Difference between revisions of Optics related math
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* [[Vertex distance]] | * [[Vertex distance]] | ||
* [[Wikipedia:Vertex_distance|Vertex distance formula (also for astigmatism)]] | * [[Wikipedia:Vertex_distance|Vertex distance formula (also for astigmatism)]] | ||
==References== | |||
{{reflist}} |
Revision as of 09:13, 21 June 2020
Here's a page with maths related to diopters and glasses.
You don't really need to know any of this stuff to improve your eyesight, but it's good to know for deeper understanding
Diopters are inverse meters
See Also Diopters
See Also cm Measurement
Remember that 100cm = 1m.
conversely
Point of refraction
See also Refraction
(meters)
(meters)
(meters)
(diopters)
Visual acuity equation
Note: 5Arcminutes = 20/20
Set up proportion:
Visual acuity (mm/metres)
Visual acuity (in/feet)
With text that we are familiar the brain may clear up that text more than our vision actually operates at.[1]
Average axial length accomodation/rate of change
If someone with typical eyes wanted to adapt say 20/20 to .25 less normalized within 3-4 months would need to decrease axial length 0.083mm about 0.92microns/day - 0.69microns/day average Credit: Mark Podowski
Converting from Glasses to Contact Lens Prescription or vice-versa
References
- ↑ The EndMyopia Blog, https://endmyopia.org/use-math-to-turn-any-text-into-your-own-impromptu-eyechart/