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Kestenbaum’s rule (Strength of reading plus lens)

Kestenbaum’s rule (Strength of reading plus lens)

Kestenbaum’s rule (Strength of reading plus lens) Kestenbaum’s rule: used to estimate strength of plus lens required to read newspaper print without accommodation Add power = reciprocal of best distance acuity Reciprocal of add power = working distance (in meters)Example: 20/80 vision; add = 80/20 = +4.00 D; working distance = 1/4 (0.25 m) Source: Review of Ophthalmolgy Book Ophthalmology ... Read More »

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