TY - BOOK AU - Hoda Ahmed Badawy AU - Rania Mohammed Sobhi , AU - Tamer Ismail Gawdat , AU - Yehia Mahmoud Salah Eldin , TI - Update in technology of femtosecond laser to correct refractive errors and preshyopia / PY - 2011/// CY - Cairo : PB - Hoda Ahmed Badawy , KW - Anatomy and biomechanics KW - Comparison of femtosecond laser and mechanical microkeratome KW - Overview of commercially available femtosecond laser N1 - Thesis (M.Sc.) - Cairo University - Faculty of Medicine - Department of Ophthalmology; Issued also as CD N2 - The invention of the femtosecond laser technology has allowed great advances in the field of corneal surgery . The femtosecond laser uses ultra - short pulse duration to create photodisruption a process that allows corneal tissue to be cut at precise depths and in various patterns with minimal collateral tissue damage for which five types the femtosecond laser systems are available in the refractive surgery market ER -