Advanced Diagnostic Tools

Advanced Diagnostic Tools2019-02-28T12:35:12+00:00

Advanced Diagnostic Tools

How Diagnostic Tools Help Me?

Wood’s light, polarized light, video-dermatoscope, dermatoscopy, and Venoscope are first used to diagnose red spots, brown, black spots, white spots and your skin type.Wood’s Light is essential to detect skin Pigmentation in photoaging. Polarized Light is used to detect red and dark skin spots. Dermoscopy enlarge abnormalities of hair, nail and skin hundered times. Venoscope is used to see blood vessels and dermoscope to evaluate moles.

Polarized Light

Light reflected from skin has two components: regular reflectance, or “glare” arising from the surface, and light backscattered from within the tissue. The regular reflectance contains the visual cues related to surface texture, whereas the backscattered component contains the cues related to pigmentation, erythema, infiltrates, vessels, and other intracutaneous structures. Unlike the backscattered component, regular reflectance preserves the plane of polarization of polarized incident light. Thus, viewing skin through a linear polarizer, under linearly polarized illumination, separates the two components of tissue reflectance. When the planes are orthogonal, wrinkles and surface detail disappear, and an enhanced view of vasculature and pigmented lesions is obtained. Simple, clinically useful technique.

Wood’s Light

What Is a Wood’s Lamp Examination?

A Wood’s lamp examination is a procedure that uses transillumination (light) to detect bacterial or fungal skin infections. It also can detect skin pigment disorders such as vitiligo and other skin irregularities. This procedure can also be used to determine if you have a corneal abrasion (scratch) on the surface of your eye. This test is also known as the black light test or the ultraviolet light test.

How Does It Work?

A Wood’s lamp is a small handheld device that uses black light to illuminate areas of your skin. The light is held over an area of skin in a darkened room. The presence of certain bacteria or fungi, or changes in the pigmentation of your skin will cause the affected area of your skin to change color under the light. Some of the conditions that a Wood’s lamp examination can help diagnose include:

  • tinea capitis

  • pityriasis versicolor

  • vitiligo

  • melasma

In the case of scratches on the eye, your doctor will put a fluorecin solution in your eye, then shine the Wood’s lamp over the affected area. Abrasions or scratches will glow when the light is on it. There are no risks associated with the procedure.

What Do I Need to Know About This Test?

Avoid washing the area to be tested before the procedure. Avoid using makeup, perfume, and deodorant on the area that will be tested. The ingredients in some of these products can cause your skin to change color under the light.

The examination will take place in a doctor’s or dermatologist’s office. The procedure is simple and does not take a long time. The doctor will ask you to remove clothing from the area that will be examined. The doctor will then darken the room and hold the Wood’s lamp a few inches away from your skin to examine it under the light.

What Do the Results Mean?

Normally, the light will look purple or violet and your skin will not fluoresce (glow) or show any spots under the Wood’s lamp. Your skin will change color if you have a fungal or bacterial, as some fungi and some bacteria naturally luminesce under ultraviolet light.

A room that is not dark enough, perfumes, makeup, and skin products can discolor your skin and cause a “false positive” or “false negative” result. The Wood’s lamp does not test for all fungal and bacterial infections. Therefore, you still may have an infection, even if results are negative. Your doctor may need to order more laboratory tests or physical exams before they are able to make a diagnosis


You will be surprised, amazed and delighted at the performance of the Venoscope. You will not believe your eyes when you first realize that the dark line between the dual arms is the vein.

The Venoscope is the most effective and versatile transilluminator for locating those hard to find veins in IV therapy or blood draws. Make those difficult needle sticks easier and faster for the clinician, and more comfortable and safer for the patient.

The Venoscope utilizes a revolutionary breakthrough in LED technology. The patented dual arms of the Venoscope contain two white and one red LED. This combination of lights, with different wavelengths, allows the light to penetrate deeper into the subcutaneous tissue and to create the contrast necessary so that the blood veins stand out as dark lines within the illuminated orange tissue. In MSI the usage of Venoscope attribute to successful sclerotherapy and blood extraction for PRP.


Dermoscopy improves the diagnostic accuracy in the clinical evaluation of pigmented skin lesions, but it is also useful for the assessment of vascular structures that are not visible to the naked eye. As a consequence, dermoscopy has been employed more and more for the differential diagnosis of nonpigmented skin disorders, including tumors but also inflammatory and infectious diseases. This article provides a review of the dermoscopic features seen in various nonpigmented tumoral and nontumoral skin lesions as well as the dermoscopic criteria used for monitoring skin reactions to various treatments.


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