Ho Optometrist

Your Local Optometrist from 怡保……Ipoh….. Perak, Malaysia

New estimates of visual impairment and blindness: 2010

Global estimate of the number of people visually impaired.

The magnitude of visual impairment and blindness and their causes have been estimated, globally and by WHO region from recent data. For countries without data estimates were based on newly developed model. Globally the number of people of all ages visually impaired is estimated to be 285 million, of whom 39 million are blind. People 50 years and older are 82% of all blind. The major causes of visual impairment are uncorrected refractive errors (43%) and cataract (33%); the first cause of blindness is cataract (51%). Visual impairment in 2010 is a major global health issue: the preventable causes are as high as 80% of the total global burden.

Ref: Pascolini D, Mariotti SPM. Global estimates of visual impairment: 2010. British Journal Ophthalmology Online First published December 1, 2011 as 10.1136/bjophthalmol-2011-300539.

http://www.who.int/blindness/en/index.html

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Hoya Remark – 抗疲勞鏡片護眼舒適適合長時間使用電腦,閱讀人士.

HOYA Remark獨有的垂直式非球面設計

全方位修正視力

年輕世代  舒適鏡片

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Top Ten Tips for your Children’s Eye Health

1. It is never too soon to take your child for an eye examination, as optometrists can examine children’s eyes even if they are unable to read letters. You should aim to take children for their first eye examination at least by the time they are three years old, especially if there is a family history of wearing glasses.

2. Children should have eye examinations at least once every two years, and more often, as advised by their optometrist, if they have an existing eye condition. Eye tests for children under 16 are free. It is important to know that the eye screening children receive in schools is not as detailed as the eye examination carried out by an optometrist.

3. Always make sure there is plenty of light when your child is doing their homework so they do not strain their eyes to see. An Anglepoise lamp is very useful.

4. Children of any age who are underachieving at school should have an eye examination. Poor vision is very likely to cause problems with reading and writing.

5. If you suspect that your child has a colour vision problem or if there is a family history of colour vision problems then arrange an eye examination with your local optometrist. There is no cure for colour vision deficiency but at least teachers can be made aware of this problem and avoid using certain colours in their teaching.

6. Always protect your child’s sight in the sun. There is increasing evidence to suggest that over-exposure to the sun’s ultraviolet rays (UV) can contribute to the development of cataracts, age-related macular degeneration and ocular melanoma (eye cancer). On average, people receive 50% of their lifetime sun exposure before they are 18 years old.

7. Make sure they eat their greens! Eating certain fruit and vegetables which contain substances called lutein and zeaxanthin could help protect against some eye conditions, in particular cataracts and age-related macular degeneration, the leading cause of blindness in this country. In particular ensure they eat plenty of broccoli, oranges, peas, kiwi fruits, mangoes, sweetcorn, grapes, and of course spinach!

8. If your child is computer crazy or a bookworm ensure they take regular breaks from such close work. Although there is no conclusive evidence to suggest either activity causes visual problems they can certainly lead to tired, red and sore eyes.

9. Children who rub their eyes a lot or who complain of tired eyes and frequent headaches should have an eye examination. Poor vision is a common cause of sore eyes and headaches.

10. When your child is playing certain sports, such as badminton or squash, get them to wear protective goggles so they don’t risk a dangerous eye injury. These can be obtained from your optometrist and can even have a prescription built-in.

Source: http://www.healthyeyes.org.uk/index.php?id=103

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Myopia: It’s Not Just the Length, but the Lens – Review of Optometry (April 15, 2012)

Myopia: It’s Not Just the Length, but the Lens


Myopia is commonly described as having an eyeball that is “too long.” Not exactly. A new study finds that myopia develops in children when the crystalline lens stops adapting to the eye’s continued growth, according researchers at The Ohio State University College of Optometry.

The new research, published in the March issue of Optometry and Vision Science, indicates this breakdown occurs about a year before myopia actually occurs. Lead author Donald Mutti, O.D., Ph.D., and his colleagues found that in children without myopia, the lens grew thinner and flatter to maintain normal vision as the eye grew. But in children who became nearsighted, the lens stopped changing in response to eye growth.

“What this work is trying to show is that it’s not just about the length of the eye—it’s how the length of the eye relates to the rest of the eye,” Dr. Mutti says. “The onset of myopia is really the sudden occurrence of an imbalance between the growth of the eye and the development of the crystalline lens.”

To determine this, the researchers analyzed repeated measurements of vision and eye growth from 732 children ages six to 14. This data was collected over several years for the Collaborative Longitudinal Evaluation of Ethnicity and Refractive Error (CLEERE) study, so they were able to look at the children’s eyes before, during and after the onset of nearsightedness.

They believe that the ciliary muscle, which controls accommodation, may also play a role. While current treatments for myopia target the back of the eye, these findings could suggest a different direction for the future. “If the ciliary muscle is involved in becoming myopic, there might be treatments [developed] aimed at enabling the muscle to respond to increases in the size of the eye,” Dr. Mutti says.

To that end, Melissa Bailey, O.D., Ph.D., one of Dr. Mutti’s colleagues at OSU, is currently conducting studies in which she is imaging the ciliary muscle to find out how it develops in children.

Optometry Mourns Loss Of Irvin Borish, O.D.
“I would like to see more optometrists devoted to and loyal to the field, but dissatisfied with it. In this way they keep the profession moving forward with a combination of loyalty and dissatisfaction.”
In 1999, Review of Optometry acclaimed Irvin Borish, O.D., as “The Most Influential Optometrist of Our Time.” At that time, we wrote, “His Clinical Refraction served as the bible for generations of practitioners. His foresight in the late 1960s fueled optometry’s DPA and TPA movements. And, if you’re a graduate of Indiana University School of Optometry, Dr. Borish has had a direct impact on your life.”

Source:

http://www.revoptom.com/archive/

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Why My Eyes Felt Itchy During and After Contact Lens Wear?

Does your eyes feel itchy when wearing contact lenses?

Felt uncomfortable after contact lens wear?

For those contact lens wearer who share the above conditions, this indicate that the lens you are currently using is in a  ‘dirty‘ condition. Normally, an eversion of contact lens wearers’ upper will show the appearance of numerous papillae.

 

‘Dirty’ condition of the contact lenses, mainly due to  the accumulation of protein depositions, lipids, calcium and mucous from your eyes onto the contact lenses.

Thus, is your duty as a contact lens wearer, to be alert about your eyes condition.

Recommended that, you:

  • Change or upgrade the type or design of contact lens you are using.

  • Switch to daily disposable contact lenses.

  • Alter your lens care regimen to Hydrogen Peroxide System. E.g. AOSept from Ciba Vision or Oxysept from AMO.

  • Improve your ocular hygiene.

For more information, feel free to set an appointment at Ho Optometrist for a full eye assessments.

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What i think about Pasar Malam Contact Lens……

There was a time when the world started to change….. as if the definition of ‘Pretty” for certain human beings tends to go towards a rather unusual way…. Yes… pick a guess…. Bigger Eyes….

It was a time when many internet shoppers gone crazy with all of these so called Korean Bigger contact lenses.

Many of these contact lens which with unclear sources of manufacture ( Some even Posted their License online, but its from Korean Govt… and how true is it?), successfully invaded the market and made their way to many consumers consisting of those young teenagers and even first time contact lens wearers.

It has been dissapointing for the last few months finding out these unknown colour contact lenses setting up their beachhead in major shopping centres as well as pasar malam or night markets nationwide…. Klang Valley.. P.J… Penang…. Ipoh…….and many more….

 Some of many unlicensenced contact lens sellers.

The Fact is Alarming as there are still many people that are not aware about selling contact lenses do require License issued by the Majlis Optik Malaysia, Kementerian Kesihatan Malaysia.

Worse still many more are not aware of the RISKS of getting contact lenses

Without Vision Examination, No Fitting Assessment, No Proper Consultation whatsover…

Sadly, these pasar malam colour contact lenses were sold out just like candies in the convenience shop, and most importantly they were sold in unbelievably low prices…

Some of them even outsmart the consumers by asking them to get free eye test in any optical store for their prescription, while they just follow what prescription consumers provide them…

 

Attracted by these prices and promotions, its terrifying that consumers were unaware that they are jeopardizing their vision and Eye health by wearing these unknown, unapproved by Malaysia Ministry of Health sold by unprofessional, unlicensed seller….

As a licensed eye care practioner and Optometrist, it dissapoints us seeing these Pasar Malam Contact Lens sellers risking the Vision & Sight of consumers..

Therefore, i urge all contact lens users to take care of your eyes, your vision and your eye health.

Go for a proper full eye examinationas well as consultation when you intend to get your new pair of contact lenses, color or not.. bigger or not…

Your Eyes Deserves Better…..

you only got One Pair of Eyes… don’t hope to get one more…..

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戴隱形眼鏡的10個知識!!!

 良好的衛生與配戴習慣是隱形眼鏡使用者能夠舒服配戴和避免產生併發症最重要的工作,凡隱形眼鏡的信仰者必需嚴守以下誡律

 一:絕不配戴隱形眼鏡過夜。雖然目前隱形眼鏡材質的透氧度大為提高,甚至有些隱形眼鏡強調可以持續配戴不用取下。但是睡眠時角膜本已處於相對缺氧狀態,此時配戴隱形眼鏡會增加角膜受損與感染機會。

二:絕不配戴隱形眼鏡游泳。在游泳時使用隱形眼鏡是很容易造成角膜感染的,應使用有度數的蛙鏡來矯正。

 三:絕不用舌頭或唾液來清潔隱形眼鏡。口腔內充滿了各式各樣的細菌,是感染的可能來源。

四:絕不只用水龍頭的水來清洗隱形眼鏡。國內自來水多半達不到生飲標準,水中也有可能含有致病細菌,用自來水清洗是相當危險的,最好使用生理食鹽水。

 

五:不要隨意使用他人的隱形眼鏡。即使兩人的度數相近,但是角膜弧度可能大不相同,不合適的眼鏡可能造成角膜傷害。且共用隱形眼鏡就像共用牙刷一樣,是很不衛生且有可能感染疾病的。

 

六誡:在配戴隱形眼鏡之前不要使用含有乳霜的香皂洗手。因為乳霜會殘存在您的手上污染眼鏡。

七:不要在配戴隱形眼鏡時使用眼藥水。幾乎所有的藥水都含有防腐劑,藥水成分與防腐劑可能破壞鏡片材質,且隱形眼鏡吸附的藥品可能造成眼睛毒性。

 

八:不要在眼睛不適時配戴隱形眼鏡。如配戴時發生不適,請立即取下,切莫遲疑。

九:不要在駕車時使用角膜變色片。這種以美容裝飾為目的的鏡片,因為上面有各種圖案及染色,會降低眼睛的對比敏感度,不宜在駕車時使用。

 

十:配戴隱形眼鏡發生問題時不要諱疾忌醫。有些感染症是會導致失明的,儘速就醫才是最聰明的選擇。

原文網址: 【生活智慧】戴隱形眼鏡的10個知識 | 生活新聞 | 社交剪報 http://appnews.fanswong.com/?function=readnews&nid=85287#ixzz1sq14raY6

Prepared by Deric Ho

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Headache, neck pain, blurry eyes after Computer use?? READ THIS…

Computer vision syndrome (CVS) is a temporary condition resulting from focusing the eyes on a computer displayfor protracted, uninterrupted periods of time.

Some symptoms of CVS includes:

    • Headaches,
    • Blurred vision,
    • Neck pain,
    • Redness in the eyes,
    • Fatigue,
    • Eye strain,
    • Dry,
    • Irritated eyes,
    • Double vision,
    • Polyopia,
    • and difficulty refocusing the eyes.

These symptoms can be further aggravated by improper lighting conditions (ie. bright overhead lighting or glare) or air moving past the eyes (e.g. overhead vents, direct air from a fan).

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Color Blind Test…… Do u see color?

Color Blind Testing:

This is a test for colour blindness or to use a better but less common term, colour vision deficiency. Most so-called “colour blind” individuals are not truly colour blind but instead have abnormal colour vision. They only have problems distinguishing certain colours and shades of the same colour. They do not see only in black and white. True inability to distinguish any colours is actually rare.

Understanding more about color blindness

It is estimated that eight percent of males and fewer than 1 percent (about 1 in 200) of females are colour deficient. Most people suffering from colour blindness are born with the condition. They inherit the condition from their parents as an ‘X-linked trait’. This means that the gene causing the condition is located on the X sex chromosome. Males have an X and a Y sex chromosome, while females have a pair of X sex chromosomes.

How color blindness is inherited from a mother with a recessive mutated X chromosome
Genetically, this means
  1. Males are predominantly affected.
  2. Females are not predominantly affected but are carriers of the defective genes. Carriers carry the gene and can pass it on to half their sons. Half their daughters can be carriers. Carriers themselves are not affected by the defect.
  3. If the father is colour blind, all his daughters will be female carriers of the defective genes. All his sons will be spared.
  4. If the mother is colour blind, all her sons will be affected and all her daughters will be female carriers.

Green colour weakness or blindness is most common, followed by red colour weakness or blindness. It is important to remember that not all cases of colour blindness are congenital as there are some diseases acquired later in life, like diabetic eye disease, glaucoma, retinal or optic nerve disease which may disrupt colour vision.

Color Blindness from Diseases

There are a number of inherited diseases that can lead to color blindness, fortunately they are quite rare but are all eye specific illnesses, they include:

  • Cone Dystrophy
  • Cone-rod Dystrophy
  • Achromatopsia
  • Blue cone monochromatism
  • Retinitis pigmentosa
  • Macular Degeneration
  • Retinoblastoma
  • Leber’s congenital amaurosis

There are some additional, better known chronic illnesses that are said to sometimes cause color blindness. Whether or not these illnesses can cause someone to become color blind is of questionable validity as there are very few documented cases. The list includes:

  • Alzheimer’s disease
  • Diabetes mellitus
  • Glaucoma
  • Leukemia
  • Liver disease
  • Multiple sclerosis
  • Parkinson’s Disease
  • Sickle cell anemia
  • chronic alcoholism

The importance of color vision testing

It is important to know if you are colour blind. Colour is often used as an aid to teaching in pre-primary and primary schools. Children who have difficulty distinguishing between colours may be misdiagnosed as having learning difficulties unless it is known beforehand that they have a colour vision defect. Knowing the existence of a colour vision defect early can thus help prevent communication problems in school and in later adult life.

Schoolchildren with colour vision defect should think over carefully before choosing study subjects where colour discrimination is important. Art and chemistry are two examples of such subjects.

Consider colour deficiencies when making career decision. This is because many occupations demand good colour discrimination. Defective colour vision is a handicap in some pharmacy and chemistry jobs. Colour is often used to convey important information such as in traffic and navigational lights and colour coding of electrical wires.

How we see color

Our eyes are capable of differentiating an infinite array of colours. Yet, would you believe that all our colour sensations are actually derived from varying stimulation of only three types of colour receptors, namely red, green and blue?

These receptors, called cones, are found solely in the centre part of the retina in an area called the macula. The retina is the nerve layer lining the back of the eye, much like the film in a camera.

The colours red, green and blue are also known as the primary colours. A suitable mixture of these three colours can produce any colour including white!

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Did You Know? – Glaucoma

Did You Know?
Did you know that you could be going blind and not even know it? That’s what glaucoma does. It sneaks up on you gradually. Glaucoma is one of the leading causes of blindness in the world. It affects 60.5 million people today and is set to reach 79.6 million by 2020.

If you have a family history of glaucoma, you’re at high risk. Glaucoma can’t be cured, but it can be controlled and the risk of blindness reduced-if glaucoma is detected and treated in time.

Get your eyes examined. Don’t lose sight of glaucoma.

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