Download or read book Progressive Keratoconus: Insights into Etiopathogenesis, Diagnosis, and Treatment written by and published by Frontiers Media SA. This book was released on 2023-11-29 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the early stages of keratoconus, visual acuity may be normal and slit-lamp examination is not able to identify the disease phenotype. Early diagnosis of keratoconus is of major importance for effective treatment. That is why corneal topography and tomography has become the gold standard examination for diagnosis of corneal ectasia. Corneal topography is a non-contact imaging tool that gives information about the anterior surface of the cornea. Corneal tomography evaluates both anterior and posterior corneal surfaces and is considered mandatory for preoperatory evaluation before refractive surgery. Until recently, Kmax was the main indicator for the progression of keratoconus, but recent studies showed that posterior elevation represents the first signal of an ectatic corneal disease. Cross-linking is considered the gold standard in the treatment of keratoconus and newer techniques allow this procedure to be selective on the areas of corneal thinning.