What is a common cause of SEAL (Superior Epithelial Arcuate Lesion)?

A Superior Epithelial Arcuate Lesion (SEAL) is primarily caused by mechanical factors involved in contact lens wear. Each of the potential causes listed contributes to the development of SEAL, which makes this the most comprehensive option.

Excessive lens movement can cause a rubbing effect on the epithelial surface of the cornea, leading to localized areas of damage. This movement can create an environment conducive to lesions forming, particularly in the superior part of the cornea, where lens interaction is often greatest.

Higher DK lenses are designed to allow more oxygen to pass through to the cornea. While they have their advantages, if the lens fits improperly or there is excessive movement, they can still lead to mechanical stress on the corneal epithelium, which can result in SEAL.

Mechanical GP injury refers to any direct trauma to the cornea from the edge of the rigid gas permeable lens. This can arise from an improperly fitting lens or excessive lens movement, leading to abrasions and lesions, including SEAL.

By recognizing that each of these factors can lead to the development of SEAL, it becomes clear that the best answer encompasses all of them. Thus, the correct choice reflects the multifaceted nature of this condition in the context