How to Choose Your Magnification Loupes – Part II

This blog post is an continuation of our previous post.

Test the working distance
The working distance refers to the distance between your eyes, and the patient’s mouth. You can measure this while assuming your normal working position, making sure you are: comfortable, that your back is straight, and that you are not leaning forward too much.

Perhaps you could ask someone to assist you in this procedure. You can also use the following overview to help determine the best working distance for your personal needs:

Height:
<170 cm (5ft 7 in) 170-190 cm (5ft 7 in to 6ft 4 in) >190 cm (6ft 4 in)

Sitting:
340 mm (14 in) 420 mm (16 in) 500 mm (20 in)

Standing:
420 mm (16 in) 500 mm (20 in) 550 mm (22in)

Check the field of view.
The field of view is the area that is visible and in focus, while looking through the loupes. A larger field of view is preferred, as there is a larger area visible through the loupes, and there is less need to move your head around . The size of the “field of view” also corresponds directly to the magnification factor.

A loupe with a lower magnification factor will have a larger field of view, and vice versa. All loupes utilize high performance lens systems that provide an extra wide field of view (up to 125mm / 4.9 inch).

Check the depth of view.
The depth of field is the depth of the area that is visible as well as  in-focus, while looking through the loupes. A larger depth of field is preferred, as there is a deeper area visible through the loupes. The size of the “depth of field” corresponds directly to the “working distance”.

A loupe with a longer working distance, will have a larger depth of field, and vice versa. The size of the “depth of field” also corresponds directly to the magnification factor.

A loupe with a lower magnification factor, will have a larger depth of field, and vice versa. All loupes utilize high performance lens systems that provide an extra large depth of field (up to 120mm / 4.7 inch).

Test the weight of the loupes.
Weight is an important factor when choosing a new loupe, especially if the loupe is to be used for longer periods of time. Lightweight loupes are more comfortable, and in the long term, will reduce tension and other complications. Ultra light weight loupes, offer the maximal comfort. All loupes utilize extremely light weight materials.

Regarding the Keperlilean loupes, these loupes are heavy. When choosing these, opt for the headband style, which will be comfortable for using a long time.

Spectacle Surgical Loupes: An Essential Piece of Equipment for Surgeons

Over the years, we have seen a breakthrough in many surgical procedures. Surgeons nowadays need to work with precision where during an operation intricate details can be observed. In order to be sure that surgeons can meticulously observe all relevant details, spectacle surgical loupes are used. These are magnifying aids that are used without the using hands.

Loupes used by dentists as well as surgeons for during vascular, plastic and ENT surgery. In those cases, loupes are needed to view small arteries, nerves and tendons.

Surgical loupes have a range of magnifying degrees and the amount of magnifying necessary is dependent on the type of surgery being performed.

In general surgery, the degree of magnification required is around 2.5x. In specialized surgery, a higher magnification loupe of 5.5x is normally used. In general cardiac surgery, a loupe of 3.5x is common, while 4.5x to 5.5x loupes arte used in neurosurgery or tendon and hand operations. Loupes are also an integral part for screening sutures in micro surgery,

Magnification in loupes ranges from 2.5x to 5.5x with options for even higher degrees of magnification. All surgical loupes of AdmetecVision have exceptionally high resolution which enables surgeons to have a clear picture of the affected area when operating. This is possible due to the high grade lenses which are an integral part of the loupe. Light weight loupes are popular since they are more comfortable to wear during operations.

Surgeons and dentists are always checking the intensity of vision of their loupes. Although a wider field allows more clarity, any increase in loupe magnification also lowers the area of vision. Surgeons and dentists also have to decide how they want their loupes be mounted, e.g., spectacle, flip-up or head band.

Today surgeons need surgical loupe, regardless of the kind of surgery they are engaged in. They therefore need to conduct research on loupe manufacturers such as AdmetecVision before deciding which loupes will suit  their particular expertise.

A Short History of Surgical Loupes

In their book The History of Modern Cataract Surgery, Marvin L. Kwitko and Charles D. Kelman describe the history of surgical loupes.

The first surgical loupes date back to 1876 and consisted of simple loupes attached to a spectacle frame or a headband. These were made of convex lenses that were decentered to allow convergence and to use the prismatic effects of the periphery. Carl von Hess used such a loupe together with an electrical illumination device attached to a headband.

In 1886, a mechanic named Westien constructed a binocular instrument from two loupes to be used by a zoologist. Von Zehender later attempted to modify these loupes for use in ophthalmology, and the Zehender-Westien double loupe was born. It had a firm base and a lens for lateral focal illumination.

Further development of a binocular magnifying instrument progressed along two pathways: one for diagnostic purposes and one for surgical use, leading to the eventual development of the slit-lamp and the corneal microscope.

By 1912, Von Rohr and Stock had constructed a spectacle loupe that was lighter and less magnifying than Westien’s. It had a working distance of 25 cm and a magnification of 2X. Gullstrand was the first to use these loupes starting the development of a binocular loupe that could be attached to spectacles and bifocals. This model is still used today by ophthalmic surgeons for a variety of surgical procedures. By simply tilting his or her head, the surgeon can view the field either through the spectacle lens or through the loupes. This allows for only using the magnification when needed. However, It a magnification of more than 2X was not practical, due to the fact that the slightest movement of the head would cause large movements of the image in high magnification. Furthermore, optical principles prevented a magnification of more than 2X with these loupes.

For years, the selection of loupes was limited, but loupes from innovators such as Admetec-Vision are lightweight and have stylish frames.  Magnification loupes range from entry-level models to loupes with highly sophisticated optical systems. So the choice is yours.

(To read the original chapter online on Google books, please click here)

About Telescopes-Through-The- Lens or TTL Loupes

TTL (telescopes through the lens) means that the telescopes are positioned in the lens of the spectacles supporting it in such a way that the eyepiece is at an optimal distance from the pupil with nothing in-between. This gives excellent optical quality and a wide field of vision.

Opting for TTL loupes comes down to a personal preference.  TTL loupes are usually lighter and less bulky than flip-up loupes. In contrast to flip-ups, TTL loupes cannot be moved out of the line of sight. The main benefit of TTL loupes is their closer position to the eye. This enables a wider field of view. The only disadvantage is that peripheral vision is less when reaching for instruments. TTL loupes are customized to the needs of the individual dentist, surgeon, veterinarian, or dental hygienist.

AdmetecVision’s loupes are highly customizable, e.g., for inter-pupil distance, working distance and declination angle. Other custom design settings include dioptric correction which is a demand from any medical professional using his/her magnification tool for long periods of time.

What are the main benefits of dental or surgical loupes? To quote dentist Dr. Jörg Werner:

1)         to see more is to know more

2)         to see more enables more accurate treatment

3)         to see more translates into crystal clear precision

4)         to see more leads to higher quality

5)         to see more means better control

6)         to see more enables application of the latest treatment methods

7)         to see more benefits patients

Want to know more?

Contact AdmetecVision at www.admetec-vision.com, or call us at our toll-free number: 1-888-670-5063. You can also email us at contact@admetec-vision.com. Ready to make a purchase? You can order now online!

Three Easy Steps for Choosing Your Surgical or Dental Loupes

Step 1

As a surgeon, dentist, veterinarian or other medical professional, you need first to decide what the appropriate level of magnification is best suited for your work. A higher magnification will limit the depth of field to some extent.

There are three magnification levels:

2.5x which enlarges the focal object approximately 2.5 fold.
This is the common standard for dental professionals. It is recommended for
first time loupe users, since it gives the widest field of view.
This magnification allows for viewing the entire work area (e.g., the entire mouth) at close range.

3.0x which enlarges the focal object approximately 3 fold.
This level of magnification is especially suitable for those professionals whose work requires a more detailed view.
This magnification is popular with experienced professionals who are accustomed to transitioning from magnified to non-magnified vision.

3.5x which enlarges the focal object approximately 3.5 fold.
This is the highest magnification rate available. It is typically used by professionals when performing surgical procedures.
Since it provides a highly focused field of view, it is not recommended for all-day use.

Step 2

The next step is finding the right working distance. To determine the optimal working distance, you as the wearer must measure the distance between the tip of your nose and the focal object.
There are four available options: 340mm; 420mm; 500mm; 550mm.

Step 3

Finally, you need to select the frame that suits you best in color and style.
AdmetecVision offers two types of frames, both available in a wide variety of colors.
The UltraLight frames are light in weight and most appropriate for users who want to wear the loupes throughout the day. It is also the preferred option for those professionals who suffer from back pain or stiffness.

Want to know more?
Contact AdmetecVision at www.admetec-vision.com, or call us at
our toll-free number: 1-888-670-5063. You can also email us at contact@admetec-vision.com.
Ready to make a purchase? You can order now online!

Why surgical or dental loupes are necessarily – just ask AdmetecVision!

Surgical or dental loupes help surgeons and dentists to maintain an ergonomic posture while performing the most difficult surgeries. Surgeons and dentists love them since they reduce eye, neck and back strain. A surgeon or dentist need not change the position of his or her body to view the area they are working on.

The main cause of health problems for surgeons and dentists is the necessity to frequently changing the position of his or her body during surgery or treatment. Surgical and dental loupes therefore improve ergonomic posture. Working for long hours in a particular position takes its toll on the body of surgeons and dentists.

Furthermore, the use of surgical and dental loupes reduce eye, neck and back fatigue of surgeons and dentists. With loupes, they can get relief from eye, back and neck fatigue. Over time, surgeons and dentists are exposed to various heath problems such as arthritis and frozen shoulders. As a result, loupes have become necessary.

The loupe helps to view the working area in a magnified manner, which
enables better examination and diagnosis. But a loupe also enhances the view of
instruments. This especially helps surgeons to get an enhanced view of
instruments and thus improve their performance.

But also patients like their surgeons and dentists to use loupes, since it
reduces the chance of mistakes and thus enhances the quality of treatment.

In short, surgical loupes and dental loupes offer a number of benefits and should
therefore be incorporated in daily professional lives to ensure the health of
surgeons and dentists as well as optimal treatment of patients.

Want to know more about surgical and dental loupes?
Contact AdmetecVision at www.admetec-vision.com, or call us at our toll-free number: 1-888-670-5063. You can also email us at contact@admetec-vision.com. Ready to make a purchase? You can order now online!