The included participants were randomly assigned (1:1) to either the laughter exercise group (n = 149) or the control group using 0.1% sodium hyaluronic acid eye drops (n = 150), both administered ...
Participants in the clinical trial, which took place in 2008, used the drops or a placebo for four months. The short-term trial suggested that the drops gave some patients clearer vision. But the ...
The American Academy of Ophthalmology recommends eye examinations at least every year or two after age 65. Age-related eye ...