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Latest Visual acuity Stories

Scientists Give Archerfish An Eye Exam
2013-03-21 19:32:08

Brett Smith for redOrbit.com — Your Universe Online Using an eye test developed for the military, Australian scientists from the University of Queensland have determined the visual acuity of archerfish. One of the world´s most unique hunters, archerfish spit a stream of water at their small insect prey — knocking it down into the water where the fish snaps it up. Since the water acts as a barrier for the fish´s senses of smell and sound, the researchers were...

2012-11-12 13:04:51

Study results show need for mandatory visual field testing for drivers The first study to compare accident rates for drivers who have advanced glaucoma – an eye disease that affects peripheral vision – with normal-vision drivers, found that the glaucoma group had about twice as many accidents. This study, which was conducted in Japan using a driving simulator, suggests that potential drivers should pass a visual field test to ensure adequate peripheral vision before a license...

New Sound Device Teaches Blind People To See
2012-11-08 08:57:31

[WATCH VIDEO: Examples of Visual Stimuli Used in SSD Training] Lawrence LeBlond for redOrbit.com - Your Universe Online It has been long believed that blindness in early infanthood makes sight restoration later in life next to impossible as the brain´s visual cortex has been deprived of visual information. But some researchers have shown that blind people, even those with lifelong blindness, can learn to process visual input using sound. Working from the Hebrew University of...

National Healthy Vision Month - ZEISS Online Vision Screening Check
2012-05-17 04:56:32

Connie K. Ho for RedOrbit.com Fuzzy outlines blur your vision. You squint to make out the letters on a sign or on the computer screen. These are a few of the signs that your vision is not as clear as it used to be. To correspond with Healthy Vision Month and the 100th Anniversary of ZEISS Precision Lenses, Carl Zeiss Vision decided to launch the ZEISS Online Vision Screening Check along with a set of online educational tools. Carl Zeiss Vision develops progressive lens, eyeglass...

2012-05-16 21:12:49

A method developed at the Hebrew University of Jerusalem for training blind persons to "see" through the use of a sensory substitution device (SSD) has enabled those using the system to actually "read" an eye chart with letter sizes smaller than those used in determining the international standard for blindness. The eight congenitally blind participants in the Hebrew University test group passed the conventional eye-exam of the Snellen acuity test, technically surpassing the world-agreed...

2012-05-07 09:16:34

Nutriceutical offers hope to those facing blindness There may be new found hope for patients whose vision is threatened when medicine injected directly into the eyes fails to cause abnormal blood vessels to recede. While injectable drugs called angiogenesis (an-gee-oh-jen-esis) inhibitors are considered a modern miracle and have become the standard of care for patients with the fast-progressive form of macular degeneration, they are not foolproof. For the first time researchers report that...

2012-04-11 09:30:04

Just because a driver has passed the motor vehicle administration's vision test may not mean he or she is safe to drive. A recent study found that the frequency and distance at which drivers with moderate levels of blurred vision and cataracts recognize pedestrians at night was severely reduced, even when the drivers have passed the required vision test. "Optical blur and cataracts are very common and lots of people with these conditions continue to drive," said author Joanne Wood of the...

2012-04-10 09:10:30

A randomized controlled trial involving patients with persistent clinically significant diabetic macular edema (swelling of the retina) suggests the greater efficacy of bevacizumab compared with macular laser therapy that was previously demonstrated at 12 months was maintained through 24 months, according to a report published Online First by Archives of Ophthalmology, a JAMA Network publication. Modified Early Treatment Diabetic Retinopathy Study (ETDRS) macular laser therapy (MLT) has...


Word of the Day
vermicular
  • Like a worm in form or movement; vermiform; tortuous or sinuous; also, writhing or wriggling.
  • Like the track or trace of a worm; appearing as if worm-eaten; vermiculate.
  • Marked with fine, close-set, wavy or tortuous lines of color; vermiculated.
  • A form of rusticated masonry which is so wrought as to appear thickly indented with worm-tracks.
This word ultimately comes from the Latin 'vermis,' worm.
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