###Rationale: 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)

###Answer: OPTION A IS CORRECT.
###Question: SRK formula is used to calculate -
###Options:
A. Power of intraocular lens
B. Corneal curvature
C. Corneal endothelial cell count
D. Extent of retinal detachment
