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Latest Pupil Stories

Mental Imagery Can Change Pupil Size
2013-12-03 15:45:37

[ Watch the Video: Thinking About Light Can Change Your Pupil Size ] Brett Smith for redOrbit.com - Your Universe Online Animals involuntarily constrict or dilate their pupils if they are sensing either too much or not enough light entering the eye, respectively. Now, a new study from a pair of Norwegian researchers has found that simply imagining a scene that is either too brightly or dimly lit can affect the size of your pupils. "Visual imagery is a private and subjective...

2012-09-05 23:00:13

Konan Medical USA's new RAPDx high definition pupillograph has received Europe's CE Mark and sales will begin in Europe and other countries recognizing the CE Mark beginning at the largest European Ophthalmic congress, the ESCRS, in Milan, Italy. Irvine, CA (PRWEB) September 04, 2012 Konan Medical USA, Inc. has announced that its RAPDx® pupillograph for screening of defects in pupil function has received the European CE Mark. The CE Mark identifies that the RAPDx device has met the...

Women Have Bigger Pupils Than Men
2012-04-26 10:23:25

From an anatomical point of view, a normal, non-pathological eye is known as an emmetropic eye, and has been studied very little until now in comparison with myopic and hypermetropic eyes. The results show that healthy emmetropic women have a wider pupil diameter than men. SINC Normal, non-pathological emmetropic eyes are the most common type amongst the population (43.2%), with a percentage that swings between 60.6% in children from three to eight years and 29% in those older than 66....

2012-01-27 15:00:33

The eyes are the window into the soul–or at least the mind, according to a new paper published in Perspectives on Psychological Science, a journal of the Association for Psychological Science. Measuring the diameter of the pupil, the part of the eye that changes size to let in more light, can show what a person is paying attention to. Pupillometry, as it´s called, has been used in social psychology, clinical psychology, humans, animals, children, infants–and it should be used...

2009-08-05 09:29:00

BURLINGTON, N.J., Aug. 5 /PRNewswire/ -- Most people over the age of 40 begin to experience Presbyopia which is the increased difficulty to focus on nearby objects. Although this age related phenomena is usually assisted by reading glasses, a current study performed at the Kajita Clinic in Tokyo, Japan and published in March, 2009 has shown significant improvement in the ability to focus on nearby objects in older subjects (mean age of 53.9 +/- 5.1 years) with supplementation of the...

e91d4cf447891fa616feb2e147026a2e
2009-01-01 10:25:09

A team of Johns Hopkins neuroscientists has worked out how some newly discovered light sensors in the eye detect light and communicate with the brain. The report appears online this week in Nature. These light sensors are a small number of nerve cells in the retina that contain melanopsin molecules. Unlike conventional light-sensing cells in the retina"”rods and cones"”melanopsin-containing cells are not used for seeing images; instead, they monitor light levels to adjust the...


Word of the Day
call-note
  • The call or cry of a bird or other animal to its mate or its young.
'Call-note' is newer than 'bird-call,' which originally referred to 'an instrument for imitating the note of birds' but now also refers to 'the song or cry of a bird.'
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