Your eyes deserve close examination

Mention eye diseases and Cataracts are usually the first thing that comes to mind for most people. While it remains the most common cause of blindness in the world (SingHealth), cataracts are not a danger to eye health as its symptoms surface early and treatment via surgery is safe and effective.

However, the same cannot be said for these 3 under-explained major eye conditions that also lead to vision loss:

 

Glaucoma (Open-angle Glaucoma/Tunnel Vision) is a leading cause of irreversible blindness, accounting for 40% of blindness in Singapore and almost 15% of the estimated blind in the world (SingHealth). Dubbed the ‘silent thief of sight’, the danger of glaucoma lies in its lack of symptoms and potential to cause total blindness if left untreated. By the time a patient realises they are losing peripheral vision, the disease would have already reached an advanced state.

While glaucoma risk increases disproportionately with age, due to its strong genetic basis, those with a family history of glaucoma may develop the disease as early as from the age of 20. Glaucoma remains unpreventable and incurable for now but fortunately, its progression can be controlled with early diagnosis and treatment.

Age-Related Macular Degeneration (AMD) is another leading cause of blindness afflicting those over 50 years old. In Singapore, 1 in 4 persons aged 60 and above suffers from AMD (SingHealth) as cells in their macula break down with age. As a chronic irreversible medical condition with no proven preventive medication, early diagnosis is key to improving the effectiveness of treatment and keeping it under control. Unlike Glaucoma, AMD results in loss of vision in the centre of the visual field and can be detected with the help of an Amsler Grid.

Diabetic Retinopathy is the damage to the retina caused by diabetes over time. 80% of people with long-standing diabetes will develop diabetic retinopathy (Singapore Eye Research Institute, 2001). As symptoms do not surface in its early stages, early diagnosis and treatment is crucial to prevent permanent damage to the eye. Doctors will usually check the eyes of diabetics during their annual check-up, allowing this condition to be more well-monitored than the rest.

Go for an eye health examination
In a bid to raise awareness about the importance of regular eye screenings in helping to diagnose eye conditions and prevent vision loss, we will be offering $5 eye health examinations (U.P. $25) throughout the month of April.

Our optometrists will perform a detailed eye exam through a non-invasive OCT (Optical Coherence Tomography) scan that can detect eye conditions before any symptoms surface.

Details
DATE & TIME: 2—30 April 2018, Mon to Fri, 10:30am—7:00pm
ADDRESS: Kwong Shin, 231 Bain Street, Bras Basah Complex, #01-43, S(180231)
PRICE: $5 per screening (approx. 15 mins)

For more information on the eye exam, please email us at contactus@kwongshinoptical.com or call us at +65 6338 6766.

For more information on the definition, prevention, symptoms and treatment of major eye diseases, please read this document provided by SingHealth.

By |March 29th, 2018|Education|0 Comments

Sight Test vs Eye Examination

What is the difference?

Sight tests refer to the process of having your prescription determined by an autorefractor alone. The autorefractor is a machine that estimates your prescription in a matter of seconds when you focus on an image (typically of a hot air balloon or house) at the end of a long road.

Credit: Bryce Wilner

While some may appreciate the efficiency of such a test, it is at most an approximation of refractive error, as the result may be influenced by factors such as eye muscle coordination, eye fixation and alignment, pupil size, corneal or lens irregularities, patient movement and attention, and instrument myopia—the result of the eye’s tendency to over-focus when looking through such a machine. (CAO, n.d.)

In short, automated sight tests should not be relied on solely in determining an individual’s prescription.

An eye examination on the other hand, is performed by an optometrist. He or she is responsible for your eye and vision health, on top of measuring your prescription. This includes tests to detect any asymptomatic eye and health conditions that may not be perceivable to the patient or visible to the naked eye—a process that is crucial to ensuring early detection and prevention of diseases.

Machines may still be used prior to a series of tests to determine your final prescription. However, optometrists are able to draw from their experience, training, as well as interaction with their patients to exercise judgment in deriving a prescription tailored to their individual needs. For example, an optometrist may decide to tune aspects of an elderly patient’s actual prescription when comfort instead of sharpness is their primary concern.

Eye examinations therefore are equivalent to a comprehensive check-up as opposed to a simple temperature reading that is a sight test. We recommend visiting the optometrist at least once every 2-3 years and annually as you get older to ensure optimal vision health and a peace of mind 🙂

By |March 8th, 2018|Education|0 Comments

Spectacle Lenses 101

If terms like ‘high-index’, ‘progressive’ and ‘multi-coat’ always puzzled you, you’re not alone! We’re here to breakdown the eyewear jargon and help you understand the basics of choosing a pair of prescription lenses.

Credit: Oliver Peoples

Material

Plastic lenses are the norm nowadays as they are much lighter (than glass), less brittle and allow for the layering of special coatings (see Coating).

Index

The index of your lenses refer to the thickness of it. Typically, the index is chosen based on your degree or type of frame you choose. As metal frames are slimmer than plastic frames, thicker lenses tend to look more obvious. So in this case, we would recommend opting for higher index lenses.

Type

There are two main types of lenses: single vision or multifocal.

Single vision lenses correct one type of vision problem e.g. looking near or looking far.

Within the category of multifocals, there are bifocal, trifocal and progressive lenses. These lenses provide correct multiple fields of vision best explained in this graphic:

Credit: Pinterest

Single vision lenses are then enhanced by coatings based on the wearer’s lifestyle and needs (see below). Multifocal lenses, especially progressive lenses, similarly come in many variations with new features constantly being developed and released every year. Examples of improved features include wider field of vision, gentler graduations and most recently, lenses that minimise head movements typically required to find focus.

Coating

R&D in recent years has also given rise to a variety of lens enhancements. Some features are exclusive to certain brands while others are offered by multiple brands. The quality/durability of each feature varies according to the manufacturer and here at Kwong Shin, we usually make recommendations based on the feedback we receive from customers who have tried out the lenses themselves.

Starting with the terms that are more easily understood, these coatings are commonly found:

  • Anti-reflective
    a.k.a. multi-coated lenses that reduce reflection on the surface and increase light transmission
  • Scratch resistant
  • Water repellant
  • Smudge resistant
  • UV blocking
  • Dirt repellant
  • Impact resistant
  • Anti-fog
    a.k.a. lenses that are less likely to fog up when moving from a cooler to warmer environment

The following coatings are a little more complex and we have further elaborated:

  • Blue light filter
    a.k.a. lenses that neutralise blue light and reduce digital eye strain
  • Photochromic treatment
    a.k.a. lenses that change colour when exposed to sunlight to reduce glare and protect against UV rays
    Available variations:
    > Extra dark lenses that also change colour when the user is seated in the car, and remains slightly tinted indoors (grey)
    > Standard colours (grey, brown, green)
    > Special colours (amethyst, amber, emerald or sapphire)
  • Digital lens by ZEISS
    a.k.a. lenses designed for people in their 30s and 40s who are experiencing the first signs of presbyopia and require a pair of lenses that will ease them into progressive lenses
  • Office lens
    a.k.a. lenses specifically for near and mid distance reading and computer work
  • Myopia-stabilising
    a.k.a. lenses designed to slow down the rate of myopia progression among children
  • Post contact lens usage (EnergizeMe) by ZEISS
    a.k.a. lenses meant to help contact lens wearers relax tired eyes after a long day and prevent eye strain caused by digital devices
  • Driving lenses
    a.k.a. lenses designed to help drivers cope with difficult light conditions and provide a field of vision best suited for driving

 

And that’s it! We hope this helps you in making a more informed decision the next time you make a pair of glasses 🙂

By |February 7th, 2018|Brands of KS, Education|0 Comments