SRK formula is used to calculate -
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 3rd/e p.416-419)
Power of intraocular lens
Corneal curvature
Corneal endothelial cell count
Extent of retinal detachment
Lens