Loupes for dermatologic and Mohs surgery

Why dermatologic surgery is its own fit problem

Most loupe advice is written for the operating room: standing, a longer working distance, and a few long cases. A dermatologic surgery day is the opposite. You sit close to the patient, often leaning toward the face or scalp, and you repeat the same short procedure many times. A loupe measured for an operating table is focused too far away, so you lean in to find focus, which is exactly the posture that causes the trouble.

• Measure your working distance seated, at the chair or table height you actually use, with your elbows where they sit during closure.
• Seated distances are usually shorter than surgical defaults. If yours is long because you stand, measure standing.
• If you split the day between seated Mohs stages and standing cases, Medusa adjusts from 300 to 600 mm in one pair.

What the ergonomics research shows

Musculoskeletal pain is common in this specialty. A 2010 survey of American College of Mohs Surgery members found that a large majority reported musculoskeletal symptoms, most often in the neck, lower back and shoulders, and that most were not using ergonomic changes in their practice. An earlier Mayo Clinic study of 17 dermatologic surgeons found neck pain was the most common complaint, more often in surgeons who worked seated, while low back pain was more common in those who stood.

• The practical lesson is the gaze angle. Ergonomic guidance from that work suggests keeping your line of sight roughly 15–30° below horizontal rather than bending the neck to look down.
• A loupe with a steeper declination angle lets the eyes look down while the head stays closer to upright.
• Loupes are not a treatment for neck pain. Chair height, patient positioning and breaks between stages matter as much as the optics.

Source: Liang CA et al. Musculoskeletal disorders and ergonomics in dermatologic surgery: a survey of Mohs surgeons in 2010. Dermatologic Surgery, 2012. See also Esser AC et al., Dermatologic Surgery, 2007.

Magnification: lower than you might think

Skin surgery rarely needs the 4.0x–6.0x that vascular or hand surgeons use. A wide field matters more, because you judge tissue movement, tension lines and the whole defect at once while you plan a repair. Most dermatologic surgeons work comfortably between 2.5x and 3.5x, and step up only for fine periocular, ear or graft work.

• 2.5x keeps the whole of a nasal defect in view while you design the repair.
• 3.5x is the common upgrade for fine closure and small flaps.
• Above 4.0x the field narrows enough that planning a flap gets harder, not easier.

Light, or the room light?

Procedure room lights are usually enough for excisions, but your own head blocks them once you lean over a small facial defect. A loupe-mounted light keeps the field lit along your line of sight. It also adds weight to the frame, which you feel over a full day of stages.

• Decide on a light before the loupes are built, because the mount is fitted to the frame.
• Corded lights keep weight off the nose; cordless lights are simpler when you move between rooms.
• Choosing a light: Dental loupes with light.

Where HeliosX fits

Every HeliosX pair is built to the pupillary distance and working distance you measure, and we review the measurements before production. Prices are published, so you can price a complete order before you speak to anyone. Every model’s frame choices are included in the price.

• Galileo: Galilean 2.5x–3.5x, six lightweight, comfortable frame styles in metal and other materials, in finishes from black to gold, every one included in the price, $795–$825. Newton is the lower-priced Galilean option.
• Apollo: ergonomic prismatic 3.0x–6.0x for a more upright head, $1,695–$2,070.
• Reconstructive surgery in more depth: Best loupes for plastic surgery.