Astigmatism Astigmatism is a visual impairment in which the rays of light fall not at one point on the retina, as it does in a …

Even the ancients discovered the truth that the disease is easier to prevent than to cure. I agree with her and modern medicine. Prevention is …

In order to preserve visual acuity until old age, it is necessary not only to consult a doctor when the first signs of trouble appear, …