Objective Lenses: Types, Parts, Magnification, Uses, Care - objective lens microscope definition

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A magnifying glass is a convex piece of glass that bends the light in a way to make things you hold near it look larger.

In the past, anti-reflective coatings were either painted onto the lens or applied to the lens like a sticker. But that's not the case anymore. Today, anti-reflective coatings are fused onto the lens matrix, a technology first employed with high-powered telescopes and microscopes.

Vitale S, Ellwein L, Cotch MF, Ferris FL 3rd, Sperduto R. Prevalence of refractive error in the United States, 1999-2004. Arch Ophthalmol. 2008;126(8):1111-1119. doi:10.1001/archopht.126.8.1111

This article discusses how anti-reflective coating works, the pros and cons of anti-glare glasses, and how much it costs.

Heidemeyer, Kristine, S. Morteza Seyed Jafari, Maurice A. Adatto, Laurence Feldmeyer, Nikhil Yawalkar, and Simon Bossart. 2023. "Quality-Switched Nd:YAG 1064 nm Laser for Management of Hyperpigmentation and Atrophic Scars after Long-Pulsed Nd:YAG Laser for Treatment of Leg Telangiectasias—A Case Report" Cosmetics 10, no. 6: 147. https://doi.org/10.3390/cosmetics10060147

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Heidemeyer, K.; Seyed Jafari, S.M.; Adatto, M.A.; Feldmeyer, L.; Yawalkar, N.; Bossart, S. Quality-Switched Nd:YAG 1064 nm Laser for Management of Hyperpigmentation and Atrophic Scars after Long-Pulsed Nd:YAG Laser for Treatment of Leg Telangiectasias—A Case Report. Cosmetics 2023, 10, 147. https://doi.org/10.3390/cosmetics10060147

According to Vision Center, AR coating can add $20 to $150 to the cost of lenses. Insurance may cover some or all of that cost.

It's worth asking your optician about other available AR coatings. Manufacturers are constantly updating their materials and may offer superior products specifically designed for night driving, sports, or computer use.

Editor’s Choice articles are based on recommendations by the scientific editors of MDPI journals from around the world. Editors select a small number of articles recently published in the journal that they believe will be particularly interesting to readers, or important in the respective research area. The aim is to provide a snapshot of some of the most exciting work published in the various research areas of the journal.

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Heidemeyer K, Seyed Jafari SM, Adatto MA, Feldmeyer L, Yawalkar N, Bossart S. Quality-Switched Nd:YAG 1064 nm Laser for Management of Hyperpigmentation and Atrophic Scars after Long-Pulsed Nd:YAG Laser for Treatment of Leg Telangiectasias—A Case Report. Cosmetics. 2023; 10(6):147. https://doi.org/10.3390/cosmetics10060147

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Feb 27, 2019 — By eliminating reflections, AR coating also makes your eyeglass lenses look nearly invisible so people can see your eyes and facial expressions ...

Vision problems caused by prolonged computer use are common. A 2020 study published in the journal Cureus reported that computer vision syndrome—a condition characterized by headache, itchy eyes, and temporary vision changes—was higher in eyeglass wearers and those who reported glare on their computer screens.

Anti-reflective coating on eyeglasses costs more, but it may be beneficial in specific situations, such as night driving and preventing eye strain from computer use. On the other hand, the lenses are easily scratched and may require replacement.

Yellow-tint glasses often touted to improve night driving vision, haven't been shown to be all that effective in clinical studies. Anti-reflective coating, on the other hand, does reduce glare and can improve nighttime driving performance.

The coating is made up of carefully calibrated layers of metal oxides that are applied to the front and back of the lens and then irradiated with high-intensity ultraviolet (UV) light to enhance their light absorbency. This reduces reflected light and allows more non-reflected light to be transmitted through the lens.

The American Optometric Association lists eyeglass lens coatings as one of the more useful solutions for computer vision syndrome.

Heidemeyer, K., Seyed Jafari, S. M., Adatto, M. A., Feldmeyer, L., Yawalkar, N., & Bossart, S. (2023). Quality-Switched Nd:YAG 1064 nm Laser for Management of Hyperpigmentation and Atrophic Scars after Long-Pulsed Nd:YAG Laser for Treatment of Leg Telangiectasias—A Case Report. Cosmetics, 10(6), 147. https://doi.org/10.3390/cosmetics10060147

Abstract: The correction of leg telangiectasias is one of the most frequently performed interventions in the Western world. While sclerotherapy remains the gold standard of treatment, several studies have shown comparable efficacy and, in some situations, an even more favorable use of lasers as an alternative treatment option. The most frequent side effect of both treatment options is hyperpigmentation, which usually clears spontaneously in most cases but can be challenging to treat if it persists. The origin of this hyperpigmentation is not fully understood; small studies point to hemosiderin as the causative pigment, at least in post-sclerotherapy hyperpigmentation. More rare side effects of the treatment include ulcerations and scarring. Quality-switched (QS) Nd:YAG lasers have demonstrated good efficacy in treating hemosiderin depositions in the skin, post-inflammatory hyperpigmentation and atrophic scars. We present a case of post-inflammatory hyperpigmentation and scarring after laser treatment of leg telangiectasia with a long-pulsed Nd:YAG laser that was successfully treated using a QS Nd:YAG 1064 nm laser. This case suggests the QS Nd:YAG laser as a possible treatment option in cases of hyperpigmentation with various origins, including hemosiderin and melanin, and scarring after laser treatment of leg telangiectasias. Keywords: post-sclerotherapy hyperpigmentation; telangiectasias; veins; QS laser; 1064 nm; hemosiderin; pigment laser

Hwang AD, Tuccar-Burak M, Peli E. Comparison of Pedestrian Detection With and Without Yellow-Lens Glasses During Simulated Night Driving With and Without Headlight Glare. JAMA Ophthalmol. 2019;137(10):1147–1153. doi:10.1001/jamaophthalmol.2019.2893

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Anti-reflective coating (also known as AR, no-glare, or glare-free coating) reduces glare by absorbing and redirecting reflected light. This allows more non-reflected light to pass through, leading to fewer visual disturbances. Unlike reflective lenses with mirror-like finishes, anti-reflective coatings are transparent with a very faint green or blue tint.

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Even so, a higher-end coating can be well worth your money. In addition to the benefits, these lenses tend to have better warranties and may be replaced at no charge if your lenses are scratched within a year.

Altalhi A, Khayyat W, Khojah O, Alsalmi M, Almarzouki H. Computer Vision Syndrome Among Health Sciences Students in Saudi Arabia: Prevalence and Risk Factors. Cureus. 2020 Feb 20;12(2):e7060. doi:10.7759/cureus.7060.

Anti reflective glasses

Feature papers are submitted upon individual invitation or recommendation by the scientific editors and must receive positive feedback from the reviewers.

By Troy Bedinghaus, OD Troy L. Bedinghaus, OD, board-certified optometric physician, owns Lakewood Family Eye Care in Florida. He is an active member of the American Optometric Association.

Hedaya MK, Elbahri M. Antireflective coatings: conventional stacking layers and ultrathin plasmonic metasurfaces: mini-review. Materials (Basel). 2016 Jun;9(6):497. doi:10.3390/ma9060497

If you are considering anti-reflective coating, check the grading scale offered by your optician. Some opticians offer a choice of "good," "better," and "best" (or a similar scale) with the "best" grade costing considerably more.

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Anti-glare glasses also may help people who are sensitive to light while driving in the daytime or those boating in bright daylight. AR coatings are available for sunglasses too.

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Glare while driving at night is a common cause of accidents, especially for people with astigmatism. This eye disorder, which affects one in three Americans, can cause visual disturbances like halos and "whiteouts" with approaching headlights.

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Jun 27, 2023 — The Standard lens option includes DuraClear™, a premium anti-reflective treatment that lets in 99% of available light and improves clarity and ...

While it's not an outright necessity, anti-reflective coating is something you may want to consider if you have symptoms of eye strain or spend a lot of time in front of a computer.

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Anti-reflective coating on eyeglasses is designed to reduce glare, making nighttime driving easier, and reducing eye strain from computer use. The coating is fused into the surface of the lens, giving it a very faint blue or green tinge. Despite their benefits, anti-glare glasses tend to scratch easily and would then need to be replaced.

Feature papers represent the most advanced research with significant potential for high impact in the field. A Feature Paper should be a substantial original Article that involves several techniques or approaches, provides an outlook for future research directions and describes possible research applications.