Approximately 10% of patients report an allergy to penicillin. However, the majority of patients (greater than 90%) may not truly be allergic. Most people lose their penicillin allergy over time, even patients with a history of severe reaction such as anaphylaxis.
Additional lighting equipment is often necessary to compensate the low levels. Earlier it was common with light levels in the range 100 - 300 lux for normal activities. Today the light level is more common in the range 500 - 1000 lux-depending on activity.
Three things must be considered in choosing the right color of fluorescent lamp for a specific application, (1) Color Temperature, (2) Color Rendering Index, and (3) Lumen Output. These factors are independent, and can vary for each lamp. Color Temperature is expressed in degrees Kelvin (K). For example, noon daylight is about 5500 degrees Kelvin - the same as the full spectrum Vita-Lite. Fluorescent lamps with lower color temperatures look red; fluorescents with higher color temperatures look blue.