Intraocular pressure is usually measured by applying a force on the cornea using a tonometer. Although sufficiently accurate, tonometers are only used in ophthalmologist offices and so don’t measure intra-day pressures. They also fail with people post cataract surgery that have a thicker cornea. Researchers at University of Arizona have developed a new device that measures intraocular pressure through the eyelid.
From the University of Arizona College of Engineering:
The self-test instrument has been designed in Eniko Enikov’s lab at the UA College of Engineering. Gone are the eye drops and need for a sterilized sensor. In their place is an easy-to-use probe that gently rubs the eyelid and can be used at home.
“You simply close your eye and rub the eyelid like you might casually rub your eye,” said Enikov, a professor of aerospace and mechanical engineering. “The instrument detects the stiffness and, therefore, infers the intraocular pressure.” Enikov also heads the Advanced Micro and Nanosystems Laboratory.
While the probe is simple to use, the technology behind it is complex, involving a system of micro-force sensors, specially designed microchips, and math-based procedures programmed into its memory.
Emerging economies must act immediately to halt rising obesity rates before the epidemic becomes as severe as it is in first-world countries, according to new report by the Organization for Economic Cooperation and Development (OECD).
The OECD report was published in the Lancet. It characterizes the prevalence of obesity in Brazil, China, India, Mexico, Russia and South Africa. Obesity rates were found to vary dramatically across these six countries. In Mexico, a stunning 70 percent of adults were reported to be overweight or obese. Nearly half of all Brazilians, Russians and South Africans fell into these categories. China and India had a lower prevalence of overweight and obesity, but were moving rapidly in the wrong direction, according to the OECD.
Developing nations don’t have enough resources to handle the health consequences of obesity, which include an increased risk of cardiac disease, stroke, cancer, diabetes, arthritis, and disability from all causes.
MedPAC has released another report in which they have tried to explain variation in healthcare utilization among metropolitan statistical areas (MSAs), of which there are approximately 400. MSAs more-or-less correspond to Dartmouth’s 306 hospital referral regions (HRRs), and the conclusions reached by the Dartmouth folks and MedPAC tend to correspond. In commenting about MedPAC’s last report, issued in December 2009, I noted that the major variation was caused by high Medicare expenditures in seven southern states, where patients are poorer and sicker and use much more care.
In their new report, MedPAC went a step beyond measuring expenditures, which they adjusted for prices and other factors in their last report, to measuring the actual units of service, a far better way to assess the healthcare system. MedPAC’s new findings on the distribution of service use in MSAs are graphed below:
Based on this new approach, MedPAC concluded: “Although service use varies less than spending, the amount of service provided to beneficiaries still varies substantially. Specifically, service use in higher use areas (90th percentile) is 30 percent greater than in lower use areas (10th percentile); the analogous figure for spending is about 55 percent. What policies should be pursued in light of these findings is beyond the scope of this paper, which is meant only to inform policymakers on the nature and extent of regional variation in Medicare service use. However, we do note that at the extremes, there is nearly a two-fold difference between the MSA with the greatest service use and the MSA with the least.” Read more »
Dr. Charles Limb is an otolaryngologist, and he’s also on the faculty at the Peabody Conservatory of Music. Wanting to study creativity on the neurological level, he used fMRI to scan the brains of musicians while improvising along with them. Here he describes the experiment, including the building of an MRI-compatible electronic keyboard:
Just about everybody agrees that kids should eat breakfast every day. Breakfast improves their overall nutrition and their performance in school, among other things. But how helpful can breakfast really be if it consists of cereal deluged in sugar?
“Not very” is the answer.
Thankfully, a new study by Jennifer Harris and colleagues at Yale suggests that kids are perfectly willing to consume low-sugar cereals instead, particularly if they can add a pinch of table sugar or fresh fruit to the mix.
To evaluate kids’ willingness to eat low-sugar cereals, Harris’ team randomized 91 kids between the ages of five and 12 to two groups. Kids in the first group were offered low-sugar cereals like Cheerios, Corn Flakes, and Rice Krispies, which contain one to four grams of sugar per serving. Kids in the other group chose between Cocoa Pebbles, Frosted Flakes and Fruit Loops, which contain about 12 grams of sugar per serving.
Kids in both groups were also offered orange juice, 1 percent milk, pre-cut sections of bananas and strawberries, and sugar packets. The kids served themselves and then completed a questionnaire about their breakfast. Read more »
*This blog post was originally published at Pizaazz*
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Intraocular pressure is usually measured by applying a force on the cornea using a tonometer. Although sufficiently accurate, tonometers are only used in ophthalmologist offices and so don’t measure intra-day pressures. They also fail with people post cataract surgery that have a thicker cornea. Researchers at University of Arizona have developed a new device that measures intraocular pressure through the eyelid.
