Nearsightedness (myopia) is a global epidemic today. In large part because of the excess hours of screen time that humans spend today compared to previous generations. Myopia can be corrected easily with contact lenses however, to slow down the progression of myopia you need special lenses designed to treat this condition so as to avoid serious complications later.
The worldwide prevalence of myopia has increased at a staggering rate the last decade in part because of the widespread use of handheld devices commonly used from a young age. Currently about one third of the global population is nearsighted. This trend is expected to expand half the population by 2050.
Patients over 40 will start to notice their close vision deteriorate gradually until they eventually cannot read small print or view their phone. While some may initially try using eyeglasses with bifocals, trifocals or reading lenses, these glasses will inevitably induce new visual disturbances and inconveniences that can be easily eliminated with modern multi-focal contact lenses. Even just 5 to 10 years ago, there were limited contact lens options for people with presbyopia. Today, there are exciting breakthroughs that create new possibilities in lifestyle and visual comfort without having to resort to wearing cumbersome and expensive eyeglasses.
RADIAL KERATOTOMY (RK)
Radial Keratotomy (RK) was the first refractive surgical procedure introduced in North America. It became very popular and millions of patients had this procedure done to correct their vision. Small but deep incisions were made in the cornea in a radial, or wheel-spoke pattern. The resulting scarring reshaped the cornea, thereby refocusing light in the eye. However, the long-term results were disappointing and many of these patients had to undergo Lasik or even corneal transplant to correct the problems caused by RK.
The corneal scarring and distortions caused by these procedures left many patients unable to wear glasses or conventional contact lenses. Thanks to recent advancements in lens materials and manufacturing technology, there are custom scleral lenses available that can correct this problem and restore normal vision once again.
Keratoconus is a progressive, non-inflammatory disease of the cornea that causes thinning and protruding of the central tissue. This causes an irregular shape and distorted vision that gets worse over time. Moderate to advanced keratoconus cases cannot be corrected with traditional eyeglasses or contact lenses. Modern scleral lens technology allows us to design a contact lens that rests on the sclera (white part) of the eye, with a vaulted central curvature that does not touch the cornea. These lenses are much more comfortable for the wearer and are filled with a sterile solution that corrects the eyes irregularities and nourishes the corneal tissue. Many keratoconus patients report a renewed quality of life once fitted with scleral lenses.
Astigmatism is a condition in which light rays do not come to a single point focus anywhere in the eye. Instead, light rays are diverged into two separate focal points within the eye. This causes a distortion in your vision that makes round objects look oval and blurred. For decades, there have been limited options available for astigmatic patients, however, the stability and clarity of vision was less than ideal.
Recent advancements by leading vision companies such as J&J Vision, Bausch & Lomb, Ciba Vision and Cooper Vision have resulted in a renewed effort to correct this condition. Today there are endless lens parameters available to eye care practitioners to be able to provide sharp, stable and comfortable vision for astigmatic patients.
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"He that is strucken blind can not forget the precious treasure of his eyesight lost."