Nitecore NU31: A durable headlamp that's built to last in all environments and weather. There's a slight green tint in the white light, but this wouldn't bother most users.

The Storm 400 is IP67 rated — completely protected from dirt and dust ingress and is waterproof to a depth of one meter (in 30-minute test conditions). It's ideal if you're a part-time hiker, caver, climber or such. The three dimmable LEDs add versatility. The green light can make reading more straightforward, this might be helpful if you have to read an instruction manual or a map to get to your location. In this technique, the first pupil is dilated, and the slip lamp beam and the microscope are kept co-axial. This technique helps in assessing the media clarity and opacities. The principal is that when the light passes through the pupil and strikes the fundus, it creates a glow posterior to the opacity in the media. Hence, the media opacity creates a shadow. Under high magnification (10to 16X), the microscope is focused on delineating the pathology. This technique is also helpful in assessing the cornea, lenticular or vitreous pathology. An important application is to grade cataracts, especially the cortical and posterior subcapsular ones, using the LOCS 2 and 3 classification (lens opacity classification system). [3]

StatPearls [Internet].

BioLite Headlamp 330: An affordable lightweight headlamp from an admirable company that's easy to operate and comfortable to wear.

The Koeller illumination system has been incorporated into the slit lamps. Optically it is similar to a 35 mm slide projection except for the variable aperture slit, and the lens has a much shorter focal length. The filament light source and the condenser lens, or the projection lens, form the image of the slit in the patient's eye. [3] The pathologies can be divided based on the optical properties as obstructive, dispersive, or refractile. [3] The Olight Perun 2 is a true multi-tasker and is likely to appeal to people who want to use it for camping, late-night dog walking, fishing or carrying lots of kit around in the dark. But for those looking for a lightweight headlamp with a red light function, this may not be the one for you.

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A light reflection occurs when a light beam strikes an optical surface, called a zone of discontinuity. These zones can be observed in the cornea as well as the lens. When an observer is kept in the pathway of reflective light, a glittering reflex will be seen, called specular reflection. The reflected surface is called the zone of specular reflection. The reflective strip on the headband will make you more visible to others and will also make it easier to find in the dark. The front bezel of the headlamp articulates to adjust the light to your desired angle. A slit beam is used progressively to focus on the deeper layers of the lens. This optical section can also delineate the anterior one-third of the vitreous face.

It does have an unusually robust design for a headlamp. Its IPX8 waterproof rating means that it's safe for continuous immersion in water and the anodized aluminum housing makes it incredibly strong. During our review, it even got dropped from one meter on hard ground with no adverse effects whatsoever. With decades of design evolution behind it, home lighting is no longer just practical. Crystalline shaping by designers like Gabriel Scott turns every lighting apparatus into a luxury accessory. A new installation doesn’t merely showcase a space; carefully chosen ceiling lights, table lamps and floor lamps can create a mood, spotlight a favorite piece or highlight your unique personality.Today, lighting designers like the self-taught Bec Brittain have used the flexible structure of LEDs to craft glamorous solutions by working with what is typically considered a harsh lighting source. By integrating glass and mirrors, reflection can be used to soften the glow from LEDs and warmly welcome light into any space. Just as gazing at the stars allows you to glimpse the universe’s past, vintage chandeliers like those designed by Gino Sarfatti and J. & L. Lobmeyr, for example, put on a similarly stunning show, each with a rich story to tell. As dazzling as it is, the Arco lamp, on the other hand, prioritizes functionality — it’s wholly mobile, no drilling required. Designed in 1962 by architect-product designers Achille & Pier Giacomo Castiglioni, the piece takes the traditional form of a streetlamp and creates an elegant, arching floor fixture for at-home use. There is no shortage of modernist lighting similarly prized by collectors and casual enthusiasts alike — the Tripod floor lamp by T.H. Robsjohn-Gibbings, Greta Magnusson-Grossman's sleek and minimalist Grasshopper lamps and, of course, the wealth of postwar experimental lighting that emerged from Italian artisans at Arredoluce, FLOS and many more are hallmarks in illumination innovation.

The Nitecore NU31 is a traditional-looking, affordable headlamp with enough features to satisfy most stargazers. We found a lot to like about the design in our Nitecore NU31 review, right down to the reflective band that will help your campmates to spot you in the dark. This headlamp is particularly noteworthy for its robust aluminum casing whereas many other models are plastic. This adds to its durability, making it resistant to impacts up to a meter. It also has the added bonus of helping to dissipate heat. Although the Nitecore comes with IP66 waterproofing, which is sufficient for most weather conditions, it won't stand up to being fully submerged in water like some of the other models on this list.The BioLite HeadLamp 330 is the most comfortable headlamp we've tested. It has a 'no-bounce' design to help runners, with a reflective strip on the rear for added safety. What is the brightest headlamp?