The presence of cylindrical power indicates the presence of astigmatism which has an axis measured from 0 to 180 degrees away from being aligned horizontally.
Measured from 0 to 180 degrees away from being aligned horizontally. The presence of cylindrical power indicates the presence of astigmatism.
The presence of cylindrical power indicates the presence of astigmatism. Measured from 0 to 180 degrees away from being aligned horizontally.
The presence of cylindrical power indicates the presence of astigmatism. Measured from 0 to 180 degrees away from being aligned horizontally.