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.
The circle with a dot in the center is perhaps one of the simplest and most incredible of symbols. The circumpunct has been used for an incredibly long time. The symbol once was a representation of the sun, and as such as been the symbol to represent the Archangel Michael. The circumpunct is also the alchemical symbol for gold.