Your eye doctor can estimate the amount of astigmatism you have by shining a light into your eye while manually introducing a series of lenses between the light and your eye. This test is called retinoscopy.
Causes of Ketones in the urine (Ketonuria): See detailed list of causes below. Ketones in the urine (medical symptom): The presence of ketones in the urine. The list of medical condition causes of Ketones in the urine (Ketonuria) includes: 1  Uncontrolled diabetes. 2  Glycogen storage disease.  Starvation.
Autosomal recessive inheritance pattern. A genetic mutation causes phenylketonuria. In a person with PKU, this defective gene causes a lack of or deficiency of the enzyme that's needed to process an amino acid called phenylalanine.A dangerous buildup of phenylalanine can develop when a person with PKU eats foods that are high in protein, such as milk, cheese, nuts or meat.For a child to inherit PKU, both the mother and father must have and pass on the defective gene. This pattern of inheritance is called autosomal recessive. dangerous buildup of phenylalanine can develop when a person with PKU eats foods that are high in protein, such as milk, cheese, nuts or meat. For a child to inherit PKU, both the mother and father must have and pass on the defective gene.