3.
Patient Data/Test Parameters Eye Tested Type of Test Date of Test Time of Test Fixation Monitoring Patient Name Patient DOB Pupil Diameter Visual Acuity Glasses Prescription Age
Can look for low or high values or pattern of loss
6.
Grey Scale Plot
Grey Scale representation of Numeric Data
Not Age Corrected
7.
Total Deviation Plot
Total Deviation Probability Plots show all locations that are outside of normal limits
Threshold Sensitivity is compared at each point with Age-corrected Normal values . The difference is shown on the Total Deviation Decibel Plot.
Negative Values – Below Median Age Corrected Sensitivities
Positive Values – Above Median Age Corrected Sensitivities
Probability Plot shows points that are worse than those found in 5%, 2%, 1% and 0.5% of normal patients of same age.
8.
Pattern Deviation Plot
Single Most Useful Analysis (Heijl/Patella)
Shows Sensitivity loss after an adjustment has been made to remove any generalized depression (i.e. Cataract) .
Negative Values – Below Median Age Corrected Sensitivities.
Positive Values – Above Median Age Corrected Sensitivities.
Probability Plot shows points that are worse than those found in 5%, 2%, 1% and 0.5% of normal patients of same age.
9.
Mean Deviation
Mean deviation (MD) shows how much, on average, the whole field departs from normal and is a weighted average of the decibel deviations shown in the total deviation plot.
Normal Zero to - 2 dB
More negative value as Visual Field worsens
P values are shown next to MD values that are significantly outside the normal range.
10.
Pattern Standard Deviation
Pattern standard deviation (PSD) reflects irregularities in the field, such as those caused by localized field defects.
Normal Zero to 1 dB
More positive value as Visual Field worsens
P values are shown next to PSD values that are significantly outside the normal range.