X-Cyl and ImageRx updated. X-Cyl is a toric crossed cylinder calculator. ImageRx is a spectacle magnification calculator. Both programs are free to download.
Entries Tagged as 'Vision Conditions'
X-Cyl and ImageRx
July 3rd, 2009 · No Comments · Contact Lenses, Eyewear, Vision Conditions
Tags:calculator·crossed cylinder·ImageRx·program·spectacle magnification·X-Cyl·XCyl
Lincoln’s Eye Position
February 1st, 2009 · 2 Comments · Ocular Disease, Vision Conditions
If one surveys the available portraits seen on the internet of Abraham Lincoln, a few will show an eye turn. This type of strabismus is called a left intermittent hypertropia. There is a deviation of the left eye upward. Most images show Lincoln’s eyes pointing straight which suggest the problem was not constant. The image [...]
Tags:hypertropia·Lincoln
Bifocal Contacts
January 27th, 2009 · No Comments · Vision Conditions
Around the age of 40, symptoms of presbyopia begin to develop for most people. Presbyopia is the natural loss of focusing due to physiological changes which occur in the lens of the eye. The human lens is responsible for focusing and is normally quite elastic in youth. Beginning in adolescence, the lens gradually becomes more [...]
Why Do Glasses Fail?
January 24th, 2009 · 2 Comments · Eyewear, Ocular Disease, Vision Conditions
Most of the time, you can go to the eye doctor and get a pair of glasses without any trouble getting used to the them. There are occasions when a patient can have trouble adapting to the changes in the prescription written by the doctor. A prescription for glasses is similar to a prescription for [...]
Amblyopia
January 21st, 2009 · No Comments · Ocular Disease, Vision Conditions, Vision Development
Amblyopia or “lazy eye” is a loss of vision which affects approximately 2.5% of all children. It results from a loss of function in the part of the brain which “sees” or responds to the image that is processed by an individual eye. It occurs when one eye does not receive input that is equal [...]