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Visual acuity is tested from a distance
of 6 metres.
This is to get a rough estimate of a
persons ability to see at a distance.
Local interpreters do a great job.
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The test chart can be like this with
hooks or with letters in different sizes.
Distance is 6 meters.
Helena Hesselmark in action.
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This "flipper" has sets of
lenses in different powers.
Vision for reading is tested with powers
of +1. +2.+3 and +4
The flipper is used instead of a trial
frame with exchangeable test lenses.
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This is how the flipper is used.
Bo Hesselmark in action.
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The reading glasses are all new -bought
from companies in Sweden.
Medium price US$ 1/piece
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Checking the
frames to find a suitable one. |
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Test reading. Even the smallest
print is now visible. |
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After 35 years I can now read my Bible
again.
Thank you, Rotary!
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