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.
Brightness (how much light the projector can produce) is measured in âANSI lumens.â The brightness level that you need will depend on three factors: the content (movies, presentations, games, etc.); the image size (measured diagonally in inches); and the brightness of the room (ranging from dark to full lights).