<prompt> SRK formula is used to calculate -Power of intraocular lensCorneal curvatureCorneal endothelial cell countExtent of retinal detachment  <response>: Intraocular lesn power calculation:- Which requires Keratometry K, Axial length of eyeball or Biometry L and a constant A. It is calculated SRK formula :- Ref: Yanoff; Jay S. Duker 2009 Ophthalmology 3rde p.416-419 