The unique optomap ultra-widefield view helps your eye care practitioner detect early signs of retinal disease more effectively and efficiently than with traditional eye exams. Early detection means successful treatments can be administered and reduces the risk to your sight and health.
An electron dot diagram is a method of writing the chemical symbol of an element by surrounding it with dots to indicate the number of valence electrons. Valence electrons are found in an atom's outer shell and are the ones involved in chemical reactions.
1 A raised dot (also called a middle dot or half-high dot) is recommended when symbols are multiplied. It is permissible to use a space instead, but symbols should not be placed next to one another with nothing between them.  For example, AÂ·h is the recommended symbol for the ampere hour.