Contact lenses fit snugly in the eye to correct vision without the need for wearing traditional glasses. The original concept for lenses was first proposed by Leonardo da Vinci in the early 1500s. It took approximately 270 years to design a contact lens that was practical for daily use.
Hormonal adjustments during pregnancy may cause changes to your eyes that make wearing contacts more difficult or uncomfortable. These problems are likely to disappear after you deliver your baby. In the meantime, you may need ...
Ironically, it's not the fans or the media who fail to give the kickers their due. Instead, it's their teammates who regularly give kickers a hard time, because they don't face contact the way offensive and defensive players do...
Poi balls are fixed at the end of a rope, chain or piece of fabric. They can come in 3 different lengths, and are spun around one another in intricate patterns as a part of a dance or performance art. The art of poi originates ...
Archery has had many different applications over time. Arrowhead designs have been created to answer the applications and concerns as they became apparent. This led to a wide variety of arrowheads ranging from warfare and sport...
Hard contact lenses are different than the type of lens most commonly worn today. Most soft lenses are designed for comfort and are usually more durable than hard contact lenses. But if you have astigmatism or are particular ab...
Traditional hard contact lenses made from glass or polymethyl methacrylateas (PMMA) are mostly obsolete, and rigid gas permeable (RGP) contacts are being prescribed in their place. Each pair of contacts is manufactured from a d...
This is often abbreviated as PMMA. This substance differs from the plastic polymer used to make soft contact lenses in that it does not soak up liquids to the same degree. Soft contacts are made up of a lot of water while hard ...
Hard contacts lenses, also called rigid gas-permeable, are small and made of a stiff plastic material. The lenses fit directly over the cornea and correct vision and astigmatisms. There are two methods used to insert hard conta...
The contact lens needs cleaning daily when worn. Proper cleaning and disinfection is required to maintain healthy eyes and avoid infections or other conditions, such as scratching the lens. There are two methods available for c...
Certain surgeries, such as cuts to extract cataracts, can greatly increase the likelihood of developing anisocoria in the future. Similarly, sports injuries, such as head traumas endured in hard contact sports (e.g. football a...
