Crisper vision due to leser distortion on the edges. Uniform Clarity of vision in the centre and the side. Better cosmetic appearance. Natural appearance of the eye does not magnify eyes. Ex :- Our cornea is also aspheric in nature. Aspheric lences is depend upon the shape of the Lens. Aspheric

1. Prepared By:
Rajat kumar singh
Satyendra verma
Ashish Keshari
Anil Chauhan

2. Coating is a covering that is applied to the surface of an
object , usually referred to as the substrate that is called
coating.

3. Why Coating is Done
 Protection
 Appearance
 Clarity
 Fogging

4.  MAR ( Multiple Anti Reflection Coating)
 Tints
 UV (Ultra Violates)
 Scratch Resistant Coating
 Polishes
 Polarized Coating

5.  Allow Maximum Transmission
 Hydrophobic
 Oleo - Phobic
 Anti Static
 Enhance vision in low-light intensity
 Reduce ghost images
 Reduce Power - Ring effect
 Makes ehy more visible
 Easily to wear, Easy to care

6. Spectacle lens without/with hard coating
lens without/with antireflective coating
Spectacle lens without/with hydrophobic
coating
lens without antistatic coating/with LotuTec
coating

7.  Process tinting(vaccine deposition, Dry dipping/bathing).
 Types(Solid , Gradient , Custom)
 Done for sunglasses
 Sunglasses
 Cosmetic purpose
 Protection
 Eye diseases
 Headaches
 Professional(Welding use)

8.  Made for Sunglasses
 Reduce Glare
 Allows to See clearly with less Eye Strain
 Used
 Water Sports , Fishing
 Limitations LCD's, Mobile, ATM.

10.  Done by Bathing in UV Solution before coloration.
 Used for protective purpose
 Used by skiers, mountaineers, Astronomers
 Normal Coating transmit 5% while best quality
Coating allow only 2 % UV Rays.

11.  Applied to all plastic, Trivax and polycarbonate lens.
 Makes soft lens surface the properties of hard surface.
 May be applied to front, back or both surface of a
lence.

12.  Applied to the edges of 3 pieces and half rimless
glasses.
 It reduces the rough and thick appearance of high
proscription.

13. There are Two Types of Lens Design
 Spheric Lens
 Aspheric Lens

14.  Easy on the pocket not expensive
 They can be fitted in to curved frame also

15.  Crisper vision due to leser distortion on the edges.
 Uniform Clarity of vision in the centre and the side.
 Better cosmetic appearance.
 Natural appearance of the eye does not magnify eyes.
 Ex :- Our cornea is also aspheric in nature.
 Aspheric lences is depend upon the shape of the Lens.