About two hours later, each participant underwent vision testing using standard letter-based eye charts
86% (56/66) of patients reported that they would be willing to sacrifice zero lines on the Snellen eye chart
to receive 4 lasers as opposed to 15-16 shots, followed by 8% (5/66) who answered that they would sacrifice 2 lines and 6% (4/66) who would sacrifice one line on the Snellen eye chart
Immediately prior to chiropractic examination and treatment, visual acuity was assessed by one of two investigators, both chiropractic interns, using a Snellen eye chart
. Patients were requested to remove eye glasses before testing, and to stand 20 feet away from a wall-mounted eye chart
The older adults performed as well as those 40 years younger and were also better able to make out letters on an eye chart
at reading distance.
Regular tests since have shown his left eye has gradually improved - and he can now read the fifth line down on an eye chart
with the aid of prescription lenses.
Saurabh Jha of Rutgers University in Piscataway, N.J., a member of the Cluster Lensing and Supernova survey with Hubble (CLASH) team, said they have found supernovae that can be used like an eye chart
for each lensing cluster.
However, because most driver's license eye tests check only central vision (like reading an eye chart
), it's possible for a person to pass the vision test even if he or she has advanced glaucoma.
In fact, the results have been so good that many study participants are now able to move 12 metres further away from an eye chart
and still read what's on it.
"Using the familiar eye chart
or a hand-held reading card, we assess your ability to see small detail clearly at distance and near.
Assessing your visual field Because most drivers license eye tests check only your central vision (imagine reading an eye chart
at the ophthalmologist's office), its possible to pass the vision test to get a license even if your glaucoma is at an advanced stage.
* Eye chart
: Your office has an eye chart
, but you can't find it.
To screen that number of kids with an HOTV eye chart
, it would normally take days and require a much larger team."