Ways to Guide Customers to Choose Frames Based on Lens Power
Lens order, the order in which optical lenses are arranged in an optical system, plays a key role in determining how light passes through each lens and is subsequently focused on each lens. It is important because it determines the image quality of a given optical system.
So do you know what you should look at or look for once you get your lens order? Read on and I'll show you some examples so that you'll know the ways to guide your customers to choose frames based on lens power.
For Newbies Something You Need to Know
Here is one of the most important rules you must know. The number 1 rule to think about when you are talking about frame choice and lens power. That is: as power goes up, the frame size goes down. Keep that in mind and it will never, ever let you down.
Scenario 1: Low Powers <1.50
Let's look at Table 1.
The customer got a right of -1.25 sphere and in the left of -1.00. They are very low powers. What it means to opticians is that when you are going to guide the customer towards frame selection, you can choose whatever your customer wants. The power at this stage is not going to matter. So if your customers want to follow trends and choose the hottest styles, just go for it!
Scenario 2: Strong Power <3.00
Look at Table 2.
You can see that the customer got -2.50, -0.75 at 90 on the right and -2.50, -0.50 at 95. This should be thrown into less than three categories. Though the condition may get a little bit confusing, the customer is right there in the middle of -2.50. So just choose the one customer likes.
Scenario 3: Higher Power >3.00
Take a look at Table 3.
Right, -5.50, -1.75 at 90 and left -6.50, -1.50 at 95. In this case, the customer usually has the habit of wearing contact lenses. However, as opticians, you can't hurt your customer's feelings. What you should do is advise him or her to choose frames as small as possible. After all, your customer knows how bad the eyes are.
If your customer wants a specific style, then sorry, be sure to pick out a small pair of glasses that suits him or her well.
Scenario 4: First Progressives
Look at Table 4. At the bottom, it says "first progressive".
So when your customers have a progressive, what should you do?
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If you are a newbie, you are most likely going to want to guide first before having them bring it over to the dispensing table no matter what condition you are under. And this is what you are going to say, "We need a little depth down towards your cheek to make that progressive lens work." Because you are looking for that minimum lens height, the height of 18.
When you are an expert, then you will have more confidence to face your customers. No matter if you are in an independent shop or your customers actually have their favorites, you can do it well. Just bring those frames over with that narrow orbit and have them tried. If it doesn't work, you have the confidence to say " I know you like that, but we just can't squeeze that progressive in there. Let's look at this one you like." And you can find a lens with a shorter corridor, a minimum fitting height of 15, 16 or 17.
Scenario 5: Progressives
Table 5 tells a progressive.
Just look at your customer, it is possible that he or she is already familiar with progressive lens. As they get older, that ad power will increase and will have more power in a shorter distance with those short corridor lenses. It's going to be uncomfortable for them because of the 18 minimum fitting height, so that you can spread that -2.50 out over a nice range.
Scenario 6: ST Lined Bifocal
Look at Table 6. It says "wears straight top 28"
You can advise your customer choosing the stuff that's heavily cut nasally. Somewhere on the straight top, depending on customer's PD, may be cut away.
Scenario 7: Sunglasses
Look at Table 7.
Don't be puzzled by "sunglasses". Just take the one that most looks like traditional sunglasses, and choose a frame that is big enough to give your customer full coverage to protect the eyes. Maybe doing polarized, so you can choose a plastic frame.
Scenario 8: Power & Position
Table 8.
The point here is kind of split in right eyes while the left eye is starting to creep up. In this case, you need to consider power and position and PD.
If you get -2.25, -1.25 at 95, then that is less than three. It's in the narrower part of the frame and thickness is probably not going to be a big issue. However, if you run a flat transposition in your head, -2.25 plus -1.25, that is -3.50. It is not easy to find the right place.
As for PD, you should check carefully with your customer. Lenses and the edge thickness will vary with PD.
Conclusion
After reading these examples, do you have a clear understanding of how to choose frames for customers according to lens power? Don't hesitate any longer, quickly choose the glasses that best suit your client's needs!