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One of the major concerns commonly raised by first-time users is the potential health risks of using high-intensity illumination through Light Emitting Diode (LED) surgical headlights for extended periods of time.
The use of surgical headlights is undeniably continuously gaining in popularity not only among licensed surgeons but also among medical students from all around the world. Using high-intensity illumination undeniably offers a wide range of benefits both for the practitioners and patients. Among these benefits are the elimination of shadows and the reduction of the need for the surgeon to manually adjust the direction or angle of the light which can cause distractions during operations. Other advantages of using surgical headlights are enhanced visual acuity, improved performance, and better ergonomic posture.
But in spite of the many benefits that surgical LED headlights offer, there are still a lot of practitioners who are skeptical when it comes to using high-intensity illumination. Most of these practitioners who refuse to use LED headlight for surgeons worry about the potential hazards it provides most especially in their eyes. But the big question is, are there really potential ocular risks of using surgical head lights?
Surgeons and other medical practitioners usually use surgical LED headlights together with surgical loupes, and sometimes with an overhead LED illumination for extended periods of time. Even though surgical headlight manufacturers advertise that their illumination device emits purely white light, these LED headlights still consist of two main spectral bands: the green spectral band and the blue spectral band.
The spectral components of light emitting diodes produced by different manufacturer significantly vary. Although LED headlight manufacturers strive to produce a pure white LED and suggest that their product emit bright white illumination, there are some LED light sources that have stronger blue light spectral components than the green light spectral components. High-intensity blue light is known to be highly energized. In fact, they can be close to the ultraviolet light spectrum which has been proven to be hazardous to the eyes.
While the potential ocular hazards of the ultraviolet light spectrum have been well-documented, there is only limited research and no written evidence of the potential health risks of using high intensity illuminating devices such as the portable surgical headlights. In addition, there is also very limited guidelines and standards in examining and verifying the potential safety issues regarding the surgical setting combined with LED light systems.
Surgical LED headlights have been used by many medical practitioners from all around the world for decades already. However, there was not even a single report that state that this type of light system has caused serious ocular risks. But this does not mean that you will just take safety for granted. You still have to be cautious when selecting the type of portable headlight to purchase. You also need to make sure that you pick the one that is of high quality and the one that emits a pure white illumination that ensembles the natural light. Purchasing and using low-quality headlights can cause eye fatigue and color distortion.