Keynote 2: An OK Lens is Not a Myopia Control Lens
Ortho-k is a non-surgical procedure for vision correction option. In addition to the comfort and freedom to not wear contact lenses during the day, OK has proven, as a secondary effect, a high efficacy in reducing myopia progression.
Almost all the OK commercialized worldwide are like original designs released 25 years ago for myopia correction. They had shown a reduction in axial length growth in children of about 50%. However, old designs have a loss in efficacy in lower myopic or younger children.
With the latest research, we know that optimizing the final optics induced on the cornea may improve the efficacy of myopia management. One of the most known modifications is the reduction of the optical zone diameter that may increase from around 50% to 85% the efficacity in slowing down axial length in children, probably by effecting a change in peripheral refraction and optical signals.
To obtain these results, specific parts of the lens must be modified. The ideal final optical shape to induce in the cornea and the curves of the lens to modify will be discussed.
C.V.
Dr Jaume Pané Fabré
Bachelor in Optics and Optometry and Master in Optometry and Vision Sciences by the Faculty of Optics and Optometry of Terrassa (FOOT). Is Fellow of the International Academy of Orthokeratology and Chairman of the European IAO fellowship. He obtained his Ph.D. in Optics and Optometry with the topic «Myopia control with radial refractive gradient contact lenses». He holds the Spaniard National Council of Optics and Optometry Award for his work about «Myopia Control with Contact Lenses» in 1992 and for «A New Contact Lens Overnight Orthokeratology Design for Hyperopia» in 2010. Behalf a Patent on two Orthokeratology lens design, a myopia control lens, and a keratoconus contact lens designs. Currently works as a clinician in the Centro Medico Teknon in Barcelona, Spain, and associate professor for specialty contact lenses at Faculty Optics and Optometry of Terrassa University and associate professor at Universite of Montreal.