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Tag: eye doctor

Posted on by Dr. Elisa Xiao

Recognize the Signs of Macular Degeneration

Photo by FORMAT arw on Unsplash

Macular degeneration is a condition that affects our macula – the spot on our retina responsible for crisp central vision and color vision. As we age, debris can build up in the macula and create deposits known as ‘drusen’. The drusen are the first signs that macular degeneration are present and can cause blurry vision and distortion to one’s vision.

Symptoms to look out for:

  • Visual distortion (straight lines seem bent)
  • Trouble adapting to low light (eg. when entering a dark room)
  • Reduced intensity/ brightness of colors
  • Need for brighter light when reading/working
  • Blurriness of printed words
  • Difficulty recognizing faces
Adapted from: Photo by Senjuti Kundu on Unsplash

Who gets macular degeneration?

This condition is most common in patients over 60 years old. Some other risk factors are those with high blood pressure, family history, smokers, Caucasian patients, cardiovascular disease, and obesity.

How can I prevent macular degeneration?

Maintaining a healthy lifestyle, including diet and exercise is the best way to ensure your eyes stay healthy for as long as possible. The AREDS 2 study has shown that certain vitamins are beneficial in preventing the progression of macular degeneration, however, these vitamins have the best effect in patients who have already began to show signs of macular degeneration.

It is important for everyone to get their eyes examined yearly in order to be able to see as clearly as possible, as well as check for any signs of eye disease or conditions that can affect one’s overall health in addition to the eyes.

Posted on by Dr. Sherman Tung

Blink-A-Boo!

Photo by Taylor Sondgeroth on Unsplash

Blinking is an involuntary reflex which does not require much thought throughout our day. Even though blinking seems simple, it is very important. And believe it or not, there is a correct way to blink.

Why is blinking so important?

  • Protects our eyes from debris and foreign objects
  • Creates a smooth surface for light to enter our eye and land on our retina for clear vision
  • Keeps our eyes moist and spreads tear film evenly

The 20/20/20 Rule

Our blinking pattern can be disrupted throughout the day when we are staring at a screen for too long and doing continuous near work. Optometrists recommend the 20/20/20 rule for everyone, especially those with too much screen time. The 20/20/20 rule means taking a break every 20 minutes to look 20 feet away for 20 seconds.

There is a right way to blink

We want to ensure that when we blink, it is a complete blink. This means that our top eyelid should touch our bottom eyelid. It is very common for people to blink only halfway or not close their eyes completely while asleep. This can be a problem since it exposes the bottom half of our eye and does not allow our tears to be expressed as efficiently. As you may guess, this leads to dry eye symptoms.

Incorporating the 20/20/20 rule and being more conscious about the way we blink can go a long way in helping our eyes feel less dry throughout the day.

Posted on by Dr. Melody Tong

The Silent Thief of Vision – Glaucoma

Photo by Ryoji Iwata on Unsplash

Glaucoma is sometimes referred to as the “Silent Thief of Vision”, and if left untreated, is one of the leading causes of blindness in Canada. Glaucoma is associated with elevated intraocular pressure, which consequently puts strain and pressure on the optic nerve. This excessive pressure will lead to optic nerve tissue damage, which could cause gradual vision loss. The peripheral vision is typically affected first, however could eventually lead to central vision loss if no treatment is initiated.

The increase in intraocular pressure could be the result of two main problems:

  1. There is too much intraocular fluid being produced within the eye, called the aqueous humor
  2. The fluid being produced is not being effectively drained from the eye through the trabecular meshwork

Therefore, initial treatment of glaucoma involves topical medications which work on these two anatomical structures. Surgical intervention could also be warranted to control high pressure within the eye.

The best way to detect and diagnose glaucoma is through annual eye exams with your optometrist. This will allow them to monitor optic nerve health, as well as measure intraocular pressure to ensure stability. It is especially important to be screened for glaucoma if there is a family history of the disease.

Posted on by Dr. Sherman Tung

What’s That Floating In My Vision?

Photo by Al Soot on Unsplash

Many patients are concerned about a constant “black dot” floating in their line of sight. Most tend to notice that it worsens when looking at a blank wall, bright lights, or the sky. Although quite bothersome, it is a very common complaint.

The eye is filled with a gel-like substance called vitreous, which allows the eye to keep its shape. Over time, the proteins within this gel begin to clump up and solidify, leading to formation of “floaters”.

Floaters can occur in one eye or both eyes. Typically, floaters are a benign finding. However, it becomes worrisome when the vitreous is strongly adhered to and pulls on the retinal layers. It could potentially lead to retinal holes, tears, or potentially a retinal detachment. These occurrences could be detrimental to vision, so it is important to see your optometrist immediately if these symptoms arise.

Symptoms to look out for:

  • A sudden increase in the number of floaters
  • Flashes of light
  • Curtain over vision

How are floaters treated?

Unfortunately, there is no way to remove floaters unless you surgically remove the entire vitreous. This procedure has more risks than benefits and it typically not done to treat this condition. The good news is that, with time, the brain gets accustomed to the floaters and is able to ignore them, allowing them to become less bothersome and noticeable.

Posted on by Dr. Elisa Xiao

Is Diabetes Affecting My Eyes?

Photo by Matt C on Unsplash

Did you know that diabetes is one of the most common causes of blindness?

You may be surprised to learn that optometrists can detect diabetes before primary care doctors and before the patient even knows they have it. This is because the eye is the only organ in our body where we can directly see blood vessels without invasive techniques. Since many systemic diseases affect our arteries and veins, the eye is a great way to look into what is happening inside our body.

Photo source: Cleveland Clinic

Diabetes is becoming an epidemic in North America, and it is important to be aware of its effect on ocular health. Once diagnosed with diabetes, it becomes much more important to receive yearly eye exams, to monitor for diabetic retinopathy. This is a condition in which buildup of sugar in the blood causes blockages or damage to blood vessels, resulting in decreased oxygen supply to the eye. To compensate, new blood vessels develop. However, instead of helping, these new blood vessels are weak and leaky, leading to retinal bleeding. Although a diabetic eye exam is very similar to a regular comprehensive exam, there is more emphasis on inspecting the health of the retina and blood vessels.

How will I know if I have diabetic retinopathy?

Symptoms like floaters, blurred or fluctuating vision, dark spots in your vision, and vision loss could be signs of diabetic retinopathy.

Fortunately, there are ways to prevent diabetic retinopathy. Some of these preventions include:

  • Yearly eye exams with your optometrist (even if you think your vision is fine!)
  • Controlling blood sugar, blood pressure, and cholesterol
  • Proper dosage and compliance of medication provided by your Family Physician
  • Engaging in regular daily activity and exercise
  • Eating a balanced and nutritious diet to maintain healthy body weight

Posted on by Dr. Elisa Xiao

Retinitis Pigmentosa

Photo credit: Casey Horner on Unsplash

Retinitis pigmentosa (RP) is an inherited eye disorder that affects the retina – the back of our eyes responsible for capturing light and sending visual signals to the brain. The condition, which is inherited through genetic mutations, can lead to gradual loss of vision as the photoreceptor cells within the retina deteriorate over time. While some individuals may experience slow vision loss over decades, others might face more rapid deterioration.  

Symptoms

One of the most distinctive symptoms of RP is night blindness, where individuals struggle to see in low-light conditions or darkness. As RP progresses, it often causes tunnel vision, a narrowing of the visual field, and can even impact color perception.  

Treatment

No cure currently exists for RP, but researchers are actively exploring possibilities. Gene therapy aims to introduce normal genes into the retina to replace the mutated ones. Another avenue of research is retinal implants, which seeks to restore vision by using electronic devices to stimulate the remaining normal cells.  

Individuals with RP should work closely with eye care professionals to manage their condition. Regular eye exams help track disease progression and determine the best strategies for preserving vision. Additionally, patients can explore low-vision aids and technologies that improve daily life.

Posted on by Dr. Sherman Tung

MiSight Contact Lenses

Myopia, or nearsightedness, is a condition which causes distant objects to appear blurry. It is a particular concern with children, because myopia results in the lengthening of the eyeballs. As children’s eyes continue to grow, so does the progression of myopia. As a result, the retinal tissues gradually stretch, which can increase the risk of eye diseases later in life. Luckily, CooperVision’s MiSight 1 day lenses are an effective and child-friendly solution to managing myopia progression!

Source: CooperVision

How do they work?

The MiSight 1 day lenses are the first soft contact lenses proven to slow down the progression of myopia, through the use of ActivControl technology. When inserted on the eye, the center of the lens improves distance vision by correcting the refractive error and the concentric peripheral rings allow for myopic defocus. This defocusing is what is believed to reduce further lengthening of the eyeball, effectively impeding the progression of myopia. Not only have the MiSight 1 day lenses been clinically proven to slow down the progression of myopia by 59%, they are also comfortable to wear and easy to handle. In a three-year long study conducted on the MiSight 1 day lenses on children ages 8 -15 years, 90% of children reported that they preferred their MiSight 1 day lenses compared to their glasses and 90% of children were able to insert and remove the lenses on their own. Further, 100% of parents stated that their children were happy with their overall experience with the MiSight 1 day lenses, including the comfort, vision, ease of use, and freedom from glasses!

Curious to see if MiSight lenses are right for your children? Book an appointment with Eyelab to chat with one of our doctors. You can also get in touch by calling us at +1 (604) 260-1166 or via email at frontdesk@helloeyelab.com.

Dr. Sherman Tung

Dr. Sherman Tung
OD FAAO FIAOMC

Optometrist | Orthokeratology + Myopia Management
T 6042601166
E drsherman@helloeyelab.com

Posted on by Dr. Sherman Tung

Keratoconus

Photo by Sigmund/ Unsplash

The cornea plays a crucial role in focusing light onto the retina. In individuals with keratoconus, the cornea progressively thins and bulges, taking on a cone-like shape. As a result, vision becomes distorted and blurry, often accompanied by nearsightedness and astigmatism.  

Symptoms

Keratoconus doesn’t appear overnight; rather, it develops gradually, usually during adolescence or early adulthood. As the condition progresses, several symptoms become noticeable:

  1. Blurry and Distorted Vision
  2. Light Sensitivity
  3. Prescription Changes
  4. Halos and Glare
  5. Eye Strain and Headaches

Treatment

Treatment options vary depending on the severity of the condition, but may include

  • Eye glasses
  • Soft contact lenses
  • Rigid Gas Permeable (RGP) lenses
  • Surgical interventions like collagen cross-linking or corneal transplant

If you suspect you have keratoconus or experience any unusual changes in your vision, it’s crucial to consult an eye doctor. Early diagnosis and appropriate management can make a significant difference in preserving your vision and overall well-being.

Posted on by Dr. Melody Tong

Headache or Ocular Migraine?

Photo by New Africa/ Shutterstock

Migraines are often associated with pounding headaches, but they can also affect your vision. Ocular migraines, also known as retinal migraines or visual migraines, are a unique type of migraine that primarily manifests as visual disturbances. This means that the symptoms revolve around your eyes and the way you perceive the world around you. The visual disturbances associated with ocular migraines are short-lived, lasting less than an hour.  

Visual disturbances can include:

  • Flickering lights
  • Shimmering or zigzag lines
  • Temporary blind spots
  • Momentary loss of vision in one eye

Triggers can include:

  • Stress
  • Hormonal fluctuations
  • Specific foods
  • Exposure to bright lights, or even distinct patterns

Although ocular migraines are relatively benign, it’s essential to distinguish them from more serious conditions that can cause similar visual disruptions, such as retinal detachment.

Always seek prompt medical attention if you experience sudden visual changes.

Posted on by Dr. Sherman Tung

Progent – The Diligent Contact Lens Cleaner

Are your ortho-K contact lenses or RGP lenses are starting to get irritating and uncomfortable? Ever feel like there is a foggy blur over your vision? Looking for an easy and effective way to deep clean your lenses? Here at Eyelab, one of our staff’s favourite products is the Progent Lens Cleaner.

How does it work?

Progent cleans lenses by loosening and removing protein deposits that build up on our contact lens over time. It effectively removes surface proteins on all ortho-K contact lenses and RGP lenses without the need for manual rubbing, which may damage the lenses. This product not only improves the comfort of lens-wear, it also helps maintain eye health and prolongs the life of your lenses. Progent deep cleans lenses much more effectively than daily cleaning products.

It comes with two solutions: Progent A (sodium hypochlorite) and Progent B (potassium bromide), which work together in an oxidation-reduction reaction to deep clean surface coatings without the abrasives or mechanical rubbing used in typical cleaning. In just thirty minutes, it effectively disinfects against all organisms that are likely to contaminate lenses, including yeast, mold, bacteria, and viruses.

Source: Menicom.com

At this point, you may be wondering how many complicated steps come with this cleaner? The easy answer is, just mix the A and B solutions, shake, and wait! Simply soak your lenses for 30 minutes – no rubbing required. By using this cleaner every 3 months (or more frequently if needed), your contact lenses can stay polished and well-maintained to better serve your vision.