Thursday, May 18, 2006

Visual Field Test Japan

Visual field test done in Japan. Eyesight destroyed by radiation therapy. Radiotherapy causing blindness.
Above is the visual field test which I had done in Japan on Tuesday May 16 this year, 2006.
Earlier, back in January, I wrote about a visual field test that I had done on both eyes in Auckland, New Zealand.
At that time, the result indicated a loss of vision in the upper right hand quadrant of each eye and, additionally, some loss of the central vision in the right eye. My ophthalmologist agreed with the notion that this eye damage was caused, in all probability, by the radiation therapy I was subjected to back in 2004.
This time, no test was done on the right eye because the right eye is now blind and useless.
The latest visual field test shows the white area as being those in which I see and the dark areas as being those that I do not see.
The test was the same in Japan as in New Zealand, but for two points.
For a visual field test, you stare at a fixed point on a screen, without chasing any flashing lights you might see, and you click a button every time you see a flashing white light.
A computer generates an image showing the result, as pictured above.
The first difference was that, in Japan, before the test began, they displayed, on the screen, four orange lights, which made a diamond pattern on the screen. They told me to watch for a flashing white light in the center of the diamond, which I did.
In other words, the first significant difference was that you got to see the flashing white light before you started looking for it. You were shown an example of exactly what you were looking for.
The second difference was that they told me about how long it would take -- ten minutes or so. The first time, I was given no guidance on timing, and, subjectively, I thought the test was about half an hour ago.
Additionally, when I did the visual field test in New Zealand, another person was already hard at work in the same room doing such a test, and so the person supervising the test was reluctant to answer my questions.
That said, the test was essentially the same.
I noticed that some of the flashing lights were much brighter than others, which I assume is because part of the eye was more damaged than other parts.
Before undergoing radiation therapy in New Zealand, I asked about the possibility of eye damage, and was told that I could expect the development of cataracts in a few years, because radiation grazing the backs of the lenses would cause the development of cataracts.
If I had been told that the radiation would result in blindness then I would not have opted for the radiation. I would, rather, have taken my chance.
I asked about this particular point, the risk of damage to the eyes, and I was not adequately informed.
As far as I am concerned, I was lied to. My life was destroyed by a decision made by doctors who did not adequately inform me about a point on which I raised the specific issue.
Burn in hell, you bastards.


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