Orthokeratology Lenses
Orthokeratology Lenses - Related Videos
08:28
Development of an In Vitro Ocular Platform to Test Contact Lenses
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Cited by 14 •
2016
Current in vitro models for evaluating contact lenses (CLs) and other eye-related applications are severely limited. The presented ocular platform simulates physiological tear flow, tear volume, air exposure and mechanical wear. This system is highly versatile and can be applied to various in vitro analyses with CLs.
06:55
Scanning Light Scattering Profiler (SLPS) Based Methodology to Quantitatively Evaluate Forward and Backward Light Scattering from Intraocular Lenses
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Cited by 2 •
2017
This protocol describes the scanning light scattering profiler (SLSP) that enables the full-angle quantitative evaluation of forward and backward scattering of light from intraocular lenses (IOLs) using goniophotometer principles.
02:48
Developing Myopia in a Mouse Model Through Lens-Induced Defocusing
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2025
Source: Jiang, X., et al. Inducement and evaluation of a murine model of experimental myopia. J. Vis. Exp. (2019)This video demonstrates a procedure for inducing myopia in a mouse through the installation of a custom lens frame. The frame is secured to the exposed skull with dental adhesive, and concave lenses are inserted to shift the focal point behind the retina. This setup stimulates eyeball elongation leading to myopia.
13:59
Reflection and Refraction
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2023
Source: Derek Wilson, Asantha Cooray, PhD, Department of Physics & Astronomy, School of Physical Sciences, University of California, Irvine, CA Light travels at different speeds depending on the material through which it is propagating. When light travels from one material to another, it will either slow down or speed up. In order to conserve energy and momentum, the light must change the direction in which it propagates. This bending of light is known as refraction. Some fraction of the...
07:56
Sequential Application of Glass Coverslips to Assess the Compressive Stiffness of the Mouse Lens: Strain and Morphometric Analyses
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Cited by 28 •
2016
Age-related increases in eye lens stiffness are linked to presbyopia. This protocol describes a simple, cost-effective method for measuring mouse lens stiffness. Mouse lenses, like human lenses, become stiffer with age. This method is precise and can be adapted for lenses from larger animals.
FAQs
Improvement in focusing occurs because the lens’s controlled curvature and intervening tear-fluid layer produce gentle pressure across the cornea. This pressure redistributes the corneal epithelium, the surface cell layer, so the anterior corneal profile becomes temporarily better suited to reduce refractive error. The change alters how light is focused after lens removal while remaining reversible rather than permanent.
Controlled curvature makes the reshaping effect deliberate rather than dependent on an uncontrolled interaction with the cornea. Together with the tear-fluid layer, it allows gentle pressure to influence epithelial distribution and modify the anterior surface. This design supports improved focusing during the day, even though the lenses are worn during sleep and later removed.
Orthokeratology may help manage myopia progression in some children and adolescents, adding a clinical purpose beyond temporary daytime refractive correction. The possible benefit should not be interpreted as permanent correction, because the corneal change is reversible and depends on continued wear. Clinical fitting and follow-up remain important when the method is used for this population.
The outcome depends on more than the lens design itself. Appropriate fitting, careful hygiene, continued adherence to the wearing plan, and follow-up examinations all support safe and consistent use. Monitoring is also essential because corneal complications can occur. These safeguards help clinicians evaluate whether the intended reshaping effect is being maintained and whether problems require attention.
Clinical use requires a suitable lens fit, nighttime wear, removal for daytime activities, and regular follow-up examinations. Hygiene must be maintained throughout the process, and clinicians monitor the cornea for complications. Because the effect depends on continued wear, follow-up also helps assess whether the corneal reshaping remains adequate for the desired reduction in refractive error.
They may be considered when a person wants daytime freedom from glasses or conventional contact lenses, particularly when temporary reduction of myopic refractive error is the goal. Their medical relevance also includes possible myopia management in some younger patients. The trade-off is that the benefit is not permanent: stopping continued wear allows the effect to be reversible.