SETO 1.74 single vision Lens SHMC

Short Description:

Single vision lenses have only one prescription for farsightedness, nearsightedness, or astigmatism.

Most prescription glasses and reading glasses have single vision lenses.

Some people are able to use their single vision glasses for both far and near, depending on their type of prescription.

Single vision lenses for farsighted people are thicker at the center. Single vision lenses for wearers with nearsightedness are thicker at the edges.

Single vision lenses generally range between 3-4mm in thickness. The thickness varies depending on the size of the frame and lens material chosen.

Tags:1.74 lens,1.74 single vision lens

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Product Detail

Product Tags

Specification

1.74 single vision optical lens
Model:	1.74 optical lens
Place of Origin:	Jiangsu, China
Brand:	SETO
Lenses Material:	Resin
Lenses Color	Clear
Refractive Index:	1.74
Diameter:	70/75 mm
Abbe Value:	34
Specific Gravity:	1.34
Transmittance:	>97%
Coating Choice:	SHMC
Coating color	Green
Power Range:	Sph: -3.00 ~-15.00 CYL: 0~ -4.00

Product Features

1.How High-Index Lenses Differ From Regular Lenses?
As the index of refraction increases, the curvature needed to produce a specific correction decreases. The result is a flatter, more attractive, lower volume, thinner lens than was previously possible.
Higher index materials have given patients, especially those with large refractive errors, freedom to choose lens sizes and shapes, as well as frame styles, that were once unavailable to them.
When these high index lens materials are used in aspheric, atoric, or progressive designs and paired with premium lens treatments, the value to you, the patient, expands dramatically.

2.What Refractive Errors Can Single Vision Lenses Correct?
Single vision glasses can correct the most common refractive errors:
①Myopia
Myopia refers to nearsightedness. Objects that are far away can be difficult to see clearly. Single vision distance lenses can help.
②Hyperopia
Hyperopia refers to farsightedness. Objects that are close up can be difficult to see clearly. Single vision reading lenses can help.
③Presbyopia
Presbyopia refers to the loss of near vision due to age. Objects that are close up can be difficult to see clearly. Single vision reading lenses can help.
④Astigmatism
Astigmatism is a condition that makes vision blurry at all distances because of the cornea’s asymmetric curvature. Both single vision reading lenses and single vision distance lenses can help you achieve clear vision.

3. Coating Choice?

As 1.74 high index lens, super hydrophobic coating is the only coating choice for it.
Super hydrophobic coating also name crazil coating, can make the lenses waterproof, antistatic, anti slip and oil resistance.
Generally speaking , super hydrophobic coating can exist 6~12 months.