Contact Lens Flashcards
1
Q
When fitting a scleral contact lens, how much clearance over the steepest area of the cornea is considered ideal?
50-100 microns
100-300 microns
300-500 microns
0-50 microns
A
100-300 microns
Explanation
When fitting scleral contact lenses, it is extremely important to ensure that the lens is completely vaulting the entire corneal surface. Ideally, clearance of approximately 100-300 microns should be attained over the steepest region of the cornea.
