Lower prescriptions are usually faster, and higher prescriptions take longer. Initially, Ortho K treatment can take several days to 2 weeks to achieve stable, clear vision. This usually improves after the first week and the lenses generally don’t cause any discomfort during sleep. Ortho K lenses are small and can be lost or broken if mishandled, requiring a replacement lens to be ordered in such mishaps.įor the first few days of Ortho K wear there may some eye sensitivity adapting to wearing rigid lenses. However with good hygiene, lens care and regular reviews, the actual risk is still very low (estimated to be around 13 out of 10,000 wearers, per year). With overnight wear of contact lenses, such as Ortho K, there is a theoretically higher risk of adverse events such as corneal infection. Ortho K lens suction plunger is helpful for easy removal of lenses.
Lens removal is easy with the help of a lens suction plunger. This is because Ortho K lenses are smaller and rigid, which means they cannot fold over. Many children find Ortho K lenses easier to insert and remove than soft lenses. In the event that the lenses are not worn for one night most children can still have adequate vision the next day, and some myopia control effect remains, whereas soft lenses work only when the lens is worn. The temporary corneal moulding effect that occurs with Ortho K can last more than a day. In many cases, in the hands of experienced Ortho K practitioners, higher corrections are achievable through the use of special lens designs.įor moderate to high levels of myopia (-3.00 and over)Ortho K is more able to create a large myopia control effect in the peripheral retina. Ortho K can correct a wide range of prescriptions, generally between -1.00 and -6.00 of myopia, and up to -2.00 of astigmatism. With the latest fully-customised Ortho K fitting systems, it is possible to design lenses to optimise the myopia control effect for each child. The lenses are removed in the morning and the child goes about their day and all their activities without anything on their eyes until the lenses are reinserted at bedtime.Įach Ortho K lens is tailored to each eye’s individual shape, curvature and treatment effect required. Ortho K lens wear and treatment takes place at home, at night-time, under parental supervision. As an optical treatment for myopia control, it is considered the ‘gold standard’. Orthokeratology (Ortho K) has been prescribed by specialty contact lens practitioners around the world for over 25 years. Recent 4 year study data of MiSight (myopia control) vs Proclear (single-vision) contact lenses demonstrating effectiveness of MiSight in slowing myopia prescription increase as well as eye elongation increase Why choose Ortho K? Reducing abnormal eye growth and elongation is the goal of myopia control treatment. This is believed to reduce the stimuli for the eye to grow longer. Ortho K and MiSight lenses reduce myopia progression by focusing peripheral light in front of the retina, rather than behind the retina as occurs with regular glasses that only produce a single plane of focus. As with any health treatment, there is individual variability in treatment outcomes - some patients may achieve better than expected results, and others less. Studies show that both Ortho K and MiSight can slow the rate of myopia progression in children by an average of around 50%, compared to wearing single-vision lenses. While Orthokeratology (also called Ortho K) and MiSight lenses are fundamentally very different, they can both achieve similar outcomes.
Similarities between MiSight and Orthokeratology