According to the American Optometric Association (AOA), children generally should have their first eye exam at 6 months of age, another exam at age three and again at the start of school. Risk-free children should then continue to have their eyes examined every two years until age 18. Children with risk factors for vision problems may need their first eye exam earlier than 6 months of age and may need more frequent eye exams throughout childhood. Examples of risk factors include:
To check for well-formed or valid XML. Note In order to check that XML files are valid, they must have an associated XML Schema. For more information on associating a schema with your XML file, see Assigning Schemas to XML Files.1  Load the XML file you want to check into the XML Designer.2  From the XML menu select Validate XML Data.ote In order to check that XML files are valid, they must have an associated XML Schema. For more information on associating a schema with your XML file, see Assigning Schemas to XML Files. 1  Load the XML file you want to check into the XML Designer.
If you want to add an image to a web page, all you need is HTML. If you'd like to set an image as a background to a web page, you'll need both HTML and CSS. HTML stands for Hypertext Markup Language and is code that tells a browser what to show on a web page.. Open the HTML file in a web browser. Right-click the index.html file, and then open it in the web browser of your choice. 1  When the browser opens, if you don't see the image, make sure the image file name is spelled correctly in the index.html text editor window.