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The Significance of Power Maps : The Opticians Perspective

Lens maps, such as Sphere Maps or Cylinder maps, serve as an excellent tool for optical professionals to improve the customer's visual experience. From providing a genuine assessment of old spectacles and their performance for the patient, to helping guide the best lens and frame combinations. They also ensure good lens fit and provide confirmation of the finished job. Lens Visualisation enhances the whole process with a higher level of accuracy and trust.
Let us look at some common issues that customers complain of, which standard measurement of the lenses may not identify.

Example 1: The spectacles below represent a common issue. This particular customer has had their spectacles for some time and has never found them ideal for close work. A check on the average lensmeter will likely find the expected add at the bottom of the frame, or at least close to it. However, the lens map combined with the manufacturer's lens data shows us clearly that more than half of the near zone has been edged off the frame. Meaning the customer is always going to struggle to find enough near area to read comfortably.

(Cropped Image: Captured from eMap R2 from EYOTO™)


Example 2:  Another common issue is the customer who finds the periphery blurred when driving or looking left and right. The lens below clearly shows how the distribution of unwanted cylinder power can cause issues, especially if the patient is an eye mover more than a head mover. However, they have a reasonable width of intermediate and good near zone. For a laptop user who reads this may be a great lens, if they have an alternative for driving.

Finding an alternative lens becomes easy when you know the map of the lens.


(Cropped Image: Captured from eMap R2 from EYOTO™


In contrast, below is a lens that will work far better for an eye mover when looking into the periphery. As you can see, a much flatter field of vision in distance and a nice wide near zone. But it may be necessary to discuss occupational pairs with some computer users, as the intermediate zone has narrowed considerably compared to the original.

This is an important point to bear in mind. It is unlikely that a single progressive lens will provide the solution to all the needs of a customer. It is invaluable then, that a practitioner is able to understand and evaluate the lens design to best match the Patient's visual needs.


(Cropped Image: Taken from eMap Tablet App from EYOTO™)


The use of genuine lens mapping technology provides a means for both the practitioner and the customer to understand which lenses are most likely to work best for their individual lifestyle needs. Providing the customer with the evidence they need to make an informed decision builds trust in you and your business.

Get in touch with us today, to find out more about eMap for Retail - the Lens Visualisation platform from EYOTO which is sure to revolutionise your dispensing process. At the click of a button, you can access real lens data to guide your customer to the best lens and frame choices. Talk to us today about what we can do for your business.