Eyes and Vision Facts and Information

The human eye is one of the most complex organs we have in our body and enables the most important sense in our nature: vision. It provides food for our memory, a sharp definition of the world around us, and astounding capabilities that are beyond unbelievable. If you're curious to know more about the human eye (and you certainly should be), here are 17 facts that will boggle your mind.

 

 

 

 

 This is only for your information, kindly take the advice of your doctor for medicines, exercises and so on.     

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New system lets doctors see under patients' skin sans scalpel

Doctors could soon put down scalpels and peek under patients' skin, thanks to a new augmented reality system that displays internal anatomy right on the body, scientists say.
 

The system, called ProjectDR, allows medical images such as CT scans and magnetic resonance imaging (MRI) data to be displayed directly on a patient's body in a way that moves as the patient does.
 

"We wanted to create a system that would show clinicians a patient's internal anatomy within the context of the body," said a scientist.

Augmented reality (AR) is a live direct or indirect view of a physical, real-world environment whose elements are "augmented" by computer-generated perceptual information.
 

The technology in the new system includes a motion tracking system using infrared cameras and markers on the patient's body, as well as a projector to display the images.
 

However, the really difficult part, the researcher said, is having the image track properly on the patient's body even as they shift and move.
 

The solution: custom software written by the researcher that gets all of the components working together.
 

"There are lots of applications for this technology, including in teaching, physiotherapy, laparoscopic surgery and even surgical planning," said the researcher, who developed the technology with fellow graduate student.
 

ProjectDR also has the capacity to present segmented images - for example, only the lungs or only the blood vessels - depending on what a clinician is interested in seeing.

Watts is working on refining ProjectDR to improve the system's automatic calibration and to add components such as depth sensors.
 

The next steps are testing the programme's viability in a clinical setting, said a professor.

 

"Soon, we will deploy ProjectDR in an operating room in a surgical simulation laboratory to test the pros and cons in real-life surgical applications," said the researcher. 

THIS IS ONLY FOR INFORMATION, ALWAYS CONSULT YOU PHYSICIAN BEFORE HAVING ANY PARTICULAR FOOD/ MEDICATION/EXERCISE/OTHER REMEDIES.    

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Dead people's eyes may enable blind to see world

Researchers have suggested that cells taken from the donated eyes of dead people may be able to give sight to the blind.

Tests in rats showed that the human cells can restore some vision to completely blind rats.

The team said similar results in humans would improve quality of life, but would not give enough vision to read.

The team extracted a special kind of cell from the back of the eye. These Muller- glia cells - a type of adult cell - is capable of transforming into the specialised cells in the back of the eye and could be useful for treating a wide range of sight disorders.

In the lab, the cells were transformed into rod cells that detected light in the retina, and injecting the rods into the backs of the eyes of completely blind rats partially restored their vision.

Brain scans showed that 50 percent of the electrical signals between the eye and the brain made a recovery after the treatment.

ps- this is only for information, always consult you physician before having any particular food/ medication/exercise/other remedies.

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Now – Glasses which see through the skin!

Nurses and doctors puncture a patient’s skin with a needle in search of a vein around 1 billion times a year in the United States. 

In an effort to make this process less painful and time-consuming, Evena Medical has created Eyes-On glasses, which allow the wearer to peer through the skin and see the vascular structure beneath in great detail, the Verge reported.

The Eyes-On unit uses a spectral approach: it pulses with four different kinds of light that are combined into a single composite image, making the veins stand out against the skin. 

The image of the veins appears very clearly on a connected tablet, which also shows vital signs.

It is also projected in the patient’s field of vision, so that the nurse can see it overlaid on top of the actual body.

After the initial puncture, the Eyes-On glasses can also be used to check for leakage from an IV. 

The Eyes-On glasses will go into mass production this April and are expected to retail for around 10,000 dollars.

I really wish that it gets less expensive too, as it will be a boon to patients like me, who has undergone so many surgeries & hospitalisation, that each time they try to put IV needle, it is a pain for me & for the nurse, as most of my veins are blocked due to repeated IV drips. Even for CT scan, they wanted to put IV in my leg, where it was pocked 4 times in each leg, still they'ld not find any vein, only blood was oozing out & causing more pain to me.

ps- this is only for information, always consult you physician before having any particular food/ medication/exercise/other remedies.

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