Vision Health & Vision Care

Is there a need for a regular eye examination?

As we age, our eyesight deteriorates and our eyes are more susceptible to diseases. Regular eye examinations are essential for early diagnosis of disease, allowing timely treatment. Some diseases have no symptoms in their early stages and they might be harder to treat at a later stage. It is also important for children and teenagers (age 3 to 19) to go for routine eye examination (every 1 to 2 years) for early detection of Myopia problem or other eye diseases. Regular eye examination safeguards you and your family from serious vision problems.

How often do I need to get my prescription changed?

There is no predetermined schedule for changing spectacles or contact lenses. It is necessary to change your prescription only when it no longer provides adequate correction. Regular eye examination is highly recommended.

I spend long hours on my computer and smartphone, how is this affecting my eyesight?

Digital eye strain due to prolonged use of electronic devices affects your eye health. To avoid eye strain and reduce exposure to the harmful blue light emitted from digital devices, make sure you wear a pair of properly prescribed spectacles for the task.  Take frequent breaks from computer work which require long visual tasks. As technology advances, there comes vision protection products addressing the problem. Please consult your eye care professional for personalized advice.

What are Ultraviolet (UV) rays and what damage can they cause to the eyes?

Ultraviolet (UV) rays are emitted by the sun in three forms: UVA, UVB and UVC. While UVC is absorbed by the earth’s atmosphere, UVB radiation is only partially blocked, and UVA radiation is not blocked at all and can burn the skin and eyes, as stated by the World Health Organization.

According to a survey by The Vision Council, the American adults reported the following symptoms after prolonged UV exposure: irritation in the eye; trouble seeing; wrinkles around the eyes; red or swollen eyes; sunburn of the eyelids and eye; and, in some cases, cancer on or around the eyes.

The Vision Council encourages everyone to wear UV-protective eyewear whenever they’re outdoors during daylight hours, no matter the season or weather, as UV rays are always present. Adults and children should have a comprehensive annual eye exam, as an eyecare provider can make recommendations regarding UV-protective eyewear tailored to an individual’s vision and lifestyle needs.


Can I use my spectacles prescription to buy over-the-counter contact lenses?

Your spectacles prescription does not provide the specifications for lens diameter, thickness and base curve. Hence, you can’t use it to purchase contact lenses.  Do visit your eyecare professional for a properly fitted pair of contact lenses.

Online Purchase

Is it secure to purchase on your website?

Our web store is secured with SSL certificates. This means the information you input is encrypted and it will not be available for third parties.

Do I get the same product warranty and after sales services similar to in-store purchase?

Yes, you will receive the same comprehensive product warranty and after sales services similar to in-store purchases.

Is online pricing similar to in-store?

Yes, it is. However, delivery charges will be incurred for online purchases.

Is online promotion valid for in-store purchases or vice-versa?

Promotion can be online or in-store only promotion.  We may have storewide promotion (valid both online and in-store) from time to time.

Do you offer a volume discount for online purchases?

Yes, kindly contact us through our live chat function or call any of our outlets for assistance.

How can I track my shipment?

Upon placing your order, a QR Code will be sent to the respective email address you used to place the order. With this QR Code, you will be able to track the status of your shipment.

How long does it take to receive my order?

In-stock products will take approximately three working days. However, if the stock is unavailable at the time of your purchase, an estimated waiting time will be given to you via your email address.

Do you ship outside of Singapore and how can I make the purchase online?

Yes, we do! Simply place your order through our website. However, do note that any dutiable tax is to be borne by the buyer himself.

How much is the shipping cost?

For local orders, shipping charges are free for goods under 5kg.

For international orders, shipping charges vary across countries and weight.

What is your return policy?

Should you require to return any of your products based on acceptable reasons, it must be done within three days upon receival of products, subjected to OJO, KAI JOO team’s inspection. For frames and sunglasses, no scratches or deformities should be seen. For contact lens, the box must not be dent and it should still be intact, unopened, with no markings/ writings on the boxes.

Only if the above requirements are met, will OJO, KAI JOO consider giving out in-store credits.

Can I cancel my order after completing the online transaction?

You may only cancel your order if shipping is yet to be processed.

How to contact the customer service if I need help on my online purchase?

Kindly use our live chat function to reach us! We’ll be happy to help.

Contact Lenses

I'm interested in wearing contact lenses. How long does it take to get used to them?

It depends on the type of contact lenses you choose. Most people adapt to soft contact lenses fast. If you choose rigid gas permeable contact lenses (RGP or GP contacts lenses), it might take longer for your eyes to fully adapt to the lenses.

Can children wear contact lenses?

Successful lens wear depends more on maturity, responsibility, personal hygiene and attitude than age.Children can be fitted with contact lenses but that depends on how responsible the child is.We recommend you consult the eye care professional to determine your child’s suitability.

Can contact lenses actually slow down or control nearsightedness/myopia?

A number of studies have shown that overnight Orthokeratology (Ortho-K) lenses help to slow down or control myopia progression. If you are interested, please consult an eye care professional offering the service.

Are contact lenses difficult to care for?

Different types of contact lenses require different steps of care and maintenance to ensure your eyes stay healthy and your contact lenses last within the recommended wearing period. For the exact care of your contact lenses, please consult your eye care professional for personalized advice.

Daily disposable contact lenses are the more hygienic and hassle-free option – lenses that are discarded every time they’re removed.With these, you throw them out when you’re done wearing, so there is minimal care regimen required.

Is it common that eye infections are associated with contact lens wear?

Eye infections are most commonly related to bad contact lens habits, poor hygiene and lens care-related issues. While such health problems can occur, they are not common.  It is important that you follow your eye care professional’s instructions for proper lens wear and care.

Are daily disposable contact lenses worth the extra money?

Many eye care practitioners highly recommend daily disposable contact lenses. It is an excellent choice health-wise as lenses are discarded every time they’re removed. It is also hassle free, as you don’t need to buy contact lens solutions to clean and disinfect them after each use.

Is it safe to buy contact lenses online?

While it is easy and attractive to buy cheap contact lenses online with the convenience of having them delivered directly to you, the risks are high if you buy from dubious or unknown sources.  Buying and using these unreliable contact lenses can lead to eye infections, corneal ulcers, or even blindness.

It is important for you to consult an optometrist/eye care professional.  In Singapore, the Optometrists and Opticians Board (OOB) under the Ministry of Health requires all contact lenses (powered or non-powered) to be prescribed and dispensed by registered optometrists or contact lens practitioners. Contact lenses with refractive power, which are classified as medical devices, must be registered with HSA.

Do buy your contact lenses from reputable manufacturers and optical outlets.  These manufacturers must comply with strict processes and conditions to ensure the safety and quality of their products, hence, the safety for your eye health.

Is beauty/cosmetic/color contact lens harmful to the eyes?

It is important to purchase the beauty/cosmetic/color contact lenses from reputable manufacturers/brands/optical outlets.  You must not compromise your eye health and safety when purchasing beauty/color lenses.

Often, it is attractive to buy cheap beauty/cosmetic/color contact lenses online. Buying and using these unreliable contact lenses from dubious or unknown sources heighten the risks of avoidable eye infections, corneal ulcers, or even blindness.

Is it safe to sleep with my contact lenses?

Sleeping with contact lenses is dangerous because it drastically increases your risk of eye infection.However, Orthokeratology (Ortho-K) is an exception, as these lenses are designed specifically for wearing while you are asleep.

Can I wear contact lenses after Lasik?

If there is a need for you to wear contact lenses after Lasik, you should generally be able to do so if you had worn contact lenses comfortably prior to the surgery. Similar to initial lens use, you will go through the adjustment period for extended lens wearing period.  Do consult your eye care professional for personalized advice.


Who is suitable for Ortho-K lenses?

It is generally suitable for most Myopia patients (with or without mild astigmatism), and those with lesser degrees of Astigmatism, farsightedness and presbyopia. A comprehensive eye check will be conducted to determine suitability based on the wearer’s refractive correction (degree) and the shape of his/her cornea.

What is the optimal age for Ortho-K treatment?

We would recommend the treatment for patients no younger than 7 years, as it is important for the wearer to comply with the steps and procedures required. Parental supervision is recommended for lens application, removal and care for children age 12 and below.

Is Ortho-K lens safe for both adults and children?

Good lens care practices are of the utmost importance. Use only approved contact lens care products and attend check-up appointments punctually, as scheduled. Wearers will be briefed on the proper lens care and handling procedures while health checks for eyes and cornea will be conducted on a regular basis to mitigate risks.

Is it dangerous to wear the lenses to sleep?

Ortho-K lenses are specially designed gas permeable lenses which provide much higher levels of oxygen permeability. It is specially designed for patients to wear at night while sleeping, allowing healthy oxygen exchange in a closed eyes condition, hence making it more “breathable” as compared to the daytime contact lenses.

Will spectacles be needed during the treatment?

Spectacles will not be needed once the treatment effect has stabilised (it usually takes about 7 – 10 days).
However, it would be advisable to keep a spare pair for unforeseen circumstances (e.g., a young patient fell sick and is not able to put on Ortho-K lenses for several nights).

How long does the patient need to wear Ortho-K lenses?

Ortho-K is a treatment process, often likened to dental braces. It requires multiple visits and the patient will need to wear the lenses every night for optimal results. The corrective effect is stable but not permanent. Myopia condition will return, back to its former vision, once the patient discontinues treatment.

Who is recommended for this treatment?

A child experiencing drastic myopia increment (-0.75 sph/year) or patients participating in contact sports/activities which might be limited by spectacles or daytime contact lenses.

Can the wearer see clearly if he/she wakes up in the middle of the night?

Yes, the wearer’s vision will be clear while wearing the lenses.

Are there any side effects if the patient decided to discontinue Ortho-K treatment?

There are no side effects. The treatment can be discontinued at any time. Losing the hold and support from the lenses, the cornea will slowly lose its adjusted shape and return to its former vision.

Are Ortho-K lenses suitable for adults?

Yes, adults obtain the same benefits from Ortho-K treatment – clear vision without the burden of spectacles or daytime contact lenses. Although the treatment is reversible once discontinued, unlike Lasik, the cornea integrity is not disrupted.

How long can a pair of Ortho-K lenses last?

For about 12-18 months – if the lenses’ shape change exceeds a certain limit or when the lenses have accumulated too much protein or lipid deposits – a new pair will be recommended. Wear and tear, as well as deposits build up will occur after a prolonged period of wear. These changes are not visible to the naked eyes. Hence, a change of lenses is recommended at least every 18 months. The optometrist may recommend a more frequent change, depending on the condition of the lenses.

Presbyopia Management, “Lao Hua”

I have difficulty reading/seeing near vision objects clearly. What is happening?

Consult your eye care professional whenever you experience vision changes.  If you are over 40, there is a good chance that such near vision loss is the result of age-related eyesight condition, known as presbyopia or what is commonly known as “Lao Hua”.  Near vision loss can even affect those in their late 30s.

I had Lasik many years ago. Recently, I am struggling to see near vision objects and reading books clearly. Does the Lasik ‘wear off’ and do I need another Lasik surgery?

Lasik does not prevent presbyopia from happening as we age.It is common for people who had Lasik earlier in life to develop the need for reading spectacles in their 40s.

Are there any options other than reading spectacles?

There are different types of reading spectacles for your selection. You may also opt for contact lenses or surgery. Consult your eye care professional to discuss the option best suited based on your needs.

If my near vision is progressively deteriorating, will I go blind eventually?

Presbyopia can interfere with your vision and your daily routine, but it will not cause blindness.

Can presbyopia be reversed?

No, presbyopia cannot be reversed but your eye care professional will be able to help you correct it easily.

What happens if presbyopia is not treated?

Presbyopia is a degenerative eye condition, so the quality of your up-close reading vision will deteriorate with time. If untreated, your up-close reading tasks become difficult, and you’re at risk of headaches and eyestrain.

Office Lens

What is an office lens for spectacles?

Office lens is a computer progressive lens, designed for use in the office or at home.It is intended to provide clear vision for close to intermediate tasks such as computer-work, reading and writing.Office progressive lenses help bridge the gap between reading and distance with a prescription that’s specifically built for screen time — desktop computers, laptops, tablets, smartphones, and anything else in the middle distance.

Can I use my office lens for distance tasks?

No, you can’t.Office lenses are limited to a maximum intermediate distance of about 4 meters.Hence, you won’t be able to focus on anything beyond this distance, which makes the lenses completely not suitable for distance tasks like driving.

Why can't I read my computer well with the progressive lenses?

With the progressive lenses, you may still experience discomfort while using the computer.Even though these lenses provide an intermediate or computer zone, it is a very narrow portion of the lens, hence the limitation.Speak to your eye care professional if you are a heavy user of the computer.

Why should I get the office lens?

If you use the computer for more than four hours per day, office lens is ideal:

  • Enjoy clearer reading and computer vision
  • Helps to alleviate visual fatigue, or computer vision syndrome and you can work in comfort.
  • Cut down on neck and back strain to improve posture
  • Option to add anti-blue light lens coating on your lenses which helps to reduce eye-strain experienced from long durations of screen-work

Hearing Aid

How do I know if I need hearing aid(s)?

Hearing loss usually happens gradually and may not be detected easily. However, it can be detected when it starts affecting your daily life such as having difficulty to hear and understand during conversation or over the phone, being told you turn on the TV or digital devices’ volume for too loud or that recently your speech gets louder than usual, etc. It is advisable to get tested, as early detection and treatment can help improve communication and potentially the quality of life.

Can hearing aid cure hearing loss?

Hearing aid helps you to hear better and clearer but it cannot cure your hearing loss. It also does not intervene or prevent the progression of hearing loss over time.

How long does it take to get used to wearing hearing aids?

Hearing loss patients were used to muted and muffled sounds. Hence, it is common for them to be overwhelmed by “loud” sounds when they start wearing hearing aids. The adjustment period varies for each individual. It may range from a few days to a few months. During this time, you can rely on OJO, KAI JOO to help you set realistic expectations and journey with you to learn to hear again.

How long can hearing aids last?

Hearing aids are not just functional, they are durable. With proper care, they can usually last up to 5 years. Some hearing aids can last for more than 5 years while others may need a tune-up or repairs.

The brand and hearing aids we carry.

Formed in 2019 through the merger of Sivantos and Widex, WS Audiology combines more than 140 years of experience and expertise. Rexton, a brand under the company’s wings, has been delivering proven hearing technology in the most reliable way. They understand what reliability means in real life, and make practical, easy-to-use products you can count on.

Today’s digital instruments from Rexton are computer programmed to selectively amplify sounds based on each individual’s hearing needs. There are innovations specifically designed to minimize background noise, improve speech clarity, reduce feedback whistling, and even learn what volume settings a wearer prefers. Most hearing aids today contain technology that does not require wearers to adjust them, but rather they can assess the situations and adjust themselves automatically. Some are even rechargeable so there’s no daily fuss with tiny batteries.

Will others notice my hearing aids?

The advancement in technology has enabled today’s hearing aids to be significantly smaller and more discreet. Some are virtually invisible while others boast elegant design and fashion colors. They will be your life-changing instruments we liken to a pair of spectacles. While your eyes enable you to see the world, your hearing allows melodies into your world.