To study the common food adulterants in honey, turmeric powder, Chilli powder and pepper
Question: Your eyeballs are 3.5% what
Answer: Salt
The statement “Your eyeballs are 3.5% salt” refers to the salinity of the fluids inside your eye, including the aqueous humor, vitreous humor, and tears.
Why 3.5% Salt?
- The fluids in your eye are saline solutions — mostly water mixed with sodium chloride (NaCl) and small amounts of minerals like potassium and calcium.
- The average salinity is about 3.5%, which is roughly the same as the salinity of seawater.
Why Do Eyes Need Salt?
- Osmotic Balance: Maintains proper eye pressure and prevents shrinking or swelling.
- Clear Vision: Keeps the cornea hydrated and transparent.
- Protection: Salt creates a hostile environment for bacteria, protecting the eyes from infection.
In short: Your eyeballs are about 3.5% salt. This balance helps maintain their shape, hydration, and defense — similar to how seawater’s salinity works.
Fun fact: This is why tears taste salty — they share the same saline composition as your eyeball fluids!
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Image Credits: Freepik
