Ho Optometrist

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

10 Facts about Blindness

Fact 1

Worldwide, 285 million people are visually impaired due to various cases; 39 million of them are blind.

Fact 2

121 million are visually impaired because of uncorrected refractive errors (near-sightedness, far-sightedness or astigmatism). Almost all of them could have normal vision restored with eyeglasses, contact lenses or refractive surgery.

Fact 3

90% of visually impaired people live in low- and middle-income countries.

Fact 4

51% of all blindness is due to age-related cataract, the leading cause of blindness.

Fact 5

Cataract surgery and correction of refractive errors are among the most cost-effective health interventions.

Fact 6

Age-related causes of visual impairment and blindness are increasing, as is blindness due to uncontrolled diabetes.

Fact 7

Up to 80% of all blindness in adults is preventable or treatable. Among children, the major causes of avoidable blindness include cataract, retinopathy of prematurity (ROP), and Vitamin A deficiency.

Fact 8

Blindness caused by infectious diseases is decreasing globally due to public health action. Blinding trachoma affects 40 million people today, compared to 360 million in 1985.

Fact 9

Around 1.4 million children under age 15 are blind. Yet approximately half of all childhood blindness can be avoided by treating diseases early and by correcting abnormalities at birth such as cataract and glaucoma.

Fact 10

For decades, WHO has been working with global partners to eliminate the main causes of avoidable blindness, strengthening country-level efforts by providing technical assistance, monitoring and coordination.

Source: http://www.who.int/features/factfiles/blindness/en/index.html

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How to fit soft contact lenses

Soft contact lens fitting characteristics are essential for a correctly fitting contact lens to give complete corneal coverage with proper centration to avoid the risk of contact lens complication.

Soft contact lens fitting can be assessed in relation to lens movement with:

  • Blinking
  • Upwards and lateral gaze
  • The ‘push-up’ test

This simple ‘push-up’ test is used to assess the speed of recovery when a soft lens is displaced vertically upwards with the eye in primary position (preferably be done by your eye care practitioner). A rapid recovery movement suggests a satisfactory fitting, whereas a slow recovery may be indicative of tightness.

Appearance of a correctly soft contact lens fitting – Diagram (A) shows the limits of acceptable movement and position for soft contact lenses.

Appearance of a tightly soft contact lens fitting – Diagram (B) indicates the lack of movement.

Appearance of a loose soft contact lens fitting – Diagram (C)  shows the excessive mobility of a loose fitting

The general principles for a good fitting are:

  • Good centration.
  • Complete corneal coverage.
  • Approximately 0.5mm of vertical movement on blinking in primary position.
  • Lag of up to 1mm on upwards gaze or lateral eye movements.
  • Rapid recovery on vertical displacement (push-up test).
  • Comfortable in all direction of gaze.
  • Good visual acuity.
  • Vision remains stable on blinking.
  • No irritation.

LOOK GOOD . SEE GOOD . FEEL GOOD

P.S.  A correctly fitted soft contact lens with just 0.5mm to 1mm movement in the eye, is important to ensure long hours wearing comfort and healthier eyes. Please do not take for granted on contact lens fitting!

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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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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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