Shopping? Check out our latest product comparisons

Vision

Scientists have created a contact lens that can can project an image onto the wearer's ret...

Fans of the original film in the Terminator franchise will recall how various bits of data were shown to be overlaid on the cyborg's vision - in particular, they might remember the list of possible responses that could be used when someone was angrily knocking on its door (for those who don't remember, its chosen response wasn't very polite). Such augmented vision systems are now a little closer to reality, thanks to work being done by a team of scientists at the University of Washington and Aalto University, in Finland. They have created a contact lens that displays information, which is visible to the wearer.  Read More

A 'heat mean signature' of a human hand is used to perceive the six segments of the overal...

When we see a hand, regardless of whether it's open, in a fist, or pointing a finger, we still recognize it as a hand. If a computer has only been taught to recognize an open hand, however, it will probably have no idea what a fisted hand is. Getting computer vision systems to interpret images more like people do - to realize that a fist is a hand, for instance - has been one of the aims of artificial intelligence researchers for some time now. Things in that field may be about to take a step forward, however, as scientists from Indiana's Purdue University have just announced two new methods of three-dimensional object recognition, both based around heat diffusion.  Read More

On the left is an Ishihara test plate - if you're not color blind you should be able to se...

Best known for discovering security flaws in online systems, Dan Kaminsky has recently announced the development and release of a smartphone app to help with color blindness. DanKam takes the colors that cause viewing problems and applies filters to make them visible. The system is currently optimized for the most common form of color vision deficiency, although users are encouraged to customize and tweak the augmented reality app to try and find settings that work best for them.  Read More

A human retina, which was the focus of the study

A better understanding of color vision has been gained in a feat of interdisciplinary and inter-institutional science. Researchers from neuroscience, nanoengineering, physics and electronics departments at universities on opposite sides of the world have come together to build a sensor that detects activity in the neural circuitry of the eye with a level of accuracy never before seen.  Read More

TruFocals can be instantly focused by the user, thanks to flexible lenses

If you wear bifocal or even trifocal eyeglasses, then you will know what a hassle it can be having to tilt your head up to see things that are nearby. The areas of image softness or distortion can also be distracting, and even cause nausea or headaches in some users. Using multiple pairs of single-vision glasses gets you around these problems, but introduces the problem of... well, of carrying around and using multiple pairs of glasses. TruFocals, however, allow users to wear one pair of glasses for near-, far- and mid-vision, without having different focal areas within the same lens at the same time. Instead, users actually focus the glasses by hand, not unlike a pair of binoculars.  Read More

NeuFlow takes its inspiration from the mammalian visual system, mimicking its neural netwo...

The brain’s ability to quickly visually interpret our environment requires such an enormous number of computations it is pretty amazing that it accomplishes this feat so quickly and with seemingly little effort. Coming up with a computer-driven system that can mimic the human brain in visually recognizing objects, however, has proven difficult, but now Euginio Culurciello of Yale’s School of Engineering & Applied Sciences has developed a supercomputer based on the human visual system that operates more quickly and efficiently than ever before.  Read More

Optician and optometrist Jaume Paune is the creator of contact lenses capable of correctin...

If you suffer from hyperopia, more commonly known as farsightedness or longsightedness, you may be interested to know that the world's first contact lens to correct the condition has been developed. The correction, however, is temporary – a custom-made lens is worn overnight to reshape the cornea, and when the patient wakes up and removes the lens they have perfect vision for the day.  Read More

Dr. May Griffith displays a biosynthetic cornea that can be implanted into the eye to repa...

A study made public this Wednesday has shown that biosynthetic corneas can and do restore eyesight in humans. Researchers from the Ottawa Hospital Research Institute (OHRI) and the University of Ottawa in Canada, along with Linköping University in Sweden, conducted a clinical trial using ten Swedish patients with advanced keratoconus or central corneal scarring. Each patient had the damaged corneal tissue in one eye surgically replaced with a biosynthetic cornea made from synthetically cross-linked recombinant human collagen. After two years, six of the patients’ vision had improved. After being fitted with contact lenses, their vision was comparable to that of someone who had received a real human cornea transplant.  Read More

The sunburst diving beetle can teach us a thing or two about bifocal imaging

We all know that we shouldn’t make fun of people with glasses, but now it appears that bugs with bifocals deserve our respect too. Researchers from the University of Cincinnati (UC) have discovered that the larvae of the sunburst diving beetle (Thermonectus marmoratus) have bifocal eyes. As far as they are aware, this is the first known example of truly bifocal lenses in the animal kingdom. Previously, only prehistoric trilobites were suspected of having had bifocal vision. Besides being a big hairy deal in the bug world, this news could also have implications for human technology.  Read More

Scientists hope to emulate the honeybee's aerial navigational skills through human technol...

Day after day, honeybees are able to travel back and forth between a food source and their hive, even in a constantly-changing environment. Given that the insects have relatively small brains, scientists have determined that they rely chiefly on vision and hard-wired visual processing abilities to achieve such a feat. To better understand that process, scientists from the Cognitive Interaction Technology Center of Excellence at Bielefeld University, Germany, have created an artificial honeybee’s eye. Using the device, they hope to unlock the secrets of the insects’ sensing, processing and navigational skills, and apply them to human technology such as micro air vehicles (MAVs).  Read More

Looking for something? Search our 28,277 articles