There is a diverse range of risk factors for developing eye disease. You are likely familiar with the association between aging, genetics, and eye problems, but did you also know that your ethnic background plays a role in increasing the odds of particular eye diseases?

If you are a member of the Asian community in Markham, ON, what ocular disease should you watch out for? Studies have shown that Asians are at a significantly greater risk for primary angle-closure (acute or narrow-angle) glaucoma. This type of glaucoma happens when the iris blocks the eye’s drainage system (“the trabecular meshwork”), which leads to a build-up of fluid that raises the intraocular pressure. Eventually, the increased pressure damages the optic nerve – thereby affecting your vision.

Does primary angle-closure glaucoma (PACG) cause symptoms?

Glaucoma in general is characterized by an increase in the pressure inside your eye. If the angle closes suddenly, your eye pressure may spike and cause symptoms such as eye pain, headaches, nausea, seeing halos around lights, and blurry vision. PACG is a rarer and more aggressive form of glaucoma, and when left untreated it can cause an irreversible loss of vision.

In fact, this eye disease presently causes 90% of all cases of blindness in China.

The trick is to be aware of your personal risk and use this knowledge to catch glaucoma as early as possible, so your eye doctor can prescribe treatment that can prevent vision loss.

How can you know if you have narrow angles?

Only a comprehensive eye exam can identify the angle of your iris. That’s why it is critical to visit your Markham, ON, eye doctor regularly. The American Academy of Ophthalmology recommends everyone should have a complete dilated eye exam at age 40, in order to establish a baseline for eye health. Depending upon the results of your eye exam, your eye doctor will advise you on how often to return. Once you are 65, you will probably need yearly eye exams.

During your eye exam, our eye doctor will use gonioscopy, which involves using a microscope and a specialized contact lens, to examine the angle. If you are determined to be at high risk for angle-closure glaucoma, your eye doctor may treat your eye with laser peripheral iridotomy, a laser procedure that creates a drainage hole in your iris. This hole prevents the buildup of fluid and prevents an acute angle-closure from happening.

During your eye exam in our Markham, ON, office, we may also perform optic nerve imaging and visual field testing to help diagnose your risk of developing angle-closure glaucoma.

Why is angle-closure glaucoma more common in Asians?

Anatomy is one reason that Asians may be predisposed to PACG. In Asian eyes, the iris attaches to the sclera (whites of the eye) in such a manner that there is an anatomically narrower angle with less of the drainage system exposed.

Myopia – Not a Disease, But Also Common in Asians

Myopia, commonly known as nearsightedness, describes the vision condition of having trouble seeing objects far away. This condition affects more than 80% of Asians. While myopia is not technically an eye disease, it has a major effect on your vision! Fortunately, it is usually corrected efficiently with prescription eyeglasses or contact lenses.

In children, undetected myopia can cause learning problems, and in adults it can lead to headaches and eye fatigue, amongst other troublesome visual symptoms. The risk of nearsightedness is another reason why it’s essential for everyone – kids and their parents – to visit our friendly and qualified eye doctor in Markham, ON, for comprehensive eye exams with vision testing!

Regular exercise is an essential component of overall health and wellness. It is proven that exercise reduces sickness and disease; it increases strength, immunity, and mental health; and it also helps regulate bodily functions and maintain a healthy weight. Research shows that exercise can lower our risk of chronic conditions such as high blood pressure, heart disease, diabetes, diabetic retinopathy and diabetic macular edema, as well as other eye diseases such as glaucoma, cataracts and wet age-related macular degeneration (AMD).

Whereas, a sedentary lifestyle increases the risk of these diseases and of vision loss, studies show that even moderate exercise at least three times a week can improve the prognosis of the above-mentioned chronic illnesses and reduce the risks of developing vision threatening eye diseases.

Inactivity is an even higher risk factor if you have other co-factors for developing eye diseases, including: a family history, previous eye injury or surgery, diabetes, high blood pressure or very high myopia. A combination of healthy lifestyle habits which include regular exercise and a nutritious diet and tending to your mental and emotional well-being can reduce these risks significantly.”

“Regular exercise is an essential component of overall health and wellness.”

Tips for Incorporating Physical Activity Into Your Day

Make it a priority. Schedule your exercise time into your day as if it is a non-negotiable appointment. Find the time of day that works best – for some that is early morning and for others late at night. Work your way up to a half hour at least three times a week.
Be realistic. You don’t need to become a fitness expert to experience the benefits of exercise. Walking, yoga, swimming, even dancing around the house are all options for staying fit. Find a type of exercise that you love so you will enjoy working this habit into your life.
Just move. Find ways to move your body throughout your day. Park your car a little further away from the mall entrance, take the stairs instead of the elevator or walk or bike to work. Remember, every little bit of movement helps.
Find something you enjoy. Often finding the right exercise is a good stress reliever, and reducing stress will also reduce risk of many chronic diseases.
It’s never too late. Exercise for the elderly can be a challenge especially during the cold winter months, when many seniors can’t get out of the house due to the weather. Even walking up and down the stairs in the house or following an exercise video can be helpful to keep from being sedentary.”

Protection & Prevention of Eye Conditions

If you are exercising outdoors or playing contact sports, make sure to protect your eyes with sunglasses or sports safety glasses to ensure your eye health and safety.

Regular exercise can significantly decrease your risks of certain eye conditions but you still have to ensure that you visit your eye doctor for regular exams. Schedule a comprehensive eye exam every year to ensure your vision and your eyes are healthy and to catch any possible problems as early as possible.”

Eye health and disease prevention are just two of the many health and wellness benefits you gift yourself when you make exercise a regular part of your lifestyle. Speak to your doctor if you have any health issues that need to be considered. At any age or level of physical fitness, you can find some form of exercise that works for you.

Call Nan Jiang Optometry on 905-944-9088 in Markham, ON to schedule an eye exam with our optometrist.

FOLLOW US

Alternatively book an appointment online here CLICK FOR AN APPOINTMENT

Local Eye Health in Markham, Ontario

• Markham Eye Doctor
• Local Eye Clinic near you in Markham
• Markham Local Eye Doctor
• Optometrist in Markham
• Eye Exam in Markham

It’s almost back to school time for college students and whether this is your first time away from home or you are already a pro, you want to be prepared with as much knowledge as possible to live safely on your own. This knowledge includes eye and vision safety, as failing to take care of your eyes today could cause damage to your eyes and vision now and in the future. 

So put down your text books for a second and learn these four simple lessons about protecting your precious eyes:

Blue Light Protection

College students spend a LOT of time in front of screens. From each class, homework assignment, and research project, to texting, tinder, netflix and gaming – life is largely digital. This comes with a slew of potential side effects known as computer vision syndrome, including sore and tired eyes, headaches, neck, shoulder and back pain, dry eyes and blurred vision, largely due to the effect of the blue light emitted from the screens. Research shows that blue light can also impact your sleep quality and may possibly be connected to the development of retinal damage and macular degeneration later in life.

There are a few ways to protect your eyes and vision from blue light and computer vision syndrome:

1. Use computer glasses or blue-light blocking coated lenses or contact lenses when working on a screen for long periods of time. These lenses are made to allow optimal visual comfort for the distance and unique pixelation of working on a computer or mobile screen, by reducing glare and eye strain. They also block potentially harmful blue-light radiation from entering your eyes. 
2. Prescription glasses may be considered as well. Many students who never needed glasses previously experience eyestrain with extensive hours studying in university. A minor prescription can make a big difference in reducing eye fatigue and helping to improve concentration.
3. Implement the 20-20-20 rule by taking a break every 20 minutes to look at something 20 feet away for 20 seconds. This allows your eyes to pause from the intensity of the computer screen. 
4. Depending on your environment, eye drops prescribed from the eye doctor may be helpful. Your blink rate often goes down substantially when you are concentrating on reading or computer work, which can cause dry eyes. Using eye drops and remembering to blink frequently can help reduce these uncomfortable symptoms. 
5. Install bluelight filters on your digital devices to reduce the amount of blue light exposure. There are a number of free apps available to download on your phone or computer. 

Proper Contact Lens Use

Many college students opt for contact lenses as they are convenient and great for the appearance, but they come along with responsibility. The busy days and late nights can sometimes make contact lens care difficult so make sure to plan ahead. If you wear contact lenses you need to make sure that you always get them from an authorized lens distributor and that you follow your eye doctor’s instructions for proper care.

Always follow the wearing schedule and never sleep in lenses that are not designed for extended wear. Clean and disinfect as needed, and don’t rinse them with anything other than contact lens solution. Failing to follow the proper use and hygiene for contact lenses can result in irritation, infections and even corneal scarring which can result in vision loss.

One-day disposable lenses can be a great option especially for college students as they offer ultimate convenience (no cleaning and storing) and optimal eye health. 

Further, if you enjoy wearing contact lenses, then remember to get a proper fit from your eye doctor. Many “exclusive” contact lenses available online may actually be poorly fit and made from inferior materials. One size does not fit all.

UV Protection

Ultraviolet rays from the sun are known to cause long term eye damage and lead to vision threatening eye conditions such as macular degeneration and cataracts. Additionally in extreme cases of unprotected UV exposure you can get sunburned eyes, known as photokeratitis, which can cause a gritty, dry feeling, burning, swelling, light sensitivity, vision changes and sometimes serious pain. These symptoms typically go away within a day or two. Wearing 100% UV reflective sunglasses whenever you are outside – rain or shine – is a first step to eye protection. A large brimmed hat to protect the eyes from exposure from the top and sides is also a recommended addition for sunny days.

Get a regular eye exam

To start off college with the right foot forward, it’s recommended to get a comprehensive eye exam prior to the start of the the school year, especially if you haven’t had one recently. This way you can ensure that your eyes and vision are in top shape and, if you wear glasses, that your prescription is still accurate. The last thing you want to worry about when getting adjusted to college is problems with your eyes and vision. 

It’s also recommended for students that are going away to another city to get a recommendation for a local eye doctor in case of an emergency. Most eye doctors know of colleagues located in other cities who they could recommend.

Just remember to think about your eyes because the better you take care of them now, the healthier eyes and vision you will have down the line. 

Conjunctivitis, also called pink eye, is one of the most frequently seen eye diseases, especially in kids. It can be caused by viruses, bacteria or even allergies to pollen, chlorine in swimming pools, and ingredients in cosmetics, or other irritants, which touch the eyes. Some forms of conjunctivitis might be quite transmittable and quickly spread in school and at the office.

Conjunctivitis is seen when the conjunctiva, or thin transparent layer of tissue covering the white part of the eye, becomes inflamed. You can identify conjunctivitis if you notice eye redness, discharge, itching or swollen eyelids and a crusty discharge surrounding the eyes early in the day. Pink eye infections can be divided into three main types: viral, allergic and bacterial conjunctivitis.

The viral type is usually a result of a similar virus to that which produces the recognizable red, watery eyes, sore throat and runny nose of the common cold. The red, itchy, watery eyes caused by viral pink eye are likely to last from a week to two and then will clear up on their own. You may however, be able to reduce some of the discomfort by using soothing drops or compresses. Viral pink eye is transmittable until it is completely cleared up, so in the meantime maintain excellent hygiene, remove eye discharge and try to avoid using communal pillowcases or towels. If your son or daughter has viral conjunctivitis, he or she will have to be kept home from school for three days to a week until symptoms disappear.

A bacterial infection such as Staphylococcus or Streptococcus is usually treated with antibiotic eye drops or cream. One should notice an improvement within just a few days of antibiotic drops, but be sure to adhere to the full prescription dosage to prevent pink eye from recurring.

Allergic pink eye is not contagious. It is usually a result of a known allergy such as hay fever or pet allergies that sets off an allergic reaction in their eyes. First of all, to treat allergic pink eye, you should eliminate the irritant. Use cool compresses and artificial tears to relieve discomfort in mild cases. When the infection is more severe, your eye doctor might prescribe a medication such as an anti-inflammatory or antihistamine. In cases of chronic allergic pink eye, topical steroid eye drops could be used.

Pink eye should always be diagnosed by a qualified eye doctor in order to identify the type and best course of treatment. Never treat yourself! Keep in mind the sooner you begin treatment, the lower chance you have of giving pink eye to loved ones or prolonging your discomfort.

While it may seem like a harmless action, rubbing your eyes can actually cause a lot of damage. There are a number of different reasons that people rub their eyes and for the most part, it does more harm than good. While rubbing your eyes might feel really good in the short term, it’s best to find other ways to get relief from your symptoms. 

Why People Rub Their Eyes

Rubbing your eyes can feel good for a number of reasons. First of all, it can be therapeutic as the pressure can be soothing and can stimulate the vagus nerve, alleviating stress. It can also lubricate your eyes by stimulating the tear ducts and can flush out or remove dirt and particles. 

However, you don’t want to make eye rubbing a habit because there are a number of ways it can cause damage. Let’s take a look at some of the reasons people rub their eyes and some ways to avoid it.

Tired

If you are rubbing your eyes because you are tired, think again. Rubbing your eyes frequently can contribute to bloodshot eyes and dark circles due to the breakage of tiny blood vessels in and around your eyes. If you are already tired, this can add to an even more worn-out appearance.

Itchy

Itchy eyes can be caused by a number of reasons including allergies, inflammation or infections. In any case, rubbing them can often make things worse. For allergies, rubbing the eyes can actually make your eyes more itchy because it can spread more allergens around. Further, there is an inflammatory cascade response that is aggravated by eye rubbing, which can cause the intense fluid swelling and redness often associated with allergies. 

If you have an infection, rubbing your eye can cause more irritation, and often spreads the infection to your other eye, and potentially to the people around you. In fact, that may be how you got that infection to begin with. The hands carry a good amount of germs and bacteria, and your eyes are an easy access point for these germs to enter. Touching something, even as common as a doorknob or towel, which someone else with an eye infection also touched, is a common cause of conjunctivitis and other contagious eye infections. 

Something In Your Eye

If you have something in your eyes, rubbing may seem like the natural response to get it out. However, this can cause the object to scratch your eye and damage the cornea. Rubbing may occasionally push a foreign body deeper into the cornea making it more painful and difficult to remove. 

Dry Eyes

Dry eyes can be temporary, resulting from environmental or physical circumstances, or chronic, due to a condition like blepharitis in which the eye produces a poor quality tear film. If you rub your eyes when they feel dry, it can exacerbate your discomfort and even sometimes cause infection if you don’t wash your hands first. When your eyes don’t have enough tears, they may not flush dirt and germs out as readily as well-lubricated eyes might. 

Other Eye Conditions

Eye rubbing can be especially risky for people with existing eye conditions such as glaucoma, thin cornea and progressive myopia, as it can worsen eyesight. In glaucoma the eye rubbing can lead to an increase in eye pressure which can lead to nerve damage and eventual vision loss. In individuals with a thin cornea, eye rubbing can exacerbate the problem sometimes resulting in a condition called keratoconus which seriously distorts vision.

Alternatives to Eye Rubbing

Eye Wash

Your eyes actually have built-in mechanisms to flush out particles and irritants, but when these don’t work, eye flushing, eye drops or artificial tears might bring relief or remove foreign bodies. If you think you have a foreign body in the eye, first flush the eye with saline, eye wash or water. If you have something stuck in your eye that you can’t flush out, go immediately to an eye doctor. 

Eye Drops or Cool Down

For chronic itching or allergies, speak to your eye doctor as there are remedies such as antihistamines, mast cell stabilizers or even steroid eye drops that can be prescribed to alleviate symptoms. If no prescription eye drops are available when needed, try cooling down by going to a cool area and putting cold water on a paper towel over the eyes for a few minutes. Cooling the eye area will the reduce symptoms as the blood vessels constrict, while heat tends to make the itch worse.

If you have dry eyes there are a number of options available for treatment which include drops or procedures to clear out tear ducts to improve eye moisture. 

Remember, no matter how good it may feel to rub your eyes, there are potential consequences, some of them serious, so next time, think twice!

Migraine Awareness Month:

An ocular migraine is any migraine headache that involves a visual disturbance such as flashes of light, seeing stars or zigzags or the appearance of blind spots in the visual field. Ocular migraines can interfere with your ability to go about your daily tasks such as driving, reading or writing, however, the visual symptoms don’t last long and do go away completely once the migraine has passed. 

What is an Ocular Migraine?

The term ocular migraine may refer to a couple of different conditions. Firstly, migraines with auras often have eye-related symptoms that precede the actual headache. An aura is a physical symptom that is experienced usually within 5 minutes to an hour before a migraine comes on, and can include:

• Blind spots (scotomas) or partial vision loss
• Flashes of light, spots or zigzag patterns
• Visual, auditory (hearing) or olfactory (smell) hallucinations or disruptions
• Tingling or numbness
• Mental fog, trouble finding words and speaking

These types of ocular migraines commonly appear by obstructing a small area of vision which spreads gradually over 5 minutes. 

A second type of ocular migraine is when you actually experience temporary vision loss or disruptions (flashes, blind spots, zigzag lines etc.) during or immediately following the migraine headache. Ocular migraines can also sometimes appear without any head pain at all. They may also be called eye, ophthalmic, or retinal migraines. 

What Causes Ocular Migraines?

Similar to classic migraines, the exact cause of an ocular migraine is unknown. Genetic predisposition seems to be a factor to some extent, and having a family history of migraines does put you at greater risk. 

While they don’t know the cause, experts have seen that spasms in the blood vessels and nerve cells in the retinal lining at the back of the eye are associated with ocular migraine symptoms. 

For some, there are certain environmental triggers, or a combination of factors, that cause migraines. These differ on an individual basis but can include:

• Stress
• Bright lights or loud sounds
• Strong smells
• A sudden or drastic change in weather conditions
• Eating, or exposure to, certain food substances such as, alcohol, caffeine, nitrates, MSG (monosodium glutamate), artificial sweeteners and tyramine. 

Since triggers are different for everyone it’s advised to try to identify yours by keeping a journal to track your environment, diet and lifestyle habits, when you experience a headache. 

Treatment for Ocular Migraines

Treatment for ocular migraines is usually not necessary as the symptoms typically resolve themselves within 30 minutes. It is advised to rest and avoid doing things that require vision and concentration until the headache goes away and the vision symptoms cease. If you are experiencing an ocular headache:

• Lie down in a quiet, dark room when possible
• Massage or apply pressure to the temples and scalp
• Apply a damp towel to the forehead

If you experience auras, taking a migraine medication when the aura occurs, can often reduce the intensity of the headache that follows. In other words, you can use the aura as a warning sign that a headache is coming on and treat it preventatively. Your doctor may prescribe a pain reliever for associated head pain and, if migraines are chronic, a preventative medication may be given. 

It’s important to note that if you are experiencing any unusual visual symptoms or an increase in frequency or duration of symptoms, you should see an eye doctor right away to rule out any serious, vision threatening conditions. Symptoms such as floaters or flashing lights can also be a sign of a retinal tear or hole. 

If you get migraines, among the best ways to prevent them are to keep your mind and body healthy by eating nutritious foods, getting enough rest and managing stress effectively.