Refractive Surprise Analyzer & Second Eye IOL Power Calculator

Here is a tool that will help you to analyse the root cause of refractive surprise (Refractive surprise analyzer) and what you could do for the second eye by taking into account the refractive surprise of the first eye.

This tool helps you to analyse what may have gone wrong that led the patient to land up with a refractive surprise. It also helps you to calculate the new IOL power based on the refractive surprise in the first eye.

How to use the QuickGuide Refractive Surprise Analyzer:

Step 1

Step 1-

a) Enter your targeted refraction values against the IOL power for which you had a refractive surprise.

b) Enter the observed subjective refraction (spherical error)

c) The Absolute error will be auto populated

d) Based on the absolute error the IOL power for the second eye will be suggested. For this you will have to enter your targeted refraction for the second eye and the corresponding IOL power.

e) The new IOL power taking into consideration the first eye refractive surprise will now be provide as an output.

Step 2

Step 2

a) Enter pre operative corneal readings of the operated eye.

b) Enter the corneal readings of the second eye (non operating eye). In case this eye is a pseudophakic eye, enter the details accordingly.

c) Enter the post operative corneal readings four weeks from the surgery of the operated eye that had a refractive surprise.

d) If you have total keratometry or TNP or TCRP values of the operated eye, enter those. This will help us to understand any deviation from normal A/P ratio.

Step 3

Step 3

a) Enter the pre operative (operated pre) axial length of the eye you had refractive surprise

b) Enter the pre operative axial length of the other eye

c) Enter the post operative axial length of the pseudophakic eye. Make sure your post operative measurement is in the pseudophakic (Acrylic) mode.

Step 4

Step 4

a) Enter pre operative ACD and Lens Thickness (LT) details of the operated eye

b) Enter the actual lens position (ELP) of the IOL post operatively.

c) A predicted ALP/ELP will be auto populated. This gives the analyser an understanding of the deviation of actual lens position from the predicted values.

Step 5

Step 5

a) Enter pupil diameter at the time of pre operative biometry for both eyes. This is optional.

b) Press the Analyze icon

Note: The QuickGuide Refractive Surprise Analyzer does not store data.