When purchasing a new loupe, it is important that you choose the correct magnification and working distance in order to ensure that you work in complete ergonomic harmony with your new loupe. Assuming the correct working posture reduces eye strain, back / shoulder / neck tension, and the related stress-induced headaches. Less known but no less important is the psychological impact: good ergonomics improve information processing and decision-making.
1. loupes optics lens
The best method to evaluate loupes is to look at an object with straight black lines, as below Fig.A. The most common signs of poor quality loupes are low resolution, chromatic aberration and spherical aberration.
Resolution is defined as a optical system's ability to form distinguishable images of objects separated by small distances, or to recognize fine detail. When comparing different loupes, look at the testing objects and select an area of tiny details that can only be seen with magnification.
Chromatic aberration refers to color distortion. Because each color has a different wavelength, uncorrected optics cause the various wavelengths to focus at different points in space. The first color that generally comes out of focus is blue; when looking at black lines on white paper, poor quality loupes will display a blue haze just to the side of the black lines, as depicted in Fig.B.
Spherical aberration is called to be the flatness of the image. When viewed through loupes, an object that exhibits spherical aberrations would appear to be curved or spherical, as depicted in Fig. B. The lines would not be straight, as in the original (Fig. A) or in the Careoptical loupes image of Fig. C.
Viewing colorful or complex objects such as anatomical models or the inside of your hand does not give you the opportunity to evaluate loupes for their true optical performance, as most people are not trained to see the differences on such complex images. A simple piece of graph paper, however, can reveal the difference between mediocre and high quality loupes
2. Magnification:
The level of magnification used is most often based on personal preferences. However, there are a few guidelines which could help in choosing the best magnification for your specific needs.
Our first recommendation is to choose the lowest comfortable magnification level, as this would provide the widest field of view.
Experience shows that the most commonly used and recommended magnification for loupes in different dental fields are as follows:
Specialty
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Magnification
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General dentistry, Dental hygiene, Implant:
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2.5x .3.0x. 3.5
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Endo, Crown and Bridge work:
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3.5x - 4.0x
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Lab work, Technician:
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4.0x . 5.0x .6.0
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Height
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<170 cm (5ft 7 in)
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170-190 cm (5ft 7 in to 6ft 4 in)
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>190 cm (6ft 4 in)
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Sitting
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340 mm (14 in)
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420 mm (16 in)
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500 mm (20 in)
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Standing
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420 mm (16 in)
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500 mm (20 in)
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550 mm (22in)
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The loupes from Care Optical is high quality opticsl lens with coating and light weight designing and super high quality. Visiting our website: www.optical-world.com and order directly and you can get manufacturer direct price.
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