SEIKO OPTICAL PRODUCTS

Click here for detailed information on the eyes.

• Regulatory Function of the Eyes ･･･ Focus-adjusting Mechanism
• Hypermetropia, Myopia and Astigmatism
• Presbyopia

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• Cataracts
• Glaucoma
• Strabismus (Lazy Eye) and Heterophoria
• Ultraviolet Rays and the Eyes
• Asthenopia and Dry Eye

Click here for detailed information on lenses.

• Description of Terminology
• About Types of Lens
• What do the often-used terms “spherical” and “aspheric” mean?
• What are Bifocal Lenses, Intermediate-distance Lenses and Very-close Distance Lenses?
• Lens Coatings

Click here for detailed information on frames.

• Description of Terminology
• Frame Materials and Metal Allergies

Click here for detailed information on selecting spectacles.

• Selecting Spectacles that suit you
• Wearing Spectacles with Lenses for the Middle-aged to Senior Age Groups
• Points to bear in mind when selecting spectacles for children