Levels can first be detected by a blood test about 11 days after conception and about 12-14 days after conception by a urine test. Typically, the hCG levels will double every 72 hours. The level will reach its peak in the first 8-11 weeks of pregnancy and then will decline and level off for the remainder of the pregnancy.
What should be included: 1  There are many tests included in a routine eye exam, beginning with taking the patient's medical history, asking about everything from family history to current eye issues.  Refraction assessment should be part of the exam, unless the patient requests that the assessment not be included.
Image by Flickr.com, courtesy of Jule_Berlin. In relation to your eyes, refraction refers to how light waves bend as they pass through your cornea and lens. Your eye's ability to refract light determines its ability to focus light, which establishes how well you see. Your eye has a refractive error if it cannot focus an image sharply. Determining the lens prescription needed to correct the error is called a refraction or refraction assessment. Your eye's ability to refract light depends on the overall length of the eye and the curvature of the eye's surface (cornea).