Lens selection is one of the key process to ensure an optimal vision correction. Please follow our simple tips below
Selection of lens may involve your preference of lens material, coatings application, tinted lens, colour of the tint and addition of filters. Strength of prescription, purpose of use, affordability, and personal preference are other determining factors of selection. Following information may help you to decide what material to go for.
Lens material
Standard
the standard lens material refers to resin (plastic) lens also called CR 39. This is the most used lens material. These lenses are light weight, more affordable and have a good optical quality. Hindside of CR 39 is that they may easily scratch. The material is not recommended to use during sporting activities as they are less impact resistant.
High index resin
These lenses are thinner than CR39, therefore suitable for strong prescription lenses. Other properties are similar to standard lenses.
Polycarbonate (PC)
Polycarbonate is highly impact resistant, light weight and recommended for sports and safety glasses
Trivex
Trivex is lightweight and has excellent impact resistant. They are also more scratch resistant than any other materials. Trivex can be used for sports & safety spectacles.
Glass
Glass material is less frequently used these days as they are heavier and thicker. They are not recommended for children, high prescription lenses and sporting activities.
Lens Coating
Anti-reflection Coating (ARC)
improves clarity in vision by minimising reflection on the lens surface. These also reduces glare from headlight, computer screen and bright sunlight.
Scratch-resistant coating
a protective hard coating to minimise scratching of lens during everyday use. Remember, no lens is completely ‘scratch-proof’.
UV protection coating
this coating blocks harmful ultraviolet (UV) rays from the sun. UV light is associated with eye conditions such as cataract, macular degeneration and pterygium.
Anti-fog coating
this prevents the lens fogging due to temperature change or humidity
Hydrophobic coating
this coating helps to keep the lens clear by repelling water, oil and dust
Filters
Blue light filter
Blue light from digital device may affect eye. The filter helps to prevent eye exposure to the blue light
Polarising Filter
This coating provides comfort by alleviating glare from reflecting surface such as water, snow and window glasses.
Photochromic Lenses
with photochromic filter gets darker in sunlight. The effect is similar to tinted lens or sunglasses. This is useful for people working outdoors.
We know choosing the right glasses can raise a lot of questions — from sizing and lens options to shipping and returns.
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