Eye wash is a sterile solution, typically a saline solution (like 0.9% sodium chloride), used to rinse the eyes. It's a crucial first aid measure for eye irritation, chemical splashes, or when foreign objects like dust or particles get into the eye. The main purpose is to quickly flush out harmful substances and prevent further damage or irritation. 

Key aspects of eye wash:

• Purpose: To cleanse the eyes of foreign materials, chemicals, or irritants. 
• Ingredients: Often a sterile saline solution (e.g., 0.9% sodium chloride). 
• Application: Used in eyewash stations or with individual bottles for emergency flushing. 
• Importance: Prompt rinsing is vital for minimizing eye injury from chemical exposure or foreign objects. 
• Standards: ANSI standards (in the US) outline requirements for eyewash stations, including placement and proper use. 
• When to use: In workplaces, laboratories, or situations where eyes might be exposed to chemicals or debris. 
• Duration: Rinsing should be done for a recommended duration, often around 15 minutes, to ensure thorough cleaning. 
• Further care: If pain or discomfort persists after rinsing, seek medical attention.