This Iphone app is designed to help ophtalmologists get the best subjective refraction in patient with keratoconus. Due to the complexity of aberrations produced by this pathology, usually refraction is one difficult task.
A good visual acuity measure is important on those patients as this information is usually required to decide keratoconus surgical treatment.
The calculator has been developed based on years of practice and several papers previously published.
To use this calculator the ophtalmologist will need keratometry, uncorrected visual acuity and keratoconus topographic pattern