The average sliding 31-day rainfall during September in Dublin is increasing, starting the month at 2.1 inches, when it rarely exceeds 3.5 inches or falls below 0.6 inches, and ending the month at 2.6 inches, when it rarely exceeds 4.3 inches or falls below 1.1 inches.
Astigmatism can be diagnosed through a comprehensive eye examination. Testing for astigmatism measures how the eyes focus light and determines the power of any optical lenses needed to compensate for reduced vision. This examination may include: 1  Visual acuity âAs part of the testing, you'll be asked to read letters on a distance chart.
By including the SPH means this eye doesnât have astigmatism and only spherical power is being added to that lens. In this situation your left eye is being prescribed -2.00 diopters along with a -0.5 diopter cylinder. The axis measurement is 180 and will add -0.5 diopters to correct the astigmatism.