One of the five types of astigmatism where the entire astigmatic cone falls behind the retina. It occurs when all the meridians contain hyperopia of differing amounts. For example, a measurement of +2.50 +0.50 x 180.
One of the five types of astigmatism where the entire astigmatic cone falls behind the retina. It occurs when all the meridians contain hyperopia of differing amounts. For example, a measurement of +2.50 +0.50 x 180.