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LV MT2 Eq
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Ratio of comparisons
Kestenbaums method
Inverse of BCVA
Conventional mag
Mag = D/4 + 1
Effective mag
Mag = D/4
Convergence demand
Convergence = MA x PD (in cm)
MA = 100/WD
Prism for half eyes
Plus power + 2 for each eye
Equivalent power
Fe = F1 + F2 - d(F1)(F2)
HHM FoV
W = d x (f/h)
W = linear width of field
d = diameter of lens
f = focal length of mag
h = distance of lens from eye
Equivalent power for electronic devices
Fe = Mag x F2
Mag of telescopes
Ma = -Foc/Fob
Tube length
Exit pupil of telescope/mag check
Mag = (entrance pupil diameter)/(exit pupil diameter)
Telemicroscope exact formula for vergence
where
L'oc = vergence leaving telemicroscope
L = divergent light hitting objective lens
t = tube length (meters)
Ma = mag of TS
Approximate formula for telemicroscope divargence
Approximate formula for telemicroscope divergence
Stand mag equivalent power
Feq = F2 x ER
Lateral mag of a stand magnifier
ER = (L'-F1)/L' = L/L'
F1 = power of stand mag lens
Working distance of stand mag
f2 - l'
Author
mbills
ID
352528
Card Set
LV MT2 Eq
Description
equations
Updated
2020-07-14T12:09:24Z
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