Abstract
In this review there was tried to determine the curvature radius present in some pathologies and corneal diseases of hereditary, genetic or iatrogenic character, in flat corneas and steep corneas as esclerocornea, microcornea, megalocornea, Keratoconus, keratoglobus, curvature myopia and others. An article review was made to identify frequent corneal alterations that can be found in patients with flat and steeper curves different from corneal measures average between 42.00 and 45.00 D. It was concluded that in the patients with on flat corneas the corneal refraction was from 20.00 D to 41.50 D being the average value in the review 32.25 D; in steeper corneas, corneal refractions were from 51.00 to 59.75 D, being the average value 55.50 D.