Dry eye is a common symptom of wearing contact lenses,
and studies have shown that Asians may have more susceptibility.
The SEED Ortho-K lens design presented
by Dr. Hoang boasts a new material make up that gives it oxygen permeability that is “significantly higher than other Ortho-K lenses available on the market.”
Without enough oxygen, our eyes struggle to produce natural tears. What’s more, low oxygen leads to hypoxia which leads to corneal edema.
These are frustrating experiences that could lead a patient to give up on Ortho-K treatment.
“Our material has silicone embedded in strong methyl methacrylate (MMA) molecules, so it maximizes the oxygen transmission while keeping the material high durability,” elaborated the expert.
Citing a 1984 study,2 she elaborated that minimum Dk/t (ionicity and oxygen transmission)
to ensure sufficient oxygen to prevent corneal edema is 75, ลาวสามัคคี
and confidently announced that only SEED’s lens satisfies this criteria.
The composition of the lens also makes it more durable:
While it’s likely none of us have or are planning to ever purposely smash something heavy on top of our contact lenses,
such a test that was carried out on multiple lenses revealed that SEED’s Ortho-K variant was broken with a ball dropped from 150cm while other lenses were destroyed from only 20-30cm.
“This flexibility gives you confidence while washing and handling the lens; also, it provides the safety of lens wear.
I have heard of other Ortho-K lenses breaking inside of patients’ eyes while they were sleeping; this never happens to our lens.
When the lens is broken they have to wait 2-3 weeks while the lens arrives, so their vision gradually goes down
and when the new lens comes it goes up again. This affects the quality of life of your patient during that period.”
For more information: ลาวสามัคคี