According to the report, the cost of installing sprinkler systems to the home builder averaged $1.61 per sprinklered square foot. The cost of sprinkler systems to the home builder, in dollars per sprinklered square foot, rangedfrom $0.38 to $3.66.
A refraction test is usually given as part of a routine eye examination. It may also be called a vision test. This test tells your eye doctor exactly what prescription you need in your glasses or contact lenses.Normally, a value of 20/20 is considered to be optimum, or perfect vision.our doctor may also do this test without the help of a machine. In this case, he or she shines a light into each of your eyes and looks at the amount of light that is bouncing off your retina to measure your refractive score. Afterwards, your doctor will need to determine exactly what prescription you need.
1 Usually, each eye is tested by itself. 2  And then both eyes may be tested together, with and without corrective lenses (if you wear them). 3  Several types of visual acuity tests may be used. 4  A refraction test shows your level of refractive error and finds out the right prescription for glasses or contact lenses. Usually, each eye is tested by itself. 2  And then both eyes may be tested together, with and without corrective lenses (if you wear them). 3  Several types of visual acuity tests may be used. 4  A refraction test shows your level of refractive error and finds out the right prescription for glasses or contact lenses.