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Priority to Pupillary Distance:

The points of convergence between the two disciplines are real through a common purpose, that of optimising the size of the lens; hence the fundamental importance given to PD from the start and respect for the eyebrows and cheekbones. Therefore aesthetic and corrective constraints come together. We have established a direct relationship between the size of the frame and the size of the PD, while giving the width of the hinge a fundamental role in the case of a small pupillary distance relative to the volume of the face.
This approach will have two important consequences directly related to the value of the correction:
• a weight reduction that improves the stability and comfort of the glasses.
• not causing an unsightly magnifying glass effect, if one needs to use glasses with a 1.5 index for image magnification that cannot be achieved with the use of glasses with greater indices.
This approach is all the more important in the case of image magnification using pre-calibrated glasses with a 1.5 index. Glasses with higher indices cannot address this issue.
And with the significant advantage of allowing a reduction in weight, thereby improving the comfort and stability of the client’s glasses.

Respect for the cheekbones:

To maximise comfort in the case of high degree ametropy or the use of progressive lenses.
The requirement established in Optomorphisme not to choose frames that fall below the cheekbones requires careful attention to be paid to the type of progressive lenses that will be selected. Thus in the case of very high cheekbones we will not hesitate to use very short progressions (8mm), knowing that this choice implies control of all of the correction, with verification of the power of adding the Harmon remote, or according to specific needs.
Besides the aesthetic gain from keeping one eye “centred” in their glasses, this respect of the cheekbones serves primarily to ensure the stability of the frame, with no image jump induced by movements of the cheekbones.

Security provided by the judicious choice of the frame in complex cases:

If needed in NON PRESBYOPIC subjects, rehabilitation of binocular vision through the use of progressive lenses, or alleviation of a tone deficit in the accommodative process in students for example, it will be necessary to use progressive lenses with strong peripheral distortion (old style).
The optimised size of the lens size will then make it possible to foresee a slight over-correction of VP, which will reinforce the desired stimulation.

Ease of choosing frames in the case of external constraints:

Finally, to return to more everyday situations of average even severe ametropies conflicting with fashion trends, recommended guidelines will be much better understood and accepted, through the options the Optician will have thanks to their knowledge of Optomorphisme, playing on the position and width of the hinges so that the glasses chosen are always well integrated with the width and shape of their client’s face!

To finish with “Innate Good Taste”

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The positioning trap of the optician designer

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“Matches” between Optometry and Optomorphisme

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