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Bifocals
Multifocal
Progressive
CR39 (Plastic)
Glass

OPHTHALMIC   LENSES

These can be broadly classified into

  • Glass
  • CR39 (Plastic Lenses)

Salient features of glass lenses:

Glass lenses are available in White Pink and Photo-chromatic (Grey and Brown). Glasses are heavier compared to CR39 lenses. The risk of breakage is also very high in the case of glass lenses.

HI-INDEX LENSES

These are a type of glass having higher refractive index. They are recommended for high power prescriptions in order to reduce the thickness of the lenses. This is particularly more effective in high minus where it reduces the thickness of the lens and proportionately the weight, compared to ordinary glass of the same power. It further enhances the cosmetic look by largely eliminating the peripheral concentric rings present in high minus powers.

Regular Lens

 High - Index Lens


Regular Lens


High-Index Lens

A Lens minus lens in Hi-Index with Anti-Reflection coating can really make your spectacles feel like as though you are wearing a frame alone. The Lens looks absolutely in conspicuous. Hi-Index lenses are available in clear white glass tinted glass and photochromatic glass version.

Hi-Index lens available in CR39 (Plastic) in clear white only.

ANTI-REFLECTION COATING

The A.R. coating is a film coated on the surfaces of opthalmic lenses to combat glare from reflecting sources at working place and the dazzle from the head lights of oncoming vehicles while driving at night.

Conventional Lenses

Lenses with Multi Coated


Conventionallens


Multicoated Lens

The A.R. coating is also available in high power glasses especially minus where  it enhances the cosmetic value of the sepectacles: Lenses without antireflection coating transmits only 92% of light through the lens and the remaining 8% is reflected. With Anti- reflection coating, the transmission can be increased to 99% from 85%, thus improving the clarity of vision and eliminating ghost images of objects viewed.

Advantages :

  • Eliminating Reflections.
  • Filter out Ultra-Violet Light
  • Makes your glasses lens conspicuous and hence more attractive.
  • Reduces eye fatigue in office and under artificial light.
  • Helps to avoid glare during night driving from an on coming car headlight.