- Only one eye rated for muscle dysfunction - whichever is worse
- Color table determines impact - rating based on most impactful color covered, not area size
- Multiple islands increase rating - visual acuity bumped up one level if multiple separate areas of double vision
Above is an example of a completed test.
The grey areas demonstrate areas in which the Veteran has double vision.
Calculating things really is not that bad. In short, it does NOT matter how much of an area is covered. What matters is the greatest area of impact as determined by the the Color table.
IMPORTANT NOTES:
If there are two or more separate separate islands of double vision the assigned visual acuity will be INCREASED by one level (e.g. 20/100 to 20/200).
Only ONE eye can be rated for muscle dysfunction, so whichever one is worse. We will come back to this later.
Left Eye
While a lot of area is covered, the only colors covered are green and blue.
Looking at the Color table we see that this eye would be assigned a visual acuity of 20/70.
Right Eye
This eye has two islands of dysfunction:
The top island - covers green, blue, and yellow. Again, the Color table tells us that that yellow is the most impactful, so the assigned visual acuity would be 20/200.
The bottom island - covers green and blue. So the worst impact from this island is 20/70.
So the right eye gets an assigned visual acuity of 20/200, right?
Wait! Remember the IMPORTANT NOTE?
Since there are islands involved, we need to bump that up that 20/200 to 15/200!
So that means our right eye will end up with an assigned visual acuity of 15/200. Since the VA only allows one rating for muscular dysfunction. Only the Veteran's right eye would get the special treatment while their left eye defaults to it's normal corrected vision.
Conclusion
Using the Rating table for muscle dysfunction, you will end up getting an evaluation of 20%.