The pupil (the black circle in the middle of the colored iris) may indicate what someone is feeling. Several factors determine the size of the pupil. Primarily, the pupils dilate (get bigger) or constrict (get smaller) to control the amount of light that enters the eyes. In addition, emotions can change the size of your pupils. When you experience pleasure, your pupils briefly dilate. Anger and f
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Is it possible to tell what someone is feeling by looking at only his or her eyes?
Posted by Bharat (#1) 4609 days ago (Editorial)Vision Problems Decreasing in People With Diabetes But Too Few Getting Routine Eye Exams
Posted by Bharat (#1) 4609 days ago (Editorial)
Vision problems and vision loss are known complications of diabetes, but things seem to be getting better. The percentage of adults with diabetes who say they have vision problems has dropped from 24% in 1997 to 17% in 2010. That’s the good news. The not-so-good news is that only 63% of people with diabetes and vision problems get the recommended annual eye exam. To see more details, visit
The Eye Of The Fly: Researchers Discover Possible Key To Degenerative Nerve Diseases
Posted by Bharat (#1) 4609 days ago (Editorial)
Researchers at the University of Wisconsin-Madison and collaborators have discovered a powerful new protein in the eye of the fruit fly that may shed light on blinding diseases and other sensory problems in humans. the scientists note that similar but yet- to-be-identified proteins in the eye and brain could help explain age-related macular degeneration and retinitis pigmentosa, as well as Huntin
Study Describes How Space Flight Impacts Astronauts' Eyes and Vision
Posted by Bharat (#1) 4614 days ago (Editorial)
A new study sponsored by NASA finds that space flights lasting six months or more can cause a spectrum of changes in astronauts' visual systems. Some problems, including blurry vision, appear to persist long after astronauts' return to Earth. The results are affecting plans for long-duration manned space voyages, such as a trip to Mars.Cyanoacrylate Glue Effective in Half of Corneal Perforations.
4. Ophthalmologists Blast Federal Review of Glaucoma Screening
Posted by Bharat (#1) 4614 days ago (Editorial)
Ophthalmologists are crying foul after a draft review from the federal Agency for Healthcare Research and Quality (AHRQ) questioned the effectiveness of glaucoma screening in the general and asymptomatic at-risk populations. The AHRQ review focused on screening both general and at-risk populations for open-angle glaucoma, the most common form of the disease. The analysts identified 72 primary stu
What Is Diabetic Retinopathy?
Posted by Bharat (#1) 4614 days ago (Editorial)
Diabetic retinopathy, the most common diabetic eye disease, occurs when blood vessels in the retina change. Sometimes these vessels swell and leak fluid or even close off completely. In other cases, abnormal new blood vessels grow on the surface of the retina. Diabetic retinopathy usually affects both eyes. People who have diabetic retinopathy often don't notice changes in their vision in the dis
Researchers Say as Many as 1 in 4 Preschoolers Has Vision Problem That Needs Attention
Posted by Bharat (#1) 4614 days ago (Editorial)
Vision problems among preschoolers may be more common than previously thought. That's the conclusion of researchers who conducted two large studies funded by the National Institutes of Health. Previously, it was estimated that one in 20 preschoolers had vision problems. But the studies show that as many as one out of every four preschool-aged children may have a vision problem that needs attentio
How can two brown-eyed parents give birth to a blue-eyed child?
Posted by Bharat (#1) 4614 days ago (Editorial)
The color of your eyes is determined by the genes you inherit from your parents. A gene for brown eyes is dominant. This means it over-rides genes for other eye colors. The gene for blue eyes is recessive. It shows up only when there are no genes for other eye colors. Someone with brown eyes may have a recessive, or "hidden," gene for blue eyes. Therefore, two brown-eyed parents may each give a r