Described are polymerizable high energy light absorbing compounds. The compounds absorb various wavelengths of ultraviolet and/or high energy visible light and are suitable for incorporation in various products, such as biomedical devices and ophthalmic devices. Such devices exhibit a number of desirable properties, including favorable vision break-up times.

A method of improving emmetropization or slowing myopia development in an eye is provided that involves adjusting the vision in the eye to achieve one or both of increase the distance between the long-wavelength focal plane and the short wavelength focal plane; and position the short wavelength focal plane closer to the cornea than it would normally be located. Multi-spectral devices (e.g., lenses and spectacles) are provided that are useful to improve emmetropization or preventing or reducing the development of myopia, which are optionally multi-focal as well.

Devices and systems for treating based on light therapy are disclosed. One example device includes an eyewear configured for placement in front of an eye to allow light to reach the eye, and one or more filters having transmission spectra within a range that approximately spans 450 to 570 nm associated with blue or green light. The one or more filters is configured to block light spectra outside of said range and to allow the blue or green light to reach the eye for administering light therapy to a subject exhibiting pain.

Described are polymerizable high energy light absorbing compounds. The compounds absorb various wavelengths of ultraviolet and/or high energy visible light and are suitable for incorporation in various products, such as biomedical devices and ophthalmic devices.

A visual field observation training lens is disclosed, along with corresponding training eyewear. An associated method for training visual observation toward a designated field of view is provided.

Some embodiments provide a lens including a lens body and an optical filter configured to attenuate visible light in certain spectral bands. At least some of the spectral bands can include spectral features that tend to substantially increase the colorfulness, clarity, and/or vividness of a scene. In certain embodiments, eyewear incorporates an optical filter that enhances chroma within one or more spectral bands. In some embodiments, a wearer of the eyewear can perceive the increase in chroma when viewing at least certain types of scenes.

An eyeglass lens material can be used to make an eyeglass lens and at least includes a mixture of Ag/SiO.sub.x composite nanoparticles and at least one type of monomer. The eyeglass lens is capable of blocking blue light. The monomer undergoes a material curing procedure to form a main body that contains and is mixed with the Ag/SiO.sub.x composite nanoparticles. As the Ag/SiO.sub.x composite nanoparticles in the eyeglass lens material can absorb relatively high-energy blue light, a contact lens made of the eyeglass lens material can block blue light.

The disclosure relates to an optical element intended to be worn in front of an eye of a human wearer. The optical element includes a dye composition configured so that, when the optical element is worn by a wearer having a given skin reflectance and is illuminated by a light source from a scene: —a first light beam is transmitted by the optical element towards the wearer, the first light beam having a first chroma; —a second light beam is transmitted by the optical element towards the scene after being reflected by the skin of the wearer, the second light beam having a second chroma; and —the absolute difference between the second chroma and the first chroma is greater than 6.

Described are polymerizable fused tricyclic compounds of formula I:

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wherein R.sup.1, R.sup.2, R.sup.3, m, n, t, and rings B, C, and D are as defined herein. The compounds absorb various wavelengths of ultraviolet and/or visible light (such as high energy visible light) and are suitable for incorporation in a variety of products, such as biomedical devices and ophthalmic devices.

The invention relates to a refractive surface for blocking short- and medium-wavelength visible-spectrum radiation that affects human physiology. The refractive surface selectively absorbs short wavelengths between 380 nm and 500 nm, between a maximum and a minimum absorption threshold, and selectively absorbs medium wavelengths between 500 nm and 590 nm, between a maximum and a minimum absorption threshold, the selective absorption of short and medium wavelengths between 380 nm and 590 nm not completely blocking the passage of visible light in this range. Other embodiments include an LED screen, a software product and an electronic device, and ophthalmic, intraocular or sunglass lenses.