mangio wrote:Thankyou for the list. Some of the eye clinics here suggest an exam
of the optic disc as well.
PCakes wrote:Hi again Garyak..i am familiar with the red cap test ..what if you see reds fine but yellows vary between eyes? same thing?
garyak wrote:My first symptom was also ON. This is very typical of MS. I am an Optometrist myself with MS who has had Optic Neuritis.
To test whether there is vision improvement post liberation I recommend four different tests be done before and after.
1) Have your eyecare practitioner accurately measure visual acuity before and after.
2) Have a Humphrey visual field test before and after.
3) Consider having a test called a Visual Evoked Potential done before and after. This test determines how fast the transmission is along each Optic Nerve and is very sensitive for vision loss from even mild ON.
4) A red cap desaturation test. This can be done on your own. Here are some instructions I copied off the internet;
"The optic nerve is sensitive to red, so when it is damaged, red-colored objects may appear washed-out or faded. Some patients who have optic neuropathy describe a red color as appearing orange or pink.
To test for red desaturation, cover the patient’s weaker eye (if there is one) and ask him or her what color object you are holding. Typically, a red-topped dilating drop bottle can be used for this test. Then, ask the patient to cover the other eye and describe the color relative to the fellow eye.5
Optimally, you should ask the patient to quantify the percentage of red desaturation. For example, if the patient says an object looks 100% red with the stronger eye and 70% red with the weaker eye, record that the patient has a 30% red desaturation in the weaker eye."
As far as eye color changing, I hear patient reports where they claim their eye color ( Iris color ) has changed. This is very subjective and one can be easily fooled into believing something or an event has changed their eye color. Normally there has been no real change unless it can be documented by accurately matched close-up photos before and after in such a way that lighting , contrast etc is the same on both sets of photos. If there is a true change it would most likely be due to a difference in blood flow through iris vessels but only in a blue or green eye. ... my thoughts, gary
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