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Irregular Cornea Management

(keratoconus, post-lasik, post-trauma and post-graft)

Woman doing eye test
scleral lens and hybrid lens

Welcome to Eyesight Hong Kong Optometry Center, where we offer an all-in-one optometry service. Our team of experienced optometrists is dedicated to providing you with the best possible care. We use state-of-the-art equipment and offer a wide selection of contact lenses to suit your needs. Our optometrists will guide you through the process and help you choose the best contact lenses for your unique needs. Trust us to provide you with professional and personalized advice on your contact lens options. Visit us today to experience our exceptional service.

Our Mission

At our contact lens service, we specialize in fitting specialty lenses that can improve the quality of life for those with complicated prescriptions, irregular corneas, and severe dry eye, as well as those who have undergone LASIK or corneal graft surgery. Our goal is to help people see better and provide vision rehabilitation services through contact lens fitting. If you or a loved one is in need of specialized contact lenses, we would be honored to assist you. Contact us today to schedule a consultation.


"We care about your look and how you look"


Keratoconus contact lenses
Keratoconus - contact lenses classification
Special Prescription Lenses

Special Prescription Lenses

(high myopia, farsightedness, astigmatism and presbyopia)

Keratoconus - contact lenses
Keratoconus - contact lenses
Keratoconus - contact lenses

Welcome to our contact lens service! We offer custom-made contact lenses for individuals with various visual conditions such as high myopia, farsightedness, astigmatism, and presbyopia. Our range of lenses includes soft, rigid, and gas permeable options, all tailored to meet your unique visual needs. Our goal is to provide you with high-quality lenses that improve your vision and enhance your quality of life. Contact us today to schedule an appointment and take the first step towards clear and comfortable vision.

Rigid Gas Permeable (RGP) Contact Lens Benefits and Applications

1. Excellent Vision

(capable to correct -20.00D myopia, -10.00D astigmatism and presbyopia)

  • Automatically corrects most corneal astigmatism

  • Provides excellent optical quality

  • Offers good surface wetting ability with tears

  • Has a wide range of progressive/bifocal lens designs available.

2. Excellent Eye Health

RGP contact lenses provide better oxygen supply to the cornea, approximately 2-3 times more than most hydrogel soft contact lenses. Additionally, RGP lenses have advanced surface wettability, which leads to fewer deposits. This results in better eye health and comfort for the wearer.​

RGP good Keratoconus - contact lenses

3. Easy Handling (wear)

RGP contact lenses offer health advantages due to their small size, which allows for easy handling and better tear exchange, leading to improved debris removal. This can provide a potential health advantage for wearers who want to reduce the risk of eye infections.

4. Durability

Rigid gas permeable (RGP) contact lenses have a longer lifespan compared to soft lenses, meaning they do not need to be replaced as frequently.

5. Easy Cleaning

RGP contact lenses offer a health advantage as they can be easily cleaned and disinfected using simple systems, unlike conventional soft contact lenses.

6. Slow Down Shortsightedness Progression

Gas permeable contact lenses, also known as RGP lenses, offer health benefits for the eyes compared to soft contact lenses. RGP lenses allow for more oxygen to pass through to the cornea, reducing the risk of infections and other complications. Additionally, there are special design RGP lenses such as orthokeratology lenses that have been shown to slow down the progression of myopia (shortsightedness).

**Case examples:​ 

Woman in Grey Sweater

Example 1.:

- Cathy had approximately -12.00D myopia and -3.50 astigmatism in both eyes. She was used to wear soft contact lenses for 10 hours per day. However, she experienced some common problems associated with soft contact lenses, such as unstable vision with blink, dryness and redness.

- Then, she switched to rigid gas permeable contact lenses (GP lens). Now, she's enjoyed stable, clear vision for more than 16 hours of wearing without dryness and redness.

Example 2.:

- Elizabeth is a yoga enthusiast. She had -3.00D myopia and -2.00D astigmatism. She used to use rigid gas permeable lenses since 16 year's old. Her wearing schedule was 14 hours per day, 7 days for week. She enjoyed stable and clear vision without dryness and redness whole days.

- Now, in order to manage age related reading problem, her gas permeable lenses were upgraded with multifocal reading function. She can enjoy clear distant and near vision in both office and home conveniently.

Smiling Middle Aged Woman

**To comply with privacy regulation, the aforementioned case information was modified.

Irregular Cornea Management

Irregular Cornea Management

(keratoconus, post-lasik, post-trauma and post-graft)

Keratoconus - contact lenses
keratoconus rings
kertaoconus topography

When someone has an irregularly shaped cornea, like in the case of keratoconus, post-lasik, post-trauma or post-graft, their vision can be blurry or distorted. This happens because the light that enters the eye is not properly focused on the retina. To address this, specialty contact lenses with a smooth surface can help refocus the light, improve vision and quality of life.

keratoconus and scleral lens

At our center, we offer a range of specialty contact lenses to help improve vision for individuals with irregular corneas. These lenses are a non-surgical option that aims to create a smooth optical surface over the affected cornea to improve vision. Our experienced optometrists will recommend the best type of contact lens based on the severity of the corneal irregularity. We offer a variety of options, including conventional soft lenses, rigid gas permeable lenses, hybrid lenses, and scleral lenses. For individuals with keratoconus, we typically recommend larger contact lenses that can vault and protect the central cornea. The size of the lens will depend on the severity of the corneal cone. Our goal is to find the right fit for each patient to help improve their vision and quality of life.

Keratoconus - contact lenses RGP

Large diameter 10mm Bi-toric RGP for Keratoconus cornea. Tailor made to increase the edge lift.

keratoconus contatct lens options
scleral lenses for irregular cornea

Scleral Lenses for Irregular Cornea:

keratoconus scleral lens
Keratoconus - contact lenses  HK
keratoconus contact lenses

Scleral lenses are a type of contact lens that can help treat many eye conditions that cannot be managed with other therapies [1]. They are made of special oxygen-permeable materials that allow your eyes to breathe. Unlike other contact lenses, scleral lenses rest on the white part of your eye instead of the cornea. This makes them very comfortable and secure.

Scleral lenses can provide relief for people with various eye disorders such as keratoconus [1], post-lasik complications, dry eye syndrome [2-4], Stevens-Johnson Syndrome, Sjogren's Syndrome, pellucid degeneration, chemical and burn injuries to the eye.

The use of scleral lenses has been shown to reduce the need for full-thickness corneal transplantation [5], which is a common treatment for keratoconus and other eye diseases that cause scarring and contact lens intolerance [6,7]. By avoiding corneal scarring caused by traditional small gas permeable lenses, scleral lenses can restore functional vision and delay or prevent the need for corneal transplantation by more than 50%.

If you are interested in learning more about scleral lenses and how they can help improve your vision, you can make an appointment with our experienced optometrists by calling us at Tel:21530008.

Don't settle for just any contact lens fitting assessment. At our center, we take fitting to the next level with corneal-scleral topography sMap3D and optical coherence tomography (OCT). These advanced technologies ensure precise fitting of special contact lenses like scleral lenses. With sMap3D and OCT, we can assess the cornea and contact lens with high accuracy and detail. Don't wait, contact us today at Tel:21530008 to schedule your fitting with our experienced optometrists.

First sMap3D scleral shape scanner in Asia

sMap3D test Keratoconus - contact lenses

Latitude / Contour bespoke scleral lens

sMap3D scleral Keratoconus - contact lenses
keratoconus contact lenses OCT
keratoconus contact lenses OCT

**Case examples:​ 


Example 1.:

- Mr. Cheung had myopia surgeries (RK and LASIK) done for his right eye. The outcome was unsatisfactory, because of optical zone decentration and aberration. His quality of vision and  life was impaired. By use of glasses, his best corrected visual acuity was only 0.4. 

- By use of 16mm scleral lens, the corneal irregularity was masked, his best corrected visual acuity was improved to 1.0.

Example 2.:

- Newly graduated Mr. Lau was suffered from keratoconus for both eyes. His right eye had corneal transplantation done, but the vision was only 0.1. By use of 18mm sclera lens, the corneal irregularity was masked and his vision was improved to 1.0.

- One year later, his left eye had keratoconus progressed. His visual acuity dropped to 0.4. After discussion with ophthalmologist, he decided to postpone the pending corneal transplantation for left eye. Instead, he used 18mm scleral lens on left eye to achieve visual acuity 0.8.

Keratoconus - contact lenses post graft after transplantation

**To comply with privacy regulation, the aforementioned case information was modified.

Hybrid Contact Lenses (HCL) for Irregular Cornea:

(SynergEyes Duette, UltraHealth, ClearKone, Multifocal, Progressive lens)

hybrid lenses for irregular cornea
keratoconus hybird contact lenses
Keratoconus - contact lenses
Keratoconus - contact lenses
Keratoconus - contact lenses  options

There are several types of Synergeyes Hybrid contact lenses (HCL): Duette HD for high astigmatism, Ultrahealth and  ClearKone for keratoconus and irregular cornea.

​Our Synergeyes Hybrid contact lenses are a popular choice for people with high astigmatism, keratoconus, and other irregular cornea conditions. These lenses offer superior visual acuity, stability, centration, and all-day comfort thanks to their patented design that vaults the surface of the cornea. Additionally, the soft fitting system ensures a comfortable fit all day long.

keratoconus hybird contact lenses
keratoconus hybird contact lenses

Dry Eye / Neuropathic Corneal Pain Management

Keratoconus - contact lenses  Hong Kong
dry eye
dry eye
Dry Eye Management

In addition to using traditional eye drops to alleviate dry eye, scleral lenses and eye massage methods have become increasingly popular for managing dry eye in Western countries.

Keratoconus - contact lenses
scleral lenses for dry eye

Scleral lenses for Dry Eye / Neuropathic Corneal Pain:


If you are experiencing severe dry eye, large diameter scleral lenses may be a good option for you. Scleral lenses can help alleviate dry eye symptoms by covering and bathing the cornea in a protective saline solution or artificial tears, which reduces evaporation and promotes healing. This innovative solution can improve vision and comfort for those with irregular cornea and severe dry eye. At our center, our experienced optometrists can advise you on the best course of action for your unique needs. Contact us today to schedule an appointment and take the first step towards finding relief from dry eye.

dry eye scleral lens

Latitude / Contour bespoke scleral lens

sMap3D scleral Keratoconus - contact lenses

**Case example:​ 

scleral lens dry eye
Woman Doctor


- Internist Dr. Chen suffered from severe dry eye associated with immune system disorder. Frequent application of eye drops significantly interrupted her duty in hospital. She experienced photophobia, red eye, foreign body sensation and neuropathic corneal pain, because of wounds on corneal surface.


- She was fitted 14mm semi-scleral lenses in other centre. She experienced irritation and foreign body sensation, because of the small diameter of the lenses.

- Finally, she got 18mm 3D bespoke scleral lenses from our centre. After few hours of wearing, her cornea showed spontaneous healing. She used the 18mm 3D bespoke scleral lenses every day. After one year, she was satisfied with the improvement of her quality of life. She experienced no dry eye symptoms with her scleral lenses  such as photophobia anymore.

**To comply with privacy regulation, the aforementioned case information was modified.

eye massager for dry eye
dry eye MGD

Moist and Comfortable Eye Massager for Dry Eye:

(supportive management for dry eye conditions) 


It is an eye massaging product for tired and dry eyes, which moisturizes dry eyes, alleviates eye fatigue as well as improving and maintaining healthy eyes.

dry eye MGD

- Alleviates eye fatigue by massaging the eye contours and temples.
- An appropriate amount of heat and moisture massage has the effect of cleaning the eyelids and squeezing out the meibomian glands (oil glands) to alleviate eye dryness.
- Use a wet pure cotton pad to supply ample moisture to the eyes.
- You may freely select from various functions (massage, hot and cold massage, massage + heat).

dry eye mask

1. Visser ES, Visser R, van Lier HJ, Otten HM. Modern scleral lenses part I: clinical features. Eye Contact Lens. 2007 Jan;33(1):13-20.
2. Jackson WB. Management of dysfunctional tear syndrome: a Canadian consensus. Can J Ophthalmol. 2009 Aug;44(4):385-94.
3. Jacobs DS, Rosenthal P. Boston scleral lens prosthetic device for treatment of severe dry eye in chronic graft-versus-host disease. Cornea. 2007 Dec;26(10):1195-9.
4. Hanisch KT, Neppert B, Geerling G. Gas permeable scleral lenses as a conservative treatment option for extreme corneal ectasias and severe dry eye. Ophthalmologe. 2005 Apr;102(4):387-92.


6. Deloss KS, Fatteh NH, And Hood CT. Prosthetic replacement of the ocular surface ecosystem (PROSE) scleral device compared to keratoplasty for the treatment of corneal ectasia. Am J Ophthal. 2014;158:974-82.

7. Koppen C, Kreps EO, Anthonissen L, Van Hoey M, Dhubhghail SN, Vermeulen L. Scleral Lenses Reduce the Need for Corneal Transplants in Severe Keratoconus. Am J Ophthal. 2018;185:43-7.

Our Services
Our Optometrists


Our Address

Rm1518, Leighton Centre, 77 Leighton Road,

Causeway Bay, Hong Kong \\ Tel: (852) 21530008 

Service Hours

Monday – Saturday  10:30AM – 07:30PM

Closed on public holiday


Contact Us
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