them properly, or not using the appropriate type of lenses for the specific needs of the eyes. When lenses are not maintained correctly, they can cause irritation, reduce oxygen supply to the cornea, and create a breeding ground for bacteria, which may ultimately lead to abrasions or even ulcerations on the corneal surface.

The other options present aspects related to eye care but do not have the same direct correlation to causing abrasions or ulcers on the cornea. For example, UV light exposure can lead to photokeratitis but is less directly tied to abrasions or ulcers caused by mechanical trauma or improper hygiene. Excessive screen time may cause eye strain and discomfort, yet it does not typically result in physical damage to the cornea. Vision correction surgeries are generally safe and aim to improve eye health, making them unlikely to cause abrasions or ulcers unless there are complications during the healing process. Overall, improper care and handling of contact lenses pose a clear risk for such injuries to the cornea.