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.


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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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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