Sunglasses - Windhoek Optics

Sunglasses

Shades For All Tastes

Sunglasses help shield your eyes against sun damage. While a pair may complement your style, the lenses remain the most important aspect of sunglasses.

A pair of high-quality sunglasses is essential to give you the necessary protection. When choosing sunglasses, there are several features to consider.

The Fundamentals Of Sunwear

Ultraviolet (UV) Radiation Blockage

You should not compromise on the UV absorption properties of your sunglasses as UV light exposure over time can cause permanent eye damage.
Sunglasses should block 95-100% of UVA and UVB radiation (this may also be indicated by a UV400 label) and at least 70% of visible light.

Tints

Various tints filter light to different degrees.
Popular tints include grey, green, brown, blue, yellow and rose/ purple.
Some tints are better suited to specific settings and activities. Speak to your optometrist about the pros and cons of each tint.

Materials

Crown glass lenses are highly scratch resistant with almost no distortion. However, crown glass is heavier than other materials and more susceptible to breakage.
CR-39 plastic is durable and lightweight and offers excellent optical quality and good impact resistance.
Polycarbonate, a synthetic material, is lighter and more impact resistant than its glass and plastic counterparts, but with less scratch resistance and slightly reduced optical quality. A good choice for active children and those doing potentially eye-hazardous work or sports.

Coatings

Various coatings can improve the functionality of your sunglasses and add specific features.
Common options include anti-reflective coatings that reduce back glare, UV-protection coatings, anti-scratch coatings, mirror coatings best for high-glare conditions and water sheeting ones.

Polarisation

Through light-filtering properties, polarised lenses reduce glare.
Polarised sunglasses make for more comfortable sight when spending extended time outdoors.

Photochromic

These lenses (crown glass or CR-39) tint according to the intensity of UV light, converting them to sunglasses.
They can serve as both prescription glasses and sunglasses in one, and can be worn indoors and out.
They automatically protect against UV radiation, but not all plastic photochromic lenses block 100% UVA and UVB radiation.

Our optometrists can guide you in selecting the appropriate features for traditional or clip-on styles of sunglasses.

Shades For All Tastes

The Fundamentals Of Sunwear

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