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Out of 77 patients, we could record visual acuity of 74 patients on Snellen's chart.
Best-corrected visual acuity on Snellen's chart at the last visit had deteriorated in 2.
Visual acuity (VA) was recorded with Snellen's chart and Near vision chart.
It is useful to evaluate visual acuity by means of a Snellen's chart to exclude refractive errors that may cause headache.
90% of patients had improvement in their visual acuity by one or two lines with Snellen's chart (Fig: 4).