Hard Multi Coated 1.50 Index Lenses , Round Top Prescription Eyeglass Lenses 28 Segment

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Hard Multi Coated 1.50 Index Lenses , Round Top Prescription Eyeglass Lenses 28 Segment

Model: 1.499 RT-28 HMC
Brand: Aogang
Code: 1.499 RT-28 HMC
Refractive Index: 1.499
Diameter: 70MM
Monomer: CR39
Abbe Value: 58
Specific Gravity: 1.31
Transmission: 97%
Coating Choice: HMC/AR/Anti-Reflective
Power Range: SPH:-300~+300, ADD:+100~+350

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Product Description

Production	Monomer	Diameter
1.499 RT-28 HMC	CR39	70MM
Abbe value	Specific Gravity	Transmission
58	1.31	>97%
Brand	Coating	Delivery Company
Aogang	HMC	Fedex/DHL/TNT/UPS
Round top segment	Guarantee years	Power range
28	5.5 years	SPH: 000~+300,000~-300,CYL:+100~+350

Features

● This is a very convenient type of lens that allows the wearer to focus on objects both at close range and far range through a single lens.

● This type of lens is designed to enable viewing of objects in the distance, at close range and in the intermediate distance with corresponding changes in power for each distance.

Hard Multi Coated 1.50 Index Lenses , Round Top Prescription Eyeglass Lenses 28 Segment

Bifocal lens can be called a multi purpose lens. It has 2 different fields of vision in one visible lens. The larger of the lens usually has the prescription necessary for you to see for distance. However, this can also be your prescription for computer use or intermediate range, as you would normally be looking straight when you view through this particular part of the lens.

The lower part, also called the window, typically has your reading prescription. Since you generally look down to read, this is the logical place to put this range of vision assistance.

Hard Multi Coated 1.50 Index Lenses , Round Top Prescription Eyeglass Lenses 28 Segment

Advantages of round-top bifocals

The wearers can see the near things by the round shape and see the distance things by the rest of the lenses.
The wearers don't need change two different visions glasses when they both reading book and watching TV.
The wearers can keep the same posture when they look both the near thing or far thing.

Coating

Super Hydrophobic Coating:To make the lens waterproof, antistatic, anti slip and oil resistance.

AR Coating/Hard Multi Coating: To protect the lens effectively from reflection, enhance functional and charity of your vision

Hard Coating:To make the uncoated lenses are easily subjected and exposed to scratches