Part 4 Solving Problems and Adaptation Eyeglass Sale

 Solving Problems and Adaptation Eyeglass Sale

Article written by Paulus Maciel. Rights Reserved.

This fourth part of the series on troubleshooting in the sale and fitting of eyeglasses will be very useful as it will address a consumer complaint that is sometimes difficult to be cured. Discomfort glare of the lens.

When we think we just sell anti-glare technology to solve the problems of glare on the lenses of our client, he returns to the shop and complains that sees "rays of light" white or colored shaped rainbow in environments that bother much lighter.

When the lenses are exposed to a larger amount of light can arise in view of the user so-called "white halo" or "colored halos". Halos are unwanted reflections that can be perceived as both monocular binocular vision in his client.

Based on my experience in the care of complaints like these, I present the most common causes for the presence of halos on the lens:

• Absence of anti-glare technology
• Using frames "three parts"
• Residual reflection anti-glare lens
• Lack of fit in the frame

The first and most obvious cause for the emergence of a reflex lens is when it does not have the anti-glare technology. The white halos appear without an anti-reflective lens when it is dirty because when light refracts (exceeds) a surface with dirt, there is an optical phenomenon called "diffraction" which causes light rays to visualize these undesirable addition to causing discomfort, reduce the visual contrast and hence the sharpness. Scratched lenses also result in very light diffraction.

There are two solutions to people using lenses and anti-glare without attending brightly lit environments, the first is to increase the frequency of cleaning the lens and the second lens is a switch for a common lens antirrreflexo. The better the property of anti-reflective lens cleaner, lower incidence diffraction appearance of halos and therefore have the best triple protection against dirt with hydrophobic (net against dirt), oleophobic (against fingerprints) and antistatic (dust) .

When your customer chooses a frame "three parts" to ask if he attends very bright indoors because the halos appear much in this type of glasses.

Pictured beside an easel have three pieces in an environment with artificial lighting. We note that the edges of the lenses are projecting light to the desk where she rests. This is because the edges of this lens are transparent. 

Virtually all lenses in frames three pieces out of the laboratories with the mounting edges so transparent. These edges are very beautiful but are a real problem for anyone who uses this type of frame in artificially lit environments. Recalling that this effect may also occur at the lower edge of the frames of the type "nylon".

As much as this has anti-reflective lens, the technology was not applied at the edge of the lens, so no edge is anti-glare. When this edge is polished, it refracts light, caused unwanted reflections that confuse the user comfortable viewing. In this case, the light rays undesirable assume similar color to the residual reflection treatment applied on the surface.

There are two alternatives that can minimize the halos in three-piece glasses / nylon yarn:

1. Ask the assembler to leave the edges of opaque lenses. This reduces the refraction of light at the edge and consequently the halos. From the aesthetic point of view, the opaque edge is not as beautiful as polished. If you sell three pieces too, keep a sample of polished lens and a sample of opaque lens to show your client.
2. Switch the three-piece frame for a more closed, even nylon, since most of the light will refract more times at the upper edge than at the bottom.

Another aspect that can not be ignored is that lenses with anti-glare more intense residual halos provide more color on the lenses.

Pictured alongside two lenses have anti-reflective, with the upper and lower residual intense with residual heat. Photographed under artificial light lenses and zoom in applied residual reflections to illustrate the presence of halos aberrativa. You may notice that the lens of residual milder, outline the reflection of the lamp is more faithful and "light" reflex is not as aggressive. In the strongest residual lens, we can see that the outline of the lamp is no longer as true and "light" reflex is more aggressive. When the client's head moves in a well-lit environment, this can take the form of residual colored ray of light (halo).

Anti-glare lenses with mild residual, regardless of color be green or blue, are more discreet, less transparent and produce colored halos, that's are much more comfortable in environments with higher artificial lighting. Keep samples of different residual antirreflexos in your store. In the presence of the customer, place the samples on top of a black fabric and show which are the most discreet, so efficient.

The adjustment of the frame is palliative with respect to halos because both the pantoscopic angle adjustment (tilt) as the vertex distance (distance from the lens to the eye) and will minimize the effect does not resolve completely. These two adjustments in respect of the halos, the most important is the vertex distance. Shorten the distance if your client complains of halos on the lenses. Reducing the distance vertex can "take" halos for monocular vision of the user, instead of keeping in the case of a binocular distance vertex longer.

At the end of this matter, we got the following conclusions for optimal preventive sale:

1. Always practice the interview. Always interview your client and ask him about the lighting of the places he frequents.
2. Sale always anti-glare lenses for people who attend very bright indoors.
3. Always offer reflections waste more discreet, because it produce less halos.
4. Provide anti-glare lenses with triple protection against dirt with hydrophobic (net against dirt), oleophobic (against fingerprints) and antistatic (dust).
5. If the customer chooses a frame or three-piece nylon, tell him about the possibility of the presence of halos, because the anti-reflective treatment is not applied at the edges of the lenses. If you sell three pieces, preferably leave the edges dull, but before that, show how an edge is opaque to the client.
6. Let frame always adjusted, especially as the distance vertex. Decreasing this distance, you carry the halo of monocular vision to customers, reducing a little discomfort.