There is a such thing as enhanced eyesight, but there are different branches of it, too.
Branches[]
Look at the vision articles on the SP Wiki for all other powers. These ones are not listed.
- Visual Acuity
- Color Vision
- Frame Rate
Visual Acuity[]
Visual acuity is the power of a being to resolve small details, like the small E on the Snellen eye chart. It is measured using a fraction with 20 as the numerator. The larger the denominator, the worse the eyesight. The actual acuity is an angle. 20/20 corresponds to detail subtending 1 minute of arc (1/60 degree), while 20/1 corresponds to detail subtending 3 seconds of arc (1/20 minute or 1/1200 degree). It is measured using a faraway chart with letters progressively decreasing in size. At an optometrist's office, if the patient cannot resolve the detail in the huge E at the top of the chart (20/200 or 10 arcminutes), he will be pitched against a distance test called Counting Fingers.
Counting Fingers[]
Count Fingers is measured in CF x (x is the farthest the patient can count fingers in feet) and is used for testing people worse than 20/200 (10 arcmin)
- CF 20 = 20/400 or 20 arcmin
- CF 10 = 20/800 or 40 arcmin
- CF 8 = 20/1000 or 50 arcmin
- CF 7 = 20/1143 or 57 arcmin
- CF 6 = 20/1333 or 1.11 degree (67 arcmin)
- CF 5 = 20/1600 or 1.3 degree
- CF 4 = 20/2000 or 1.7 degree
- CF 3 = 20/2667 or 2.2 degree
- CF 2 = 20/4000 or 3.3 degree
- CF 1.5 = 20/5332 or 4.4 degree
- CF 1 = 20/8000 or 6.7 degree
- CF .5 = 20/16000 or 8.9 degree
Eye Chart[]
- Line 1 (E) = 20/200 or 10 arcmin
- Line 2 (FP) = 20/100 or 5 arcmin
- Line 3 (TOZ) = 20/70 or 3.5 arcmin
- Line 4 (LPED) = 20/50 or 2.5 arcmin
- Line 5 (PECFD) = 20/40 or 2 arcmin
- Line 6 (EDFCZP) = 20/30 or 1.5 arcmin
- Line 7 (FELOPZD) = 20/25 or 1.25 arcmin
- Line 8 (DEFPOTEC) = 20/20 or 1 arcmin (60 arcsec)
- Line 9 (LEFOPCT) = 20/15 or 45 arcsec
- Line 10 (FDPLTCEO) = 20/13 or 39 arcsec
- Line 11 (PEZOLCFTD) = 20/10 or 30 arcsec
How to go Farther than Eyechart[]
Just snip the 20/10 (last line) line off the chart and put it farther from you.
Color Vision[]
Color Vision is the ability to see different colors. There is a rare type of person called a tetrachromat, who is specified to see 100 times more colors than normal people. Contrast is also covered under color vision.
Frame Rate[]
Frame Rate is the number of images one sees every second. Seeing at 1 fps is very choppy, Seeing at 1000 fps sees an image every millisecond. Seeing at 1000000 fps sees an image every microsecond.
- Planck frame rate = 18.553 tredecillion frames per ssecond