Thursday, September 25, 2014

Visual Field Test

So it all started with a routine vision checkup in early September 2014. Part of the eye checkup involved the Visual Field test, designed to test the peripheral vision. It is a fairly common test and it involves looking at a small screen through a (perimetry) machine (one eye at a time) and press on a clicker every time we see something blinking on the screen. It just took a few minutes to complete the test for both eyes.

My eye doctor showed me the report after the test and notified me that I didn't do that well - apparently my peripheral vision wasn't that good in the lower left quadrant of my "eyes". Yeah, the problem was in the exact same spot in both my eyes. It is called Left Quadrantanopia. Looking at the report (see below) it looked like I had lost about 20% of my peripheral vision in both eyes. I actually didn't experience or notice this in the real world, but that is what the test uncovered.




I was sitting there mildly concerned about my eyes and then my doctor said something I totally didn't expect - apparently problems in the exact same spot in both eyes usually indicate a problem external to the eyes, with things like optic nerve, optic tract or with something else in the brain (wait, what? brain?) Should I be relived that my eyes are fine? or should I be concerned that something else may be off, way off? I wasn't sure.

She asked me to come back in a couple of weeks to do an extended version of the same test. I tried to dodge it, but she insisted I come back, so I set a date in about 2 weeks. For whatever reason, I wasn't concerned much and I didn't even bother to tell my wife about this.

And so I took the test again on Sep 18th. And, surprise, I failed again. She explained to me how I had failed very consistently and insisted that I get a MRI done soon. So I scheduled my MRI right away for the following week.

And after thinking about it for sometime, I decided not to tell my wife about this, not yet. I was naively hoping this was going to be a false alarm and there was no point in making her worry about nothing.