contact lens

Contact lenses at work

In certain workplaces, wearing contact lenses can complicate eye safety, according to the Canadian Centre for Occupational Health and Safety.




contact lens

Allergy Drug Delivery Contact Lens Approved by Japan Regulatory Authority

New Lens Aims to Treat Contact Lens Wearers Who Suffer from Seasonal Allergies




contact lens

Glint Pharmaceuticals Receives FDA IND Acceptance for Clinical Study for Phase 1/2 Clinical Trial of Antibiotic Drug-Releasing Contact Lens, ACL5

Investigation to initiate in Q2 2023




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Google Contact Lens?



Google Glass
I'm sure you have all heard about Google Glass, but if not, Google Glass is a wearable computer with an optical head-mounted display (OHMD).

Google's intention is to produce a mass-market ubiquitous computer (advanced computing concept where computing is made to appear everywhere and anywhere) that displays information in a smartphone-like hands-free format and wearers communicate with the Internet via voice commands.
The new Google lens?

But if you think Google Glass is cool, wait until you read about Google's newest patent application. Google has devised a way to shrink Google Glass into a single contact lens. The user will control its application with a series of unique blinking patterns. The Yahoo article mentions that the new lens could have significant application for the blind which is incredible, but as with most technology, applications will be discovered after production.

I also think that both of these products could be beneficial to career and technical education and to business and industry. For example, an automotive technician could search for help while repairing a vehicle, take notes, or take a picture and/or video and send it to ask for assistance. What are your thoughts on applications for CTE?




contact lens

A surface-engineered contact lens for tear fluid biomolecule sensing

Lab Chip, 2024, 24,2327-2334
DOI: 10.1039/D4LC00176A, Paper
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Aravind M, Sajan D. George
Adhesive contrast contact lens fabricated by selective lubricant grafting splits tear film on specified zone by secretion and blinking. Integrating the contact lens with the spectroscopic technique offers an efficient platform for biomolecule sensing.
The content of this RSS Feed (c) The Royal Society of Chemistry




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COVID-19: Is It Safe To Wear Contact Lenses During The Pandemic?

As of today, the total number of confirmed COVID-19 cases in India is 59662, with 17847 recovered cases and 1981 deaths. The concerns related to COVID-19 pandemic is increasing day by day. The WHO and CDC along with many healthcare institutions




contact lens

COVID-19: Is It Safe To Wear Contact Lenses During The Pandemic?

As of today, the total number of confirmed COVID-19 cases in India is 59662, with 17847 recovered cases and 1981 deaths. The concerns related to COVID-19 pandemic is increasing day by day. The WHO and CDC along with many healthcare institutions




contact lens

Key companies operating in the contact lens market are Alcon, Menicon Group, The Cooper Companies, Inc., Carl Zeiss AG, Bausch and Lomb, Air Optix, Essilor, Conforma, Menicon, UltraVision.

Global Industry Insights, and Forecast to 2025




contact lens

Fresh Lens of Vancouver, B.C. Has Just Released its New Contact Lens Referral Program. The Program Gives Referred Friends 15 Percent Off Their Premium Contact Lenses

We already supply leading brands such as Acuvue Oasys 12 Package and 24 Packs at up to 70% off. Now you and your friends can receive an additional 15% off your contact lens purchases.




contact lens

New Contact Lenses May Soon Allow Diabetics to Monitor Glucose Levels With Just the Blinks of Their Eyes

Not only can the smart contact lenses monitor glucose levels, they can also release medication directly into the membrane of the eye.

The post New Contact Lenses May Soon Allow Diabetics to Monitor Glucose Levels With Just the Blinks of Their Eyes appeared first on Good News Network.




contact lens

Polymer material, ophthalmic lens and contact lens

Provided is a polymer material having superior water wettability and lubricity, and enabling persistence of the same by allowing the surfactant to be retained by the polymer material so as not to be gradually released. The present invention is directed to a polymer material including: [I] a polymer having a constitutional unit derived from (A) a polymerizable compound having an acryloyloxy group and not having a silicon atom; and [II] a surfactant. The content of the surfactant [II] is preferably 0.05% by mass or greater and 1% by mass or less. The surfactant [II] is preferably a nonionic surfactant having a polyoxyethylene group.




contact lens

Multistep UV process to create surface modified contact lenses

Medical devices having a wettable, biocompatible surface are described herein. Processes for producing such devices are also described.




contact lens

Gripper for a contact lens and process for transporting a contact lens

A gripper (1) for a contact lens (CL) includes a gripper head (10) having a bearing surface (11), the bearing surface (11) having at least one opening (110) through which underpressure can be applied in order to suck the contact lens (CL) against the bearing surface (11) and through which overpressure can be applied in order to release the contact lens (CL) from the bearing surface (11). The gripper further includes a detection opening (111) in the bearing surface (11) through which a separate underpressure can be applied.




contact lens

Contact Lense Issues

I stopped wearing contacts for a few months and now they make my eyes red and unhappy even if I only wear them for a few hours. What have I done wrong?

I've worn contacts every day for years and years, but I recently stopped bothering on account of being at home all the time anyway. The last two times I tried wearing them, everything felt fine until I took them out and then I had red, irritated eyes and some discharge the next morning. This last time I only left them in for a couple of hours to see if it helped but I've had the same problem. Does anyone know how I can fix this? Thanks!




contact lens

DAC 2015: Google Smart Contact Lens Project Stretches Limits of IC Design

There has been so much hype about the “Internet of Things” (IoT) that it is refreshing to hear about a cutting-edge development project that can bring concrete benefits to millions of people. That project is the ongoing development of the Google Smart Contact Lens, and it was detailed in a keynote speech June 8 at the Design Automation Conference (DAC 2015).

The keynote speech was given by Brian Otis (right), a director at Google and a research associate professor at the University of Washington. The “smart lens” that the project envisions is essentially a disposable contact lens that fits on an eye and continuously monitors blood glucose levels. This is valuable information for anyone who has, or may someday have, diabetes.

Since he was speaking to an engineering audience, Otis focused on the challenges behind building such a device, and described some of the strategies taken by Google and its partner, Novartis. The project required new approaches to miniaturization, low-power design, and connectivity, as well as a comfortable and reliable silicon-to-human interface. Otis discussed the “why” as well and showed how the device could potentially save or improve millions of lives.

Millions of Users

First, a bit of background. Google announced the smart lens project in a blog post in January 2014. Since then it has been featured in news outlets including Forbes, Time, and the Wall Street Journal. In March 2015, Time reported that Google has been granted a patent for a smart contact lens.

The smart lens monitors the level of blood glucose by looking at its concentration in tears. The lens includes a wireless system on chip (SoC) and a miniaturized glucose sensor. A tiny pinhole in the lens allows tear fluid to seep into the sensor, and a wireless antenna handles communications to the wireless devices.

“We figure that if we can solve a huge problem, it is probably worth doing,” Otis said. “Diabetes is one example.” He noted 382 million people worldwide have diabetes today, and that 35% of the U.S. population may be pre-diabetic. Today, diabetics must *** their fingers to test blood glucose levels, a procedure that is invasive, painful, and subject to infrequent monitoring.

According to Otis, the smart contact lens represents a “new category of wearable devices that are comfortable, inexpensive, and empowering.” The lens does sensor data logging and uses a portable instrument to measure glucose levels. It is thin, cheap, and disposable, he said.

Moreover, the lens is not just for people already diagnosed with diabetes—it’s for anyone who is pre-diabetic, or may be at risk due to genetic predisposition. “If we are pro-active rather than re-active,” Otis said, “Instead of waiting until a person has full-fledged diabetes, we could make a huge difference in peoples’ lives and lower the costs of treating them.”

Technical Challenges

No one has built anything quite like the smart lens, so researchers at Google and Novartis are treading new ground. Otis identified three key challenges:

  • Miniaturization: Everything must be really small—the SoC, the passive components, the power supply. Components must be flexible and cheap, and support thin-film integration.
  • Platform: Google has developed a reusable platform that includes tiny, always-on wireless sensors, ultra low-power components, and standards-based interfaces.
  • Data: Researchers are looking for the best ways to get the resulting data into a mobile device and onto the cloud.

Comfort is another concern. “This is not intended to be for the most severe cases,” Otis said. “This is intended to be for all of us as a pro-active way of improving our lifestyles.”

The platform provides a bidirectional encrypted wireless link, integrated power management, on-chip memory, standards-based RFID link, flexible sensor interface, high-resolution potentiostat sensor, and decoupling capacitors. Most of these capabilities are provided by the standard CMOS SoC, which is a couple hundred microns on a side and only “tens of microns” thick.

Otis noted that unpackaged ICs are typically 250 microns thick when they come back from the foundry. Thus, post-processing is needed so the IC will fit into a contact lens.

Furthermore, the design requires precision analog circuitry and additional environmental sensors. “Some of this stuff sounds mundane but it is really hard, especially when you find out you can’t throw large decoupling capacitors and bypass capacitors onto a board, and all that has to be re-integrated into the chip,” Otis said.

Sensor Challenges

Getting information from the human body is challenging. The smart lens sensor does a direct chemical measurement on the surface of the eye. The sensor is designed to work with very low glucose concentrations. This is because the concentration of glucose in tears is an order of magnitude lower than it is in blood.

In brief, the sensor has two parallel plates that are coated with an enzyme that converts glucose into hydrogen peroxide, which flows around the electrodes of the sensor. This is actually a fairly standard way of doing glucose monitoring. However, the smart lens sensor has two electrodes compared to the typical three.

In manufacturing, it is essential to keep costs low. Otis outlined a three-step manufacturing process:

  • Start with the bottom layer, and mold a contact lens in the way you typically would.
  • Add the electronics package on top of that layer.
  • Build a second layer that encapsulates the electronics and provides the curvature needed for comfort and vision correction.

Beyond the technical challenges are the “clinical” challenges of working with human beings. The human body “is messy and very variable,” Otis said. This variability affects sensor performance and calibration, RF/electro-magnetic performance, system reliability, and comfort.

The final step is making use of the data. “We need to get the data from the device into a phone, and then display it so users can visualize the data,” Otis said. This provides “actionable feedback” to the person who needs it. Eventually, the data will need to be stored in the cloud.

As he concluded his talk, Otis noted that the platform his group developed may have many applications beyond glucose monitoring. “There is a lot you can do with a bunch of logic and sensing capability,” he said, “and there are hundreds of biomarkers beyond glucose.” Clearly this will be an interesting technology to watch.

Richard Goering

Related Blog Post

Gary Smith at DAC 2015: How EDA Can Expand Into New Directions




contact lens

Could Your Contact Lenses Track, Treat Your Diabetes?

Title: Could Your Contact Lenses Track, Treat Your Diabetes?
Category: Health News
Created: 4/24/2020 12:00:00 AM
Last Editorial Review: 4/27/2020 12:00:00 AM





contact lens

Prototype contact lenses allow colourblind people to tell green from red

Researchers from Tel Aviv University in Israel say their contact lenses can restore lost colour contrast and improve colour perception by a factor of ten.




contact lens

COVID-19: Is It Safe To Wear Contact Lenses During The Pandemic?

As of today, the total number of confirmed COVID-19 cases in India is 59662, with 17847 recovered cases and 1981 deaths. The concerns related to COVID-19 pandemic is increasing day by day. The WHO and CDC along with many healthcare institutions




contact lens

COVID-19: Is It Safe To Wear Contact Lenses During The Pandemic?

As of today, the total number of confirmed COVID-19 cases in India is 59662, with 17847 recovered cases and 1981 deaths. The concerns related to COVID-19 pandemic is increasing day by day. The WHO and CDC along with many healthcare institutions




contact lens

Structurally coloured contact lens sensor for point-of-care ophthalmic health monitoring

J. Mater. Chem. B, 2020, 8,3519-3526
DOI: 10.1039/C9TB02389E, Paper
Yunlong Wang, Qilong Zhao, Xuemin Du
A structurally coloured contact lens sensor has been developed for point-of-care diagnosis of eye diseases.
The content of this RSS Feed (c) The Royal Society of Chemistry




contact lens

Contact lens-based lysozyme detection in tear using a mobile sensor

Lab Chip, 2020, 20,1493-1502
DOI: 10.1039/C9LC01039D, Paper
Zachary Ballard, Sarah Bazargan, Diane Jung, Shyama Sathianathan, Ashley Clemens, Daniel Shir, Saba Al-Hashimi, Aydogan Ozcan
A rapid and cost-effective method for monitoring proteins in tear-fluid is reported, which enables biomarker monitoring using contact lenses toward personalized mobile-health applications.
The content of this RSS Feed (c) The Royal Society of Chemistry




contact lens

Photonic crystal-based smart contact lens for continuous intraocular pressure monitoring

Lab Chip, 2020, Advance Article
DOI: 10.1039/C9LC01268K, Paper
Bohee Maeng, Hyung-kwan Chang, Jungyul Park
A powerless smart contact lens enabling to monitor intraocular pressure (IOP) by checking the visual color change in photonic crystal structure with a microhydraulic amplification system has been realized.
To cite this article before page numbers are assigned, use the DOI form of citation above.
The content of this RSS Feed (c) The Royal Society of Chemistry