Analysis of Results

For each defocus curve, the system will calculate the area under the curve in the total range and in the far, intermediate and near regions. It is recommended to measure in a range of at least between +1.00 and -4.00 D so that all areas are calculated. 

The App will also detect when a defocus curve is shifted and calculates the effective addition after detecting the two extreme peaks. For extended depth of focus behavior, the effective addition shown will be 0 D. A high number of shifted defocus curves are indicative of an error in the calculation of the subjective refraction at infinity.

In the Statistics section you can filter all the exams associated with a certain protocol. When the protocol is for example the name of a Multifocal Intraocular Lens we will be able to know the average performance with that lens for patients measured in the same conditions.

The number of detected cases will appear next to the protocol name in the result screen (n). Select the buttons at the top to filter by:

• Curve Type: Visual Acuity (VADC) or Contrast (CSDC).
• Conditions: Monocular (Mono mixes RE and LE), right eye (RE) and left eye (LE) separately, and binocular conditions (Bino).
• Correction: With the patient corrected in infinity (CD) or with the patient uncorrected (UD)
• Shift: Only include the curves that are not shifted (No shift) or all (All).

Keeping the additional data filled in an organized way will allow you to obtain greater reliability in the analysis of your results. Visual performance may vary with variables such as pupil diameter, patient age, or months of follow-up.

Within the Statistics section, you can apply special filters to have a better knowledge of each multifocal procedure. The pupil must be measured under the same lighting conditions as the curve (approx. 80 - 100 lux ambient lighting). In case you use a system that measures photopic and mesopic pupil diameters you can use the average between both measurements.