People in old age have more health problems than younger. More often they are treated the traditional way, using only natural ingredients and homemade recipes.
Our eyes are probably the most important thing we have because they receive about 90% of the information from the real world. But it is precisely this sense suffers the most over the years.
The science has become very developed, so as we know there are glasses and contact lenses that can be used to improve our vision. But they are expensive and not always the solution to our problem.