What is a common result of long-term rigid contact lens wear?

When considering the effects of long-term rigid contact lens wear, corneal scarring is a common result. Rigid gas-permeable lenses, while beneficial for many, can lead to issues if they are not fitted properly or if they are worn for extended periods without adequate care.

The cornea is a delicate structure, and constant pressure or friction from the lens can lead to micro-abrasions or changes in the corneal surface. Over time, these influences can result in scarring. This scarring may not always be visible to the naked eye, but it can affect visual clarity and comfort.

Issues like ptosis (dropping of the eyelid) and dry eye syndrome can occur as consequences of various factors, but they are not typically direct results of rigid lens wear. Astigmatism is often an existing condition that can be corrected with lenses, rather than a result of wearing them.

Thus, the connection between long-term rigid contact lens wear and corneal scarring is well-documented, making it the most accurate answer.