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Home3D PrintingScientists develop 3D printed glasses with the potential to treatment shade blindness

Scientists develop 3D printed glasses with the potential to treatment shade blindness


Researchers at Khalifa College have give you a set of 3D printed glasses that might be able to curing Shade Imaginative and prescient Deficiency (CVD) issues. 

Composed of tinted lenses housed in MSLA 3D printed frames, the staff’s eyewear successfully works by blocking out undesired wavelengths whereas staying clear to the remainder of the seen gentle spectrum. 

Already, CVD-affected volunteers sporting the glasses have reported important enhancements in shade identification, main the scientists to conclude that their glasses “have nice potential in combating shade blindness.”

The Khalifa team's 3D printed glasses. Image via Khalifa University.
The Khalifa staff’s 3D printed glasses. Picture by way of Khalifa College.

Growing a shade blindness treatment 

CVD (often known as shade blindness), is a typical congenital dysfunction that limits the power of sufferers to differentiate between shades of sure colours. In accordance with the charity Color Blind Consciousness, as many as 1 in 12 of males (8%) and 1 in 200 girls undergo from CVD. The dysfunction, which makes each day duties like figuring out the colour of site visitors lights or recent meals very troublesome, is brought on by faulty photoreceptor ‘cone’ cells within the retinas of affected sufferers’ eyes. 

In wholesome eyes, blue, crimson, and inexperienced cone cells operate collectively to permit for the detection of main colours. Shade blindness is triggered when one in all these cell varieties is defective or lacking. Whereas gene therapies are at present underneath growth, these stay on the lab testing stage, that means that sufferers are left needing glasses or contacts to change their shade notion. 

Companies like Enchroma have provided such eyewear since 2012, and it says its glasses are highly-effective, nevertheless it stays troublesome to customise these for sufferers. With this in thoughts, the Khalifa researchers have turned to 3D printing to develop frames of their very own, which may be tailor-made to customers’ color-correcting wants. 

An efficiency comparison between the Atto-dyed 3D-printed glasses and some of the commercially available colorblind glasses on the market. Image via Khalifa University.
An effectivity comparability between the Atto-dyed 3D printed glasses and a number of the commercially obtainable glasses available on the market. Picture by way of Khalifa College.

Placing shade correction to the take a look at

As soon as the scientists had designed a prototype pair of glasses on SOLIDWORKS, they printed them from ASIGA DentaClear and Grey resin on a Prusa SL1S system. Within the course of, the staff discovered that curing time and layer thickness have been very important to reaching optimized optical and mechanical properties, with a six-second per layer print time and 25-micron thickness proving best. 

To create the glasses’ lenses, the researchers mixed their resin with Atto 565 and Atto 488 wavelength-filtering dyes, which gave them the specified tinting impact. When fitted to frames and prepared for testing, these lenses proved able to working as desired throughout characterization, in that they blocked undesired wavelengths for CVD sufferers between 480–510nm and 550–580 nm. 

In comparison with off-the-shelf Enchroma glasses, the 3D printed glasses have been additionally discovered to filter out gentle at related wavelengths whereas exhibiting “higher selectivity” within the gentle they transmitted. In follow, this meant the 3D printed eyewear was able to blocking out greater than 50% of undesired wavelengths however sustaining transparency of over 85% to different gentle on the seen spectrum.

With volunteers later utilizing the glasses to attain 45% and 200% enhancements in shade identification throughout the usual Ishihara shade blindness take a look at, the staff says their 3D printed frames signify a viable different remedy for CVD sufferers that’s extra customizable and efficient than industrial eyewear. 

“Outcomes indicated that our 3D printed glasses have been extra selective in filtering undesired wavelengths than commercially obtainable CVD glasses,” concluded the staff of their paper. “[Our] Findings present that these 3D printed tinted glasses have nice potential in combating shade blindness, owing to their ease of fabrication and customization, which may be tailor-made to the affected person’s want.”

The researchers' 3D printed IR goggles and haptic sleeve system.
A 3D printed IR goggles and haptic sleeve system developed at TUM. Picture by way of Manuel Zahn and Armaghan Ahmad Khan.

Apparently, the Khalifa staff’s 3D printed glasses aren’t the primary to be developed utilizing the know-how to deal with imaginative and prescient issues. Earlier this 12 months, researchers on the Technical College of Munich (TUM) developed 3D printed haptic suggestions glasses that permit individuals with visible impairments to navigate and not using a cane. 

Elsewhere, additive manufacturing continues to make inroads into the traditional eyewear market. Optiswiss put in Luxexcel’s VisionPlatform 7 platform late final 12 months, designed to permit it to higher handle glasses producers with 3D printed lenses. Taking a look at YOU MAWO 3D printed frames, the EOS buyer present in a 2021 life cycle evaluation that utilizing 3D printing diminished their carbon footprint by as a lot as 58%. 

The researchers’ findings are detailed of their paper titled “Improvement of 3D-Printed Glasses for Shade Imaginative and prescient Deficiency,” co-authored by Fahad Alam, Ahmed E. Salih, Mohamed Elsherif and Haider Butt. 

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Featured picture exhibits Khalifa staff’s 3D printed glasses. Picture by way of Khalifa College.



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