Columnar lens means astigmatism, 50 degrees of astigmatism is a very mild astigmatism, this condition usually does not affect the vision, so it is not necessary to deal with. And optometry is the result of the machine, any machine may bring a small amount of error, 50 degrees of astigmatism may be the result of machine error. After the eyes have blurred vision, you should go to a regular hospital for an optometric examination, and a professional optometrist will decide the degree of refractive error. For example, if 50 degrees of astigmatism exists during the optometry, but wearing glasses with 50 degrees of astigmatism is the same as not adding the result, and the vision can reach the normal range, it means that the 50 degrees of astigmatism has no effect on the eyes, and there is no need to add this degree to the lenses when dispensing glasses, so if you want to dispensing glasses, you must go to a regular hospital.