Light is important for eye development in the womb of the mother

Fetus shown in the eye

Researchers have found that light plays an important role in the normal eye development in fetus during pregnancy.

This research has been published online in the journal Nature.

This research has been done on the mouse model and is interesting as it tells that the eye not only depends on light to see but also requires light to develop normally even before birth.

“This fundamentally changes our understanding of how the retina develops,” study co-author Richard Lang, PhD, a researcher in the Division of Pediatric Ophthalmology at Cincinnati Children’s Hospital Medical Center, said in a statement. “We have identified a light-response pathway that controls the number of retinal neurons. This has downstream effects on developing vasculature in the eye and is important because several major eye diseases are vascular diseases.” Read More …

Play “EyeWire” game to help researchers in new discoveries about neural connections in the eye

A team of researchers from MIT and Max Planck has launched EyeWire on December 10th that is an online game not only allowing the users to check for the neural connections in the retina of the eye but also help the researchers the complete the mapping of the retinal functions in the visual perception and making new discoveries.

Through this project, researchers will be able to map the projections of the retinal cells called as JAM-B cells, which are the first retinal ganglion cells renowned on the basis of molecular marker — a protein called ‘Junctional Adhesion Molecule B’ (JAM-B). These cells react particularly to the upward motion that appears downward due to the inverted images.

 J cells are among the first types of retinal neurons to be genetically controlled

Read More …

Text messages from mobile and images directly on the contact lens in the eye

Contact lens display technology (Credit: IMEC)

Researchers from Ghent University’s centre of microsystems technology in Belgium have developed a technology that will show the text messages from a mobile phone and other such information directly on the contact lens worn in the human eye.

Researchers have made a spherical curved LCD display that can be integrated into the contact lenses and show images by means of wireless technology.

“Now that we have established the basic technology, we can start working towards real applications, possibly available in only a few years,” Prof. Herbert De Smet, who is supervising CMST’s display group, said in a statement. Read More …

Can human eye sense magnetic field?


According to a study published in the journal of Nature Communications, human retina has sensors of magnets.

Sensing Earth’s magnetic field is clear in migratory birds and some animals. It was believed, previously, that human beings have no sense to magnetic fields but in a recent study, published in Nature Communications, it has been found that human cryptochrome (CRY2) exhibits light dependent magnetosensitivity. Cryptochrome is a type of protein which can sense blue light. CRY2 is present in human eye in large amount. Read More …

Differences between the brain of man and woman

Every professional scientist and researcher have concluded that the brain of men and women are different.

It has been found that girls, who are just a few hours old, are more sensitive to touch than the boys. In fact, baby girls react more to short sudden blow of air on their belly and start wriggling the body due to discomfort. Baby girls cry more than baby boys when left uncovered. Read More …

Eyesight recovery after 55 years

A 63 year old man from Caucasia regained vision after 55 years.

A Causasian man showed a rare case of regaining functional vision. This man had blood in its anterior chamber of the eye (a condition known as hyphema) and due to this blood he had abnormally high blood pressure in the eyeball. Moreover, the light sensitive back of the eyeball was detached and there was no light perception vision. He was also the patient of diabetes mellitus. Read More …

Bionic Eye

retina medIt is also referred to as “Visual Prosthesis”. This device is intended to restore functional vision. Using space technology scientists have developed ceramic photocells that have the ability of repairing malfunction in the eyes.

Rods and cones are the cells which convert the light into electrical signals and send them to the brain where images are formed. There are millions of them in the eye and nobody can see if they are malfunctioned. But what if these malfunctioned rods or cones are replaced. Scientists at the Space Vacuum Epitaxy Center (SVEC) in Houston found extraordinary photosensitive ceramic materials which can work much like rods and cones. Read More …