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.
Color temperatures of standard fluorescent lamps such as Warm White = 3000K, Cool White = 4100K, Daylight = 6500K. The following color temperature chart shows the typical color of light related to Kelvin degrees, and type of lamp with these characteristics. Color Rendering Index (CRI) is a numerical system that rates color rendering ability of fluroescent light in comparison with natural sun light, which has a CRI of 100.