Capillaroscopy is a non-invasive, easy and safe diagnostic technique designed to evaluate small vessels of the microcirculation in the nail fold. It can reveal both the general architecture of capillary rows and fine details of particular vessels.
The AF4115-N2UT maximum magnification of 220x is the recommended choice for its versatility and ease of use. If measurements are needed, then the AF4515-N2UT which offers AMR (Automatic Magnification Reading) is the recommended model for more accurate and easier-to-perform measurements.
Selecting the right scope
Handheld digital video capillaroscopes such as the Dino-Lite AF4115-N2UT (10x – 220x), AF4515-N4UT (430x – 470x), and AM4113-N5UT (500x), capillaroscopy provide precise qualitative and quantitative evaluation of the microcirculation and is a valuable tool in a rheumatologists’ daily practice.
The AF4115-N2UT and AF4515N-2UT with a maximum magnification of 220x is the recommended choice for its versatility and ease of use. If measurements are needed, the AF4515-N2UT offers AMR which allows for more accurate and easier-to-perform measurements. Measurements help determine the number of capillaries, whether they are normal, abnormal, dilated, or oversized to identify diseases such as scleroderma. Both models can be used in any situation, from bedside examinations to patients with severe flexion contractures. The new WF4115-N2UT(W) version offers Wi-Fi wireless connection for added portability.
Keep in mind the use case for a scope is usually for quick simple examinations, therefore we highly recommend the use of the AF4115N2UT or AF4515-N2UT (both models are 10x – 220x) as opposed to the higher magnification microscopes unless the high magnification is absolutely necessary. High magnification use is a lot more involved, requiring absolute stability, and more user patience as the focal plane is much thinner, however, with longer user experience, the high magnification use is possible.
Best Image Quality: A drop of paraffin oil, glycerine, or baby oil can be applied to the nail fold before examination in order to enhance transparency and provide the best results.
Exam tips: During routine examinations, each finger (excluding the thumbs) are examined using the common magnification range between 50x – 220x. This range shows the general shape of the terminal capillary row and also the details of a single capillary can be assessed.
Documentation: The Dino-Lite allows the captured images to be stored through the included software and used for comparison if the patient requires subsequent examinations.
Cleaning: All Dino-Lite microscopes are made with durable material that can withstand repeated cleaning. Our white body models are made with special medical grade ABS plastic housing to be even more resilient. For all models, it is recommended to use alcohol free cleaners. Sani-Cloth wipes such as these are a popular choice: https://www.amazon.com/dp/B00KMZ7KMO
The most important indications for performing capillaroscopy include differential diagnosis of primary and secondary Raynaud’s phenomenon, as well as the assessment of scleroderma spectrum disorders. In systemic sclerosis, capillary abnormalities appear and evolve in a clearly defined sequence called the scleroderma pattern, which correlates with internal organ involvement.
How to View Capillaries using Dino-Lite: https://youtu.be/mjf3DsI1Zuo
Dino-Lite Capillary: https://www.dinolite.us/applications/capillary
Medical Journals & Abstracts:
- Study: Nail fold capillaroscopy alterations in androgenetic alopecia
- Clinical Nailfold Capillaroscopy Using Dinolite Microscope in Patients with Systemic Sclerosis
- Nailfold Capillaroscopy With USB Digital Microscopy in Connective Tissue Diseases: A Comparative Study of 245 Patients and Healthy Controls