IOL Calculation

in Nashville, Tennessee


As part of our outreach initiative, we offer a free consultative service to surgeons interested in fine-tuning methods of corneal power measurement for IOL calculations.  You may make appointments for this service by calling 615/321-8881 for patients who live in the area, or send us the required information via email or by fax 615/321-8874.

The following data is required for the clinical history method:

  OD OS
K's Pre-Op    
MR Pre-Op    
MR Post-Op    
K's Post-Op    

Refraction derived Keratometry readings at the spectacle plane, and corneal plane can be calculated using the clinical history method.

Gas perm lenses can be used to determine the corneal curvature. Known contact lens power and base curve, when combined with the over-refraction in the corneal plane, allow calculation of the corneal curvature.

Adjusted Effective Refractive Power (Eff RPadj): Measurement of post-op corneal power using the EyeSys corneal analysis system provides the Eff RPadj in the Holladay diagnostic summary. [Eff RPadj = Eff RP - (0.15 x ΔMR). (Mean SE +0.88+/-)]

Maloney Method: Central corneal power is determined using the Humphrey Atlas topographer, with modification of the formula: CP = (central topographic power) x [376/337.5]) - 4.9.

Orbscan IIz: Two measurements using the Orbscan IIz, 2 mm total mean power calculation and a 4 mm total optical power calculation.

If you're interested in our IOL calculation services, choose experience and technology. Choose Wang Vision Institute of Nashville, Tennessee. Call or email us today.



Dr. Wang, Tennessee LASIK Surgeon - Nashville LASIK Surgery

Contact us

Wang Vision
615-321-8881
1801 W. End Ave., 11th Floor
Nashville, TN 37203

The Wang Vision Institute provides laser vision correction & LASIK eye surgery to patients in the Nashville, Tennessee area. This site is for informational purposes only. It is not intended to be medical advice. If you would like professional medical advice about any laser eye surgery procedure, schedule an appointment to join our next Free LASIK Seminar in Nashville, TN.