If you have a family member with glaucoma, or your routine examination indicates signs of glaucoma, our professionals will generally request for a visual field analysis (VFA) to be completed.
A VFA looks to determine whether you have any potential visual field defects by assessing how you respond to the intensity of light. If the analysis finds areas which suggest you aren't able to see light at an expected brightness, then it will indicate this area as having potential visual defects.
When testing your visual fields on our Henson 8000, a ZATA algorithm is
applied. This algorithm increases the speed of the test and analyses your
entire visual field. By increasing the speed of the test and presentations
shown, it opts for a far more accurate screening than most previous
threshold tests. Additionally, our Henson 8000 will come with further
accuracy measures, enabling our professionals to assess your responsiveness as a patient and determine whether the results are reliable.
At the end of the test you will be provided with a full report where our perimetrist or professional will discuss the results with you. In this discussion it will be explained whether the algorithm has been able to create a pattern of your defects (if any are found) and further indications of potential glaucomatous signs or any other visual defect related conditions.
Your full print report will be archived with your remaining exam content, offering a comparable analysis on your future return - a copy of this will also be made available at the time.
Please note: We recommend for all NHS patient to upgrade from their basic threshold screening (included in exam) and undergo our private computerized analysis.