(HealthDay)—In older women, objectively measured visual impairment is associated with a twofold to more than fivefold increased risk for dementia, according to a study published online April 16 in JAMA Ophthalmology.
Elaine M. Tran, of the Stanford University School of Medicine in Palo Alto, California, and colleagues compared the likelihood of dementia or mild cognitive impairment (MCI) among women with and without baseline visual impairment. The cohort study included 1,061 women aged 66 to 84 years old, 183 of whom had objective visual impairment. Visual impairment was identified through questionnaires and visual acuity measurements with three threshold levels: 20/40 or worse, 20/80 or worse, and 20/100 or worse in at least…
