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Are your eyes drying out on the road?

10/31/2017

I am lucky that I only drive 30 mins each way on the road to and from work. The last time I heard was that Markham folks drive locally 45 minutes from Buroak to Steeles for work. Let's not to forget about the hockey mom/soccer moms/Chinese class moms that drive their kids to and from different events outside of school and on weekends.

If you found that once you turned on the car heat, and the eyes are starting to bother you, it might be dry eyes. It's usually more common between October and April, when the heat is on for the house and the car.

It's best to ask your local Optometrist for precise treatment for the right tears. As you can see here tears are not just made of liquid.

Dr. Yan L. Liang, OD
Markham Optometrist
www.WardenOptometry.ca
Contact Warden Optometry to book your vision and health consult.

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To what extent does an age realated eye problem go on increasing?

10/30/2017

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I came across this question on Quora, I thought many people would have this question. What do you think?

here are a few events that could occur for our eyes:

presbyopia, people lose the ability to see clearly up close starting at age 40. It helps to use reading glasses from that point on.
dry eyes, your eyes get drier like your skin, not the otherway around. With current lifestyle, being on the computer and iPhone more than 5 hours a day for average Joe, dry eyes are more prevalent and happening in younger ages.
Cataract, the lens inside your eye, like the camera, was clear for 50 years, after 50 years of use and sun damage, it starts to get cloudy. And when it get very cloudy, we call it cataract. It can be removed, and replaced by an implant.
Glaucoma, glaucoma can happen at any age, but angle closure glaucoma can happen around 42 years old or late 40s to early 50s. Due to the lens moving forward, reducing the space for the fluid to drain. Open angle glaucoma can happen from infancy to any older age. It happens in those that has increasing poor drainage in the front of their eyes, or increased eye pressure. This can happen with hereditary disease or by taking medications. The older your eye is, more likely fibers get weaker and lose connection to the back of the brain. Once the connection/signal is broken, it leads to blindness. Open angle glaucoma happens more for people who are more nearsighted too. As their eyeballs are longer, the tissues and nerve fiber layers get stretched out thinner and become weaker.
Floaters and retinal detachement. (I have to add this one after reviewing) I have floaters in my 20s. Some get it in their 40s and onwards. Floater happens as an aging process, but it can happen earlier in those who are near sighted like I am. When there are sudden floaters occuring, it's best to get your eyes check in 24 hours. It can lead to retinal detachement, and blindness.
Diabetic retinopathy, when people have diabetes, the more number of years it’s been around, the more likely diabetes can affect the eyes. It can cause central vision loss with edema, or weakening of new blood vessels call neovascularization. Newer weaker vessels are more likely to bleed and hemorrhage inside the eyes. If the new blood vessel growth signal (VEGF) goes to the front of the eye, the new blood vessels can grow on the iris and the fluid drainage angle, leading to glaucoma in 90 days. Which would bring on blindness in that one eye.
Hypertensive retinopathy, with increasing age, more people are likely to have high blood pressure. The high blood pressure is detected when most blood vessels in the body are 70 percent blocked (due to plaques and calcium deposits on blood vessel walls, they become narrower). That means the blood vessels at the back of the eyes are affected too. It can lead to hardened artery sitting on vein, blocking the vein’s blood movement, and lead to vein being occluded. After a little while, it starts to break and have blood hemorrhaging inside the eyes. If it’s a smaller artery? Only part of the eye blood vessels structure is affected. If it’s a larger artery/vein, central retinal artery/vein? The whole eye could be affected, leading to blindness. The other problem with hypertension in older age is that ocular stroke can occur as well.
Skins on the eye aging. With 50 plus years of sun damage, pyterygium or pinguecula can occur on the conjunctiva or limbus, on the white parts of the eyes, making become yellow, or yellow with blood vessel. It can cover the dark part (pupil) of the eye. Pterygium or pinguecula can be removed, but they can grows back. Sunglasses or wide bream hat is best for protection.
Skins around the eye aging. People spend money to protect their skin. The harder parts to protect are the skins around the eyes. They are more sensitive. Droopy lids, and extra fat can occur around the eye lids as well.
ARMD, age-related macular degeneration. How can I miss ARMD. This affects everyone over the age of 50-60 to some degree. It's caused by sun damage through the pupil, reaching the back of your eye, affecting your central vision. The retinal layers are affected, sometimes distorting vision. This too, can be prevented, or minimized with nutritional diet or supplements.

Best way to prevent eye problems or seek anti-aging eye care would be check with your local optometrist yearly for eye exams, for protection and prevention. Others with contact lens wear would benefit from yearly eye exams as well.

See Link on Quora here.

Dr. Yan L. Liang, OD
Markham Optometrist
www.wardenOptometry.ca
Contact Warden Optometry to book your vision and health consult.

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How to have fun without hurting your eyes on Halloween?

10/27/2017

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Source; Amy Gallant Suillant

Got a devilish look planned for Halloween?
Would it be bright red eyes, or dark makeup this year?

Hear from the expert on how to do them right here!

Dr. Yan L. Liang, OD
Markham Optometrist
www.MarkhamOptometry.com
Contact Warden Optometry to book your vision and health consult.

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How do tears work?

10/25/2017

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source: National Eye Institute

The eye ball near fails to fascinate me.
Check out here on how the different layers of your tears are produced.

Dr. Yan L. Liang, OD
Markham Optometrist
www.MarkhamOptometry.com
Contact Warden Optometry to book your vision and health consult.

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Is there a magic lens for the glare I see at night?

10/17/2017

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Did you hear about getting a magic lens that makes everything better at night? I did too.
It was the blue light blocking lens. At some point, it was the yellow tinted lens.
Both works to some degree. But they are not for everyone.

Why?

Everyone is a little bit different. Let's find out why somebody may experience glare in the first place:

1. Incorrect or outdated prescription.
2. Lens quality. Do you think a lens from a reputable company is better than a lens with a company that has poorer quality control? Consistent quality is what brings consistent good vision with the lens. Distortion has happened in many lenses.
3. Poor lens coating quality. You may have the blue light blocking coating or the anti-glare coating. But just like wine, there are various quality with the same grape too. In this case, it would be the quality of the coating.
4. Poor lens mounting. When the lens is mounted on to the glasses frame. It needed to be centered exactly on pupil center. When it's off or decentered, it's compromising quality and consistency of vision. Read more here.
5. Eye health affected.. In the event of an inflammation or an allergic reaction happening in the eye, you would have more trouble with glare. This increase in glare can also happen with glaucoma, macular degeneration and cataract too.
6. Do you have poor tear layer? Between the cornea of your eye and the outside world is a few layers of tears called a tear film. A poor tear film that breaks apart, with lack of oil or poor tear layers, can cause more glare.

Once the cause of the glare is identified, you are one step closer to reducing glare and seeing better at night or day..

Ask your local Optometrist for clear, comfortable and consistent vision.

Dr. Yan L. Liang, OD
Markham Optometrist
www.MarkhamOptometry.com
Contact Warden Optometry to book your vision and health consult.

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I just got my lenses, why are they not clear?

10/13/2017

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Have you got your glasses made outside an Optometrist office and it didn't seem to work as well?

I had a patient came back from having it made outside. After checking that he still sees perfectly with my prescription in my exam chair, I double checked the glasses he ordered elsewhere. It turned out that it was centered a bit towards to his ear, and a bit too low (See red dot on his lens in above photo). So although he sees well most of the time, it's giving him glare and halos around traffic light at night.

Ideally, the center of the lens could be centered on the pupil center.

Some other cases that it might not work as well would be due to less quality in the lens, and poor quality control. That includes,
1. Different height between centre of the two lenses.
2. Poor lens quality that leads to more distortion in the peripheral.
3. Base curve of the lens are not ideal or not matched for the two eyes.
4. Poor anti-reflection coating or lack of anti-reflection coating.
5. Poor scratch-resistance coating.

Ask your local Optometrist for the best lens quality and service to make sure you are having clear, comfortable and consistent vision with your glasses.

Dr. Yan L. Liang, OD
Markham Optometrist
www.MarkhamOptometry.com
Contact Warden Optometry to book your vision and health consult.

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Are your eyes drying out on the road?

To what extent does an age realated eye problem go on increasing?

How to have fun without hurting your eyes on Halloween?

How do tears work?

Is there a magic lens for the glare I see at night?

I just got my lenses, why are they not clear?

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