contact Lenses

1

• Contact Lenses
• Published by
• https//eyecart.ca/

2

• For visual correction, contact lenses are used
  that are put over the eye's cornea. They perform
  the same correction purpose as traditional
  lenses, or spectacles. In contrast, though, they
  are very small in weight and are transparent for
  all purposes. By either converging or diverging
  the beams of light entering the eye, contact
  lenses help form the picture on the retina of the
  eye.
• Earlier contact lenses were constructed of
  silicon, although these were glass lenses.
  Scleral lenses are large contact lenses spanning
  the entire of the eye's sclera - the white
  exterior lining. Only for a brief duration at a
  time may these unwieldy lenses be worn. With PPMA
  - polymethyl methacrylate - being produced in the
  1930s, plastics were first used in contact
  lenses. In reality, these were hybrid scleral
  lenses, developed in 1936 with a mixture of both
  glass and plastic.
• By the 1950s, even thinner contact lenses were
  made that only protected the eye's cornea and not
  the whole eye. Have a look at contact lenses to
  get more info on this.

3

• Forms of Poor Vision
• Correcting visual deficiencies is one of the main
  applications of contact lenses. Myopia,
  Hyperopia, Astigmatism, and Presbyopia are the
  overall impairments.
• Myopia - is a vision impairment where, in front
  of the retina, the picture of the entity seen is
  created. One can see things that are close during
  this vision deficiency, and not remote objects
  that are distorted. This defect is referred to as
  nearsightedness, too. This is a rather serious
  disability, with over 25 percent of people
  suffering from it in the United States. By
  utilizing concave contact lenses, the defect can
  be corrected.
• Hyperopia - It is often referred to as
  Hypermetropia, because behind the retina the
  picture of the entity is created. It is possible
  to easily see distant things, and the close
  objects tend to be distorted. Hyperopia is most
  generally referred to as farsightedness, although
  in the age range aged 5 to 17, more than 13
  percent of children in the United States suffer
  from it. Through the usage of convex contact
  lenses, the defect may be fixed.
• Astigmatism - This occurs because, in multiple
  meridians, the lens of the eye has more than one
  focal point. Astigmatic persons are unable to see
  in fine detail and need to remedy their blindness
  with cylindrical lenses. Nearly 34 percent of
  American children have this disorder in the 5 to
  17 age range.

4

• Presbyopia - This is a condition that comes with
  age, typically after 40 years of age. The
  disorder occurs when its elasticity is lost to
  the lens of the eye. To rectify this vision
  defect, bifocal contact lenses are required. If
  you wish to learn more about this, visit dry eye.
• Forms of Lenses Touch
• Rigid lenses which did not retain water were the
  original lenses. Which stopped the oxygen from
  getting into the eye's cornea, creating
  inflammation of the eye and other pain.
• Then came the soft hydrogel contact lenses, which
  permitted oxygen to flow to the cornea through
  them. Such lenses have been regarded as
  'respirable' contact lenses. This made it easier
  for contact lenses to be used for longer
  stretches more safely. There are, today
• Wear glasses all day, which are replaced at
  night.
• Extended wear sunglasses, which may be used
  without removal for extended times.
• Lenses that are removable and may be removed
  after a day, a week, or a few years.
• There are also color contacts, which are meant
  for cosmetic purposes. Do you want to learn more?
  Visit eye drops. .
•  

5

• Summary
• Eyecart.ca is Canada's source for doctor
  recommended eye care products delivered directly
  to your home or workplace. We offer a wide range
  of brand name contact lenses, eye drops, dry eye
  products, nutritional supplements, and more with
  fast shipping across Canada. Our highly
  competitive pricing allows Canadians to save on
  their eye care purchases and our industry leading
  rewards programs provides further discounts
  through coupon codes when new users are referred
  to us and provides automatic loyalty discounts to
  repeat buyers. We are authorized retailers for
  Acuvue, Alcon, Bausch Lomb, and CooperVision
  contact lenses in addition to Labtician-Thea,
  I-Med, and Candorvision dry eye products.
  Purchases from our website can be submitted for
  reimbursement by insurance plans where
  applicable.
• Visit this site to learn more
• https//eyecart.ca/
•