Choosing a Dermatoscope: The DermLite Range Compared

Dermoscopy improves diagnostic accuracy for pigmented lesions substantially over naked-eye examination. The instrument decisions come down to four things.

1. Polarised, non-polarised, or both

Non-polarised requires contact with the skin and a fluid interface (gel or alcohol). It shows superficial structures well — milia-like cysts, comedo-like openings.

Cross-polarised cancels surface reflection optically, so no fluid and no contact is needed. It shows deeper structures — vessels, blue-white areas, collagen.

They are complementary rather than competing: some features appear only under one. Hybrid instruments that toggle between both are the sensible buy if dermoscopy is a routine part of your practice.

2. Contact or non-contact

Non-contact polarised examination is faster (no gel, no cleaning between patients) and avoids compressing vessels, which matters because pressure blanches the vascular patterns you may be trying to assess. Contact examination gives a steadier, more consistent image.

3. Magnification

10× is the standard for dermoscopy and what published criteria assume. Higher magnification narrows the field and is rarely necessary for lesion assessment.

4. Imaging

Phone and camera attachments let you photograph lesions for records, comparison over time and referral. Serial imaging is genuinely valuable in monitoring changing lesions, and a photograph in a referral is worth a paragraph of description.

Check the adapter fits the specific phone model you use — adapters are device-specific and phones change.

Practical points

• Charging. Rechargeable units need a base on the bench; confirm what ships in the box.
• Disinfection. Contact plates touch skin and must be wiped between patients. Some models take disposable covers.
• Spare parts. Contact plates, covers and charging bases are model-specific.

The DermLite range is in 3Gen DermLite and diagnostic equipment.

Equipment guidance only. Dermoscopy requires training to interpret; the instrument does not make the diagnosis.

This article is part of our guide to Building Your Diagnostic Kit: A Guide for GPs and Clinics.