Bad eyesight has likely plagued humans since they first stood upright Real solutions were not available until the 13th century, when eyeglasses and contact lenses were invented.

Late in the 1880s, two eye doctors and a medical student independently invented lenses Doctors Adolf E. Fick and Eugène Kalt set out to help their patients, whereas medical student August Müller wanted to correct his own nearsightedness.

Early lenses were literally a glass lens in direct contact with the eye. For their comfort and health,users could only wear them for brief periods as the lenses caused pain, swelling, and cornea hypoxia. Despite these drawbacks, more than 10,000 pairs were sold.

In the United States from 1935 to 1939 By 1949, sales had reached 200,000. Thanks to the plastic polymethylmethylpropenoate (PMMA) and Kevin Tuohy’s 1948 invention of plastic lenses.

PMMA still caused corneal hypoxia and was replaced in the 1950s by hydroxyethylmethacrylate (HEMA), but these lenses required polishing. Bausch & Lomb introduced their revolutionary SofLens in 1971. In the twenty-first century, the number of people who wear contact lenses surpassed 100 million.

The first silicone-hydrogel contact lenses were released in 2002.

Advanced soft lenses known as silicone hydrogel contacts allow more oxygen to reach the cornea than conventional soft (“hydrogel”) contacts.

In fact,compared to conventional hydrogel lenses,silicone hydrogel lenses allow up to five times as much oxygen to reach the cornea.

2002 FDA approval for overnight orthokeratology

The fitting of specially made gas permeable contact lenses for nocturnal wear is known as orthokeratology (ortho-k).

It restructure the cornea of your eye while you sleep so when you wake up the next morning and take the lenses,you can see perfectly.

Custom silicone-hydrogel lenses start to be made available in 2010.

For difficult-to-fit eyes, a number of contact lens manufacturers now provide soft contacts with specific designs. For a better fit,these designs offer a wider range of curvatures and powers,smaller and bigger diameters than traditional soft lenses.

In terms of safety and comfort, contact technology has advanced significantly. Consider how far contact technology has advanced when you put your contacts in the next time.