Vision correction

Spectacles or eye-glasses:

Eyeglasses are an easy and convenient way to correct your vision. There are several different options available in spectacles and they vary in different types of lens designs, lens material, lens coatings, lens options and frames.  

Lens design: there are essentially THREE different types of lens designs:

  • Single vision: These lenses are designed for patients with various types of focussing problems – to see either distance, intermediate or at near distances.  Single vision lenses can be used to correct near-sightedness (myopia), far-sightedness (hyperopia), astigmatism or presbyopia.

  • Bifocal: Bifocal lenses have a correction on the bottom half of the lens for reading and a different correction on the top half of the lens for seeing at a distance.  The disadvantage of this lens design is loss of intermediate vision correction and can result in safety issues.

  • Progressive or multifocal: These lenses are designed to mimic vision by the natural eye making vision clear at near, intermediate and distant ranges along with presbyopia.  This lens design has a smooth transition instead of visible dividing lines between distance and near focal areas. While the invisible transition of progressive lenses may be more aesthetically pleasing, the focal areas are relatively small because more lens space is used for the transitional areas. A modification to the multifocal design is the office/vocational/access lenses – designed for office use.  This lens has the benefit of correcting vision for near and intermediate distances.

Lens materials:  various lens materials may be used.  Commonly, plastic, glass, and polycarbonate materials are used in lenses.  Traditionally spectacle lenses were only made of glass but today, most lenses are made of plastic material.  Plastic lenses are lighter, more flexible and safer than glass lenses because they are less likely to shatter. They also have inherent UV light-blocking ability.

Polycarbonate lenses are recommended for people who need spectacles for sport or other activities that can result in eye injuries. Polycarbonate is highly impacted resistant.  Trivex is a newer plastic material that meets the same safety standards as polycarbonate, but it is less distorting.

Lens coatings:  protective coatings for spectacle lenses are available to help you keep your eyes comfortable. Several different lens coatings are available:

  • Anti-reflective coatings reduce glare. This makes for easier eye contact, prevents eye strain, and improves your appearance. Coated lenses also allow more light to pass through and improve your ability to see small patterns and letters. These coatings are especially helpful for people bothered by the glare of headlights and other lights while driving especially at night.
  • An ultraviolet (UV) coating helps to protect your eyes from the sun’s harmful radiation. This type of coating may not be needed on some types of plastic lenses because they inherently block UV light.
  • Prescription sunglasses also offer UV protection. People who prefer one set of spectacles for both inside and outdoors may benefit from photochromatic lenses. These lenses automatically adjust based on light exposure, with a darker tint in sunlight and a lighter tint indoors. 
  • Blue light filter helps reduce eyestrain and hence controls fatigue during screen-based tasks.  Blue filters reduce the amount of blue light displayed on the screen of devices.  Blue light suppresses the production of melatonin (sleep-inducing hormone).  Hence, using blue light filters promotes better sleep patterns.

Lens options
:  a thin, lightweight, plastic lens called a “high index” lens is another option. These are recommended for people who need high visual correction prescriptions. Because this lens option has a thin profile, the thicker “coke bottle” appearance of the lens is negated.


The optical market has a range of different frames that vary in colors, shapes, sizes, materials, design, etc.  At Specs Sensation you will be spoilt for choice with the expansive range of frames we present to you.  We are able to satisfy your preference which may vary based on price, design, fashion. 

We have spectacle frames that place us competitively in the Optometry market. In addition, we have a large range of different designer frames to suit your personal preferences. 

Our Optometrists and dispensing staff are experienced to advise you in making informed decisions in the selection of frames, lenses, and lens options – to suit your personal preferences and needs.

– Contact lenses: Contact lenses are thin, clear plastic discs you wear on the surface of your eye and like spectacles, they improve your vision. Contact lenses float on the tear film that covers your cornea.  Contact lenses help correct different vision errors like myopia, hyperopia, presbyopia, and astigmatism.

Contact lenses are made from many kinds of materials.  The two most common types of contact lenses are hard and soft.

–  Hard contact lenses: the most common type of hard contact lens is a rigid gas-permeable (RGP) lens. These lenses are usually made from plastic combined with other materials. They hold their shape firmly, yet they let oxygen flow through the lens to your eye.

RGP lenses are especially helpful for people with astigmatism and a condition called keratoconus.  People who have allergies or tend to get protein deposits on their contacts may also prefer RGP lenses.

–  Soft contact lenses: most people choose to wear soft contact lenses as they tend to be more comfortable and have more options available including:

  • Daily wear contacts: you wear these when you are awake and remove them when you go to sleep. Many are disposable, meaning that you wear a new pair of contacts each day.
  • Extended wear contacts. You can wear these while you sleep, but they need to be removed for cleaning at least once a week. They are not normally recommended as they increase the chance of getting a serious eye infection.
  • Toric contacts. These can correct vision for people with astigmatism.  Toric lenses can be for daily or extended wear. 
  • coloured (tinted) contact lenses. Vision-correcting contact lenses can be tinted to enhance or change the colour of your eyes.  You can get them as daily wear, extended wear, and toric lenses.
  • multifocal contact lenses: similar to multifocal spectacles lenses, these contact lenses allow vision correction for all focussing distances and are available in daily or extended wear lenses.

Laser vision correction

Laser vision correction has been the gold standard for surgical vision correction for over 25 years.  Two types of vision correction lasers have become available namely excimer or femtosecond laser. Laser vision correction attempts to correct vision by changing the shape of the cornea.

Laser vision correction involves different techniques namely:

  • PRK
  • LASIK (Laser-assisted in-situ keratomileusis), 
  • SMILE (Small incision lenticule extraction). 

PRK involves applying a laser to the corneal surface, whilst LASIK involves laser under the corneal surface and SMILE involves applying a laser to the inside of the cornea.

PRK is considered first generation laser vision correction. It involves applying an excimer laser to the corneal surface epithelium.  This is the simplest and most economical form of laser vision correction.

LASIK was developed in the early 1990s.  This procedure has the advantage of minimal discomfort and rapid vision recovery in 1-2 days post-procedure. This procedure does come with some pitfalls including dry eye and long-term changes in corneal structural stability.

SMILE is fundamentally a different technique when compared to either PRK or LASIK.  It uses a femtosecond laser for vision correction.  SMILE has the advantage of lack of surgical injury to the different corneal layers.  By avoiding damage to the corneal nerves and surface cells, SMILE is the least invasive option. The femtosecond laser used for SMILE is very accurate and this procedure is comfortable to patients.

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Specs Sensation



We concentrate our care, always focussing on:
• your vision
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• your appearance and
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