Patients with Keratoconus can often just not get spectacles or contact lenses that they can see clearly with.
Fact: Modern LASIK does not affect night vision and may even improve it.
We see through the cornea, which is the clear front window of the eye. A normal cornea has a dome shape, like a ball. In Keratoconus, however, the structure of the cornea is just not strong enough to hold this round shape. The cornea bulges outward and downward like a cone.