The only individual qualified to work in the cleanroom are those who have satisfied all conditions in the document entitled Who is Allowed to Work in the Cleanroom NO makeup shall be worn inside the cleanroom. Food and drinks are prohibited in the cleanroom. Smoking is not allowed 30 minutes before entering the cleanroom. Chewing gum is not allowed in the cleanroom. Avoid wearing contacts.
Contacts can absorb vapors or trap chemicals in the space between the lens and the eye.
In an emergency eye muscles may spasm , preventing removal of the contact lens. Contacts may thus interfere with flushing the eye with water and allow the eyes long and intimate contact with toxic chemicals. If you take your contacts before you enter, don't bring them into the lab and store them near volatile chemicals. Leave them in a safe place outside of the lab. Check your clothing.