Scleral Lenses for Complex Eye Needs When standard contact lenses don't work, specialty lenses may help address complex vision needs. Discover how scleral and custom-fit lenses can support patients with keratoconus, post-corneal surgery, severe dry eye, significant astigmatism, or previous contact lens fitting challenges. Riverbank Optometric Vision Center offers specialty lens evaluations to explore personalized options for clearer, more comfortable vision.