WALKING YOU THROUGH THE PROCESS OF ORTHOKERATOLOGY TREATMENT

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INTRODUCTION

This article aims to simulate the actual process of how Orthokeratology works to correct vision and what is to be expected during the treatment and follow-up visits. The vision outcome may differ from case to case, depending on the complexity of each case.

 

WHY ORTHOK

The end goal for ALL our OrthoK patients will be to improve the quality of their lives, to enjoy the many activities in life without the need for day-time spectacles and contact lenses.

For children who are under the age of 18, we aim to minimize the progression of myopia with the use of OrthoK.

For adults, we aim to provide the freedom of spectacles as well as improve the health of your eyes comparing to day-time contact lens wear.

 

THE JOURNEY OF ORTHOK

POWER

This patient’s power of the eye is:

Right Eye: 325 degrees myopia. 25 degrees astigmatism.

Left Eye: 300 degrees myopia. 75 degrees astigmatism.

 

VISION
CORNEAL MAP

This is a topographical map of her cornea. This shows the shape of the eye. Every cornea is like a fingerprint, unique to each individual. The corneal topography machine is a highly accurate equipment used to extrapolate important values of the cornea. The values and other measurements collected in the comprehensive eye examination are used to fully customize the design of the OrthoK lens. Corneal topography is done at every follow-up visit to properly document the progress of the treatment.

corneal-map-1024x348

Right eye topographical map Left eye topographical map

 

CORNEAL HEALTH

This is the picture of the actual cornea. A picture is taken during the first visit to ensure that the cornea is healthy before commencing OrthoK treatment. Pre-existing cornea condition WILL be treated prior to starting OrthoK.

corneal-health-right-left

corneal health right left
1st visit cornea health for the right eye 1st visit cornea health for the left eye

 

ORTHOK LENS FITTING

Before wearing braces, a dentist will need to take a mould of your teeth. Similarly, before starting OrthoK, we will need to take a mould of your cornea. After the mould is taken, we use the software to design a retainer lens for the eye.

This is how a perfectly fitted OrthoK lens looks on the eye. We call this the Bull’s Eye look. It has a centre area of black zone to gently correct the vision, a green ring to accommodate the movement of the eye cells that will migrate while the vision is corrected, another area of black zone to align the lens onto the eye so that it stays in the appropriate location in the eye and a thin green ring at the edge to facilitate tears and oxygen exchange.

OrthoK treatment is similar to a lock and key. There can only be one key to the lock. Similarly, there can only be one lens for each individual eye. This is the reason why all our OrthoK lenses are fully customized for the right fit.

OrthoK-lens-fitting-left-right

OrthoK lens fitting left right
OrthoK lens fitting on the right eye OrthoK lens fitting on the left eye

 

1st NIGHT

OrthoK lenses are worn before going to sleep. The patient will wear the OrthoK lens and return first thing in the morning to assess the results and ensure the eye is healthy.

 

DAY 1 CORNEAL MAP

A map of the eye is taken. This shows us how the OrthoK lens is performing while the eyes are closed during sleep.

In each picture, you will see 3 maps. Take note of the map on the right. The map on the right is the difference between the 1st visit and the current visit. Blue area is the OrthoK treatment zone. It is important to note the position (centre of the eye), smoothness of colour (representing the quality of vision corrected) and size of the blue treatment area.

treatment of right left eye
Treatment map of right eye Treatment map of left eye

In this case, the treatment is in the centre of the eye, the smoothness of the blue treatment area is not very smooth meaning the quality of vision is still not good. Treatment size is about 4.32mm in the right eye and 4.29mm in the left eye.

DAY 1 POWER

Right: 125 degrees myopia. 25 degrees astigmatism.

Left: 150 degrees myopia. 50 degrees astigmatism.

DAY 1 VISION

day-1-vision
DAY 1 CORNEAL HEALTH

Pictures of the cornea health are taken. This shows the cornea 2 hours after the OrthoK lens is removed. Both eyes are healthy. There can be small amounts of cornea irritation during the first few days of treatment due to lens adaptation. Irritation should not be presented after a few days. There should be no pain and symptoms of discomfort after removal.

DAY 1 CORNEAL HEALTH

DAY-1-CORNEAL-HEALTH

Corneal health for the right eye Corneal health for the left eye

DAY 2 CORNEAL MAP

DAY-2-CORNEAL-MAP

Treatment map of right eye Treatment map of left eye

Day 2 maps show that the treatment is in the centre of the eye, the smoothness of the blue treatment area is improving and the quality of vision is getting better but it is still not perfect yet. Treatment size is about 4.21mm in the right eye and 4.15mm in the left eye.

DAY 2 POWER

Right eye: 75 degrees myopia

Left eye: 75 degrees myopia

DAY 2 VISION

Day-2-vision

DAY 2 CORNEAL HEALTH

Both corneas are healthy without scratches or irritation. . Cornea is clear without any signs of irritation. Cornea is healthy and appears to be in the same health as compared to before starting treatment. Shows that the lens is indeed not coming into contact with the eye and is sitting nicely on a bed of tears. No complains of pain and discomfort.

DAY-2-CORNEAL-HEALTH

Corneal health for the right eye Corneal health for the left eye

DAY 3 CORNEAL MAP

Day 3 maps show that the treatment is in the centre of the eye, the smoothness of the blue treatment area is improving and the quality of vision is getting better. Treatment size is about 4.38mm in the right eye and 4.55mm in the left eye.

DAY-3-CORNEAL-MAPTreatment map of right eye Treatment map of left eye

DAY 3 POWER

Right eye: No myopia. 50 degrees astigmatism.

Left eye: No myopia. 50 degrees astigmatism

DAY 3 VISION

Day-3-vision
DAY 3 CORNEAL HEALTH

Cornea is still clear without any irritation or scatches. Reaffirms that lens is a good fit. No complains of pain and discomfort.

DAY-3-CORNEAL-HEALTH
Corneal health for the right eye Corneal health for the left eye

WEEK 1 CORNEAL MAP

WEEK-1-CORNEAL-MAP
Treatment map of right eye Treatment map of left eye

Week 1 maps show that the treatment is in the centre of the eye, the smoothness of the blue treatment area has improved and is now smooth. Quality of vision is great. Treatment size is about 4.91mm in the right eye and 4.99mm in the left eye.

WEEK 1 POWER

Right eye: No myopia. No astigmatism.

Left eye: No myopia. No astigmatism

WEEK 1 VISION

WEEK-1-VISION-281x300

WEEK 1 CORNEAL HEALTH

Healthy looking corneas! Eyes are as good as new!

WEEK-3-CORNEAL-HEALTH
Corneal health for the right eye Corneal health for the left eye

WEEK 3 CORNEAL MAP

WEEK-3-CORNEAL-MAP
Treatment map of right eye Treatment map of left eye

Week 3 maps show that the treatment is in the centre of the eye, the smoothness of the blue treatment area is smooth. Quality of vision is great. Treatment size has increased and is about 5mm in the right eye and 4.99mm in the left eye.

WEEK 3 POWER

Right eye: No myopia. No astigmatism.

Left eye: No myopia. No astigmatism

WEEK 3 VISION

WEEK-3-VISION-281x300

WEEK 3 CORNEAL HEALTH

Healthy looking corneas!

WEEK-3-CORNEAL-HEALTH
Corneal health for the right eye Corneal health for the left eye

WEEK 7 CORNEAL MAP


Treatment map of right eye Treatment map of left eye

Week 3 maps show that the treatment is in the centre of the eye, the smoothness of the blue treatment area is smooth. Quality of vision is great. Treatment size has increased and is about 5.35mm in the right eye and 5.26mm in the left eye.

WEEK 7 POWER

Right eye: No myopia. No astigmatism.

Left eye: No myopia. No astigmatism

WEEK 7 VISION

WEEK-7-VISION-281x300

WEEK 7 CORNEAL HEALTH

Healthy looking corneas!

WEEK-7-CORNEAL-HEALTH
Corneal health for the right eye Corneal health for the left eye

CONCLUSION

OrthoK treatment takes time to stabilize. Power can be reduced significantly in the first 1-7 days but generally takes about 1-2 weeks to stabilize and can vary for different amounts of myopia and astigmatism. As we always tell ALL our patients, our priorities are:

  1. ENSURE HEALTHY EYES – To eliminate the risk of infection. We need the cooperation and compliance of our patients to ensure a safe treatment.
  2. A PROPERLY CENTRED LENS – To ensure good vision outcome, as well as good myopia control for children.
  3. GOOD VISION – This is not to say vision is not important but rather, priorities 1 and 2 are more important and if we achieve 1 and 2, good vision will follow!

Enjoy your OrthoK treatment!

Walking through the vision improvement with Orthokeratology #orthoK #orthokeratology #myopia control #myopia #vision correction #astigmatism #cornea #myopia correction #myopia treatment #singapore #cornea reshaping