What is one common issue faced with lenses that are deemed too steep?

When contact lenses are considered too steep, one significant issue that arises is decreased oxygen transmission. Steep lenses typically fit tightly against the cornea, which can restrict the natural movement and tears that facilitate oxygen flow to the corneal surface. Adequate oxygen transmission is crucial for corneal health, as the cornea receives oxygen directly from the air rather than from blood vessels. If a lens is too steep, it may not allow sufficient oxygen to reach the cornea, potentially leading to complications such as corneal hypoxia.

It's important to address this issue within the context of the other potential problems associated with steep lenses. Lag during blinking may occur due to the lens's tight fit, but it does not have the same significant impact on corneal health as decreased oxygen transmission. Lens dislocation and limbal blanching are also relevant considerations; however, these are less directly linked to the steepness of the lens compared to the critical aspect of oxygen availability for the cornea. Thus, the most significant concern associated with excessively steep lenses is indeed decreased oxygen transmission.