Not sure.  I just know that at night as I move my eye(s) around there is 
no noticable null in my vision.  Perhaps my cones are more sensitive to dim 
light.
>
>So you have more rods than most at the fovea, Chris?  Or perhaps your 
>>blind spot is slightly differently placed in each eye, giving you 
>>overlap – like the optic nerve blind spot.
>
>> 
>>     I must have a very high number of rods, as my night vision is 
>>well above average.  I also do not seem to have a night "blind spot".
>
Chris
When the going gets weird, the weird turn pro 
     - Hunter S. Thompson
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