Orthokeratology (ortho-k) lens has gathered traction in corrective procedures, preferred mainly to correct myopia in children. These lenses are used to recontour cornea. The specially designed lens have emerged as an alternative to vision surgeries and contact lens, the options that are not recommended clinically or not a pragmatic approach. Growing incidence of refractive errors in worldwide population is a key driver foe demand in the ortho-k lens market. A growing percentage of people who have undergone contact lenses fitting operations have adopted ortho-lens, which is a key aspect that echoes the attractiveness of the market.
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A growing body of studies has dealt in making an in-depth assessment of the safety profile and predictability of ortho-k lens in short-sightedness. A sizable chunk of sales in the ortho-k lens have occurred in semi-tropical countries over the past few years. Young adults have become increasingly drawn toward the convenience of using the ortho-k lenses and their supposed effectiveness. However, clinical evidence is inconclusive at large. Nonetheless, the expanding science keeps imparting momentum to lens-induced corneal reshaping.
Overnight Use Gathering Traction
Numerous factors have limited the adoption of products in the ortho-k lens. For one, visual gain is hard to predict due to in poor fitting and risk of microbial keratitis. Semi-tropical environments makes the lenses prone to microbial growth, severely impacting the efficacy in some cases. High incidence of microbial keratitis among wearers has confirmed the conjecture.
In recent years, overnight use of ortho-k lens has gained substantial steam among the users. In some regional studies, such as by the American Academy of Ophthalmology the lens type has been found to be effective for myopia control. For instance, ortho-k lens has been to be effective in correction of astigmatism above 1.75 dioptres and up to 3.50 dioptres. More such studies are needed to confirm the efficacy. On the other hand, new toric designs have come to the fore.
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