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In the US market, soft contact lenses are approved by the US Food and Drug Administration. [2] The American Optometric Association published a contact lens comparison chart called Advantages and Disadvantages of Various Types of Contact Lenses on the differences between them. [3] These include: soft contact lenses; rigid gas-permeable (RGP ...
Orthokeratology lens. Orthokeratology, also referred to as Night lenses, Ortho-K, OK, Overnight Vision Correction, Corneal Refractive Therapy (CRT), Accelerated Orthokeretology, Cornea Corrective Contacts, Eccentricity Zero Molding, and Gentle Vision Shaping System (GVSS), is the use of gas-permeable contact lenses that temporarily reshape the cornea to reduce refractive errors such as myopia ...
Contoura Vision has resulted in vision outcomes better than 6/6 (or 20/20, the standardized normal vision) in multiple patients who were a part of validation trials by the US FDA. Contoura Vision is the only technology where consistent success beyond 20/20 vision has been achieved in the majority of patients.
A contact lens rests directly on the surface of the cornea and moves in sync with all eye movements; consequently, a contact lens is always almost perfectly aligned on center with the pupil, and there is never any significant off-axis misalignment between the pupil and the optical center of the lens.
Refractive surgery is an optional eye surgery used to improve the refractive state of the eye and decrease or eliminate dependency on glasses or contact lenses. This can include various methods of surgical remodeling of the cornea (keratomileusis), lens implantation or lens replacement.
Laser Blended Vision is suitable in general for anyone with presbyopia who is also a candidate for corneal laser eye surgery; the range of preoperative prescriptions that can be treated varies, but results have been published for laser blended vision using the Carl Zeiss Meditec MEL80 excimer laser for myopia (short-sightedness) up to -8.50D ...
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