A non wetting gas permeable lens may cause?

A non-wetting gas permeable lens can indeed lead to several issues that affect the comfort and clarity of vision for the wearer. Understanding the implications of each potential consequence helps clarify why the selected answer encompasses them all.

Firstly, non-wetting lenses can accumulate debris and deposits on their surface more readily than wetting lenses, which may significantly degrade visual acuity, leading to hazy or filmy vision. This can occur because the surface tension of the tear film does not adequately interact with the lens, resulting in an inconsistent optical surface.

Secondly, lens awareness can manifest when the lens does not conform adequately to the ocular surface or creates an irregular fit. Non-wetting lenses may not provide sufficient lubrication, which can lead to an increased sensation of the lens on the eye. Wearers may become more cognizant of having the lens in their eye, which is often referred to as lens awareness, detracting from overall comfort.

Lastly, the design of non-wetting lenses can contribute to sensations of dryness or grittiness in the eyes. As these lenses do not maintain a proper tear film interaction, this can lead to inadequate moisture on the surface of the eye, causing feelings of dryness or the sensation of something being present in the eye (gritt