A recent study has reported a significant association between cataract extraction and reduced risk of dementia in patients aged 65 years and above. Study Design Key findings Participants who had undergone cataract extraction presented with a significantly reduced risk of dementia (hazard ratio, 0.71; 95% CI; P<0.001) in comparison to those who did not undergo cataract surgery. Glaucoma surgery did not show statistically significant results when evaluated for association with reduced risk of dementia (hazard ratio, 1.08; 95% CI; P=0.68).
The study suggested a rationale for the positive association between cataract extraction and reduced risk of dementia: Visual impairment may cause psychosocial difficulties, social withdrawal, and diminished physical activity or exercise, eventually leading to cognitive decline. Cataract-related visual impairment may reduce neuronal input, causing…
