The best method to evaluate loupes optic quality is to look at an object with straight black lines. The most common signs of poor quality optics are low resolution as shown in figure A, and image distortion as shown in figure B. When viewing through high quality loupes all lines will appear straight and clear, as shown in figure C.

Is the ability to define small details. Not all surgical loupes are made the same. Companies use different glass, different coatings on that glass, and different procedures to arrive with the finished product. When evaluating resolution it is important to make sure that the image is crystal clear from edge to edge.

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.

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 loupes image of the Fig. C.

Of frame can be determined by look at the material of the frame and tightness of all the components.

Requirments are determined by the type of tasks you perform while wearing your loupes. Most of the first user mostly believes: " The more magnification the better." Fact is: "As much magnification as necessary, as little magnification as possible." just about sums it up correctly. If you are dental hygienist a first-time telescope user, you might only need a 2.5x magnification loupe system. This provides a good balance between the magnification power and field size. According to our extend experience and feedback from our customers a magnification factor of 2x or 3x is sufficient for most dental procedures and needs of the dentist considering all relevant factors. If ypu are an experienced user, then you need a loupe system of 4.0x magnification or more. But if you perform surgical tasks like root canal procedures, then the magnification increase that you want will really depend on your specialized needs.

Is important not only for quality of the image, but also for the comfort and safety of your patients. Optimized light transmission means that you can work with less light, reducing your eyestrain while minimizing the exposure of your patient to bright light.

Is defined as the the range of distance that is in focus without moving your head. The ergonomic benefits of a large depth of field are clear because thete is less need to move your back, neck and head to work effectively. This is the range of focus that the loupes are able to deliver. The greater the depth-of-field, the easier it is to move around the patient.

Refers to the amount of the original object that you can see from left to right and top to bottom. Different applications have different needs. A larger field of view is not always the better choice. For instance, an endodontist might prefer to see only the small area being treated, whereas a periodontist would like to see as much of the surrounding area as possible.

Requirments varies by the user's height and body type, and also by how you sit or stand while work with your patients. The best method of determining your working distance is to measure the distance between your eyes and the patient's teeth, while sitting or standing in an ergonomic position in your normal workspace. The working distance must be kept relatively constant. This leads to a better posture.

TTL stands for "Through The Lens", It means that the loupes are glued to your lens. Although TTL is slightly lighter than Flip-Up system, it can not be moved from line of vision and the user can not make adjustments to the angle of declination to accommodate for the patients's position. And since each pair of TTL loupes is custom made, it is much more expensive than the Flip-Up loupes.

Is determined by the weight of the whole system and the ergonomic design of the frame. Our frames are made from titanium, one of the lightest and toughest material used for high end glass which will ensure the ultimate comfort fot long periods of usage.