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."