How to Calculate your Prescription for Reading Glasses alone !
https://moderneyesoptic.com/index.php/reading-glasses/
Please Kindly Select “Recommended Power ” according to YOUR AGE
Most persons over the age of 40 may need reading glasses at some point.
| Age | Recommended Power |
| 40 to 45 | +0.75D to +1.00D |
| 45 to 50 | +1.00D to +1.50D |
| 50 to 55 | +1.50D to +2.00D |
| 55 to 60 | +2.00D to +2.50D |
| 60 to 65 | +2.50D to +3.00D |
| 65 to 70 | +3.00D to +3.50D |
| Over 70 | +3.50D to +4.00D |
Spanish Version
Para una pantalla de computadora, o distancia de brazos, generalmente
usaría la mitad de la potencia de adición prescrita en su Rx para las
gafas de computadora y agregar eso a la esfera original de la receta.
Con una receta original ponemos un ejemplo que podría ser:
O.D.- SPH-1.00 CYL-0.50 AXIS 90 ADD +2.00
O.S.- SPH-1.25 CYL-0.25 AXIS 75 ADD +2.00
Phoropter para hacer esta medidas
Para usar esas medidas para leer su computadora :
A continuación, tomaría la mitad de la potencia de adición +2.00, que sería +1.00, y luego agregarlo a la SPH (o Esfera) de la receta.
La potencia adicional se calcula generalmente para una distancia de 12 a 18 pulgadas para la lectura. la mitad de esa potencia sería para aproximadamente 24 a 36 pulgadas de distancia de lectura (aproximadamente la distancia promedio de un monitor de computadora) que la prescripción se vería algo como esto:
O.D.- SPH -1.00 + 1.00 (HALF OF ADD)
O.S.- SPH -1.25 + 1.00 (HALF OF ADD) - 0.25
La nueva receta para la lectura por computadora entonces sería:
O.D.- SPH 0,00 CYL-0.50 AXIS 90
O.S.- SPH -0.25 CYL-0.25 AXIS 75
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Para gafas de lectura solamente, aplicar el siguiente método
Seleccionar y añadir la potencia de añadir para leer gafasComience a los 40 años de edad, 1 a 1,25 DS
Una forma de seleccionar la potencia es de esta manera:
Una manera bastante simple, pero efectiva de determinar añadir potencia es usar la tabla de Eggers para cerca.
Una regla general que funciona bien, establece que a la edad de 40 a +1.00 a +1.25 agregar será necesario. Por cada 5 años después de 40, y se requiere +.025 adicional.
(Ejemplo: para un hombre o una mujer que tiene 69 años, su poder de adición será, +1.25 + (+.25 x 4 x 1.00) a 2.25 DIOPTRÍAS EN CADA OJO.
La Prescripcion original es la siguiente:
O.D.- SPH-1.00 CYL-0.50 AXIS 90 ADD +2.25
O.S.- SPH-1.25 CYL-0.25 AXIS 75 ADD +2.25
La nueva prescripcion para los bifocales SE CALCULA y seria la siguente:
O.D. - SPH -1.00+2.25 = +1.25
O.D. - SPH -1.25+2.25= +1.00
Y se escribiria como:
OD SPH +1.25 CYL -0.50 AXIS 90
OS SPH +1.00 CYL -0.25 AXIX 75
En general solo tenemos que dar la Rx original al laboratorio y ellos hacen el resto de calculos para lentes Bifocales.
O.D.- SPH-1.00 CYL-0.50 AXIS 90 ADD +2.25
O.S.- SPH-1.25 CYL-0.25 AXIS 75 ADD +2.25
English Version
How can I calculate my prescription for Reading & computer glasses?
For a computer screen, or arms
length distance, you would generally use half
of the add power prescribed on
your Rx for the computer glasses and add that to the original sphere
power of the prescription.
An example of an Rx written might
be:
O.D.= SPH-1.00 CYL-0.50 AXIS 90 ADD
+2.00
O.S.= SPH-1.25 CYL-0.25 AXIS 75 ADD
+2.00
You would then take half of the
add power +2.00, which would be +1.00, and then add it to the SPH (or Sphere)
of the prescription.
The add power is generally
calculated for a distance of 12 to 18 inches for reading. half of that power
would be for approximately 24 to 36 inches of reading distance (about the
average distance of a computer monitor) that prescription would look something
like this:
O.D= SPH -1.00 + 1.00 (HALF OF
ADD)= 0.00
O.S.= SPH -1.25 + 1.00 (HALF OF
ADD)= -0.25
The
new prescription for computer reading then would be:
O.D.=
SPH 0.00 CYL-0.50 AXIS 90
O.S.= SPH -0.25 CYL-0.25 AXIS 75
For Reading Glasses apply the following method
Select and ADD Power for reading glasses
Start at 40 years old = 1 to 1.25 DS
One way of selecting the power is this way:
A fairly simple, but effective way to determine add power
is to use the Eggers Chart for near.
A rule of thumb that works well, states that at age 40 a +1.00 to +1.25 add will be required. For each 5 years after 40, and additional +0.25 is required.
A rule of thumb that works well, states that at age 40 a +1.00 to +1.25 add will be required. For each 5 years after 40, and additional +0.25 is required.
(Example: for a man or a woman who is 69, his /her add
power will be, +1.25 + (+.25 x 4 = 1.00) = 2.25 DIOPTERS ON EACH EYE.
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Referencias:
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