What Are the Marks on My Contacts For?
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Lens Types
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Lenses are available in hard, soft and breathable varieties. Hard contacts are modernly used for slowing and correcting nearsightedness.
History
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The first hard plastic lenses were invented in 1936. Soft contacts were created in the 1950s, making wearing contacts far more comfortable.
Mark
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Soft contact lenses contain a small mark to help the user see the right side of the lens. If the mark looks stretched or angled outward, then the lens is inside out.
Advantages
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Marking soft contacts allows users a quick and easy way to verify a good fit and rule out a wrong-sided contact as the problem if contacts are not remaining in place.
Fun Fact
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In 1887, a German glass blower created a lens that fit over the entire eye and could be worn for up to three hours.
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