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 Spectacles are the most widely used visual instrument in
  the world
 Spectacles, also known as Glasses, are frame
  bearing lenses worn in front of the eyes.
 They are normally used for vision correction or eye
  protection.
 Approximately 207 million people wear
  glasses.
 About 64% adults wear eyeglasses.
 Nearly 3 million children under 4 years wear
  spectacles.
 Chinese used special type of spectacles to protect      their
  eyes in hazardous situation.
 Egiptians first invented the method of magnification    of a
  particle eith the help of polished rock crystal.
 Eyeglasses first appeared in Pisa, Italy, around the    year
  1286.
 The first known artistic representation of eyeglasses   was
  designed about 50 years latter.
Types of Spectacles



Some other types of Spectacles:

Photochromic Lenses               Trifocals


Bifocals                          Varifocal
Spectacle frame consist of:

Metal Frame
   Pure Titanium frame
   Non-Allergenic Nickel coated frame
   Stainless steal frame
   Titanium alloy Frame
Plastics Frame
Lens Materials:
   Glass Lenses
   Plastic Lenses (CR39)
   Hi-Index Lenses
   Polycarbonate Lenses
   Aspheric Lenses
Keeping glasses in a hard case
Cleaning with warm soapy water
Taking off before sleeping
Keeping the Screws of the spectacles Tight
To avoid touching the lens while removing from
 eyes
Light Weight
Least Thickness
Comfortable Frame
Photochromic Eyeglasses
Anti-Reflective Coating
Anti Scratch Coating
Pros and cons of wearing spectacles
Pros and cons of wearing spectacles

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Pros and cons of wearing spectacles

  • 2.  Spectacles are the most widely used visual instrument in the world  Spectacles, also known as Glasses, are frame bearing lenses worn in front of the eyes.  They are normally used for vision correction or eye protection.
  • 3.  Approximately 207 million people wear glasses.  About 64% adults wear eyeglasses.  Nearly 3 million children under 4 years wear spectacles.
  • 4.  Chinese used special type of spectacles to protect their eyes in hazardous situation.  Egiptians first invented the method of magnification of a particle eith the help of polished rock crystal.  Eyeglasses first appeared in Pisa, Italy, around the year 1286.  The first known artistic representation of eyeglasses was designed about 50 years latter.
  • 5. Types of Spectacles Some other types of Spectacles: Photochromic Lenses Trifocals Bifocals Varifocal
  • 6. Spectacle frame consist of: Metal Frame  Pure Titanium frame  Non-Allergenic Nickel coated frame  Stainless steal frame  Titanium alloy Frame Plastics Frame
  • 7. Lens Materials: Glass Lenses Plastic Lenses (CR39) Hi-Index Lenses Polycarbonate Lenses Aspheric Lenses
  • 8. Keeping glasses in a hard case Cleaning with warm soapy water Taking off before sleeping Keeping the Screws of the spectacles Tight To avoid touching the lens while removing from eyes
  • 9. Light Weight Least Thickness Comfortable Frame Photochromic Eyeglasses Anti-Reflective Coating Anti Scratch Coating