“In optics, there was a problem,” says Amit Agrawal, a physicist at the National Institute of Standards and Technology in Gaithersburg, Md. If you wanted to focus a single lens to two different points ...

Please provide your email address to receive an email when new articles are posted on . A diffractive extended depth of focus IOL helped improve visual acuity at 3 months after bilateral implantation, ...

TTArtisan has now revived the spirit of the iconic Canon 17mm TS-E f/4L with the release of the TTArtisan TS 17mm f/4 ASPH, a ...

Please provide your email address to receive an email when new articles are posted on . Last month, we started a conversation about extended focus IOLs and what makes a patient a good or bad candidate ...

In an image, estimating the distance between objects and the camera by using the blur in the images as clue, also known as depth from focus/defocus, is essential in computer vision. However, ...

In photography, depth of field refers to how much of a three-dimensional space the camera can focus on at once. A shallow depth of field, for example, would keep the subject sharp but blur out much of ...

Researchers have developed a new method for flexibly creating various needle-shaped laser beams. These long, narrow beams can be used to improve optical coherence tomography (OCT), a noninvasive and ...

Patients who have a new type of lens implanted in their eyes during surgery for cataracts or to correct their eyesight have excellent or good vision over distances both near and far, and often no ...