If the person can't accommodate and the glasses is + 2.50d, at which distance will the person see clearly

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patriciamarielp8u6ue patriciamarielp8u6ue

16-05-2018
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If the person can't accommodate and the glasses is + 2.50d, at which distance will the person see clearly

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wittysharky22 wittysharky22 · Answer 1 · 2018-05-26T05:34:06+02:00

When a person is about 40-50 years old, the ability to accommodate has been lost at all. From then on, the “add” determines your point of best focus and having the focal length of a +2.50D lens means that the person can see clearly at 2/5 meter.

Moreover, in a positive diopter measurement, use 1 as the numerator to find the distance in meters then take the value of 2.5 and make it the denominator. Then, you will have1/2.5, which is equal to 2/5 of a meter.

saadhussain514 saadhussain514 · Answer 2 · 2018-11-03T10:08:56+01:00

Distance the Person will see Clearly

P= + 2.50

f = 1/p = 1/+2.50 = 100/2.50

f = 40 cm 200/5 = 40cm

To a + diopter estimation is a shortsighted man know the amount of 2.5 and give it the denominator with 1 as the numerator to obtain the distance in meters that they can recognize definitely beyond their face 1/2.5 .