Disclosed is a model eye apparatus by which patients can wear an intraocular lens in reality before a surgery and experience an image that the patients will actually see after the surgery. A wearable model eye apparatus according to the present invention comprises: a plurality of guide members arranged in parallel; an intraocular lens module which is installed to be movable forward or backward by guidance of the plurality of guide members and has an intraocular lens installed therein; and a minus lens module which is installed in front of the intraocular lens module to be movable forward or backward by guidance of the plurality of guide members and has a minus lens disposed therein.

To provide binocular loupes capable of ensuring an optimal focal distance for a user using a simple operation, focus adjustment units disposed in eyepiece units of a pair of left and right loupe bodies of binocular loupes are provided with focus adjustment lenses, and holding rings having magnetic bodies into which the focus adjustment lenses are fitted. The holding rings are mounted in contact with correction lenses constituting optical systems inside the loupe bodies, are drawn and held by magnet rings. By this means, it is possible to readily replace the focus adjustment lenses by mounting the lenses detachably from the loupe bodies, and it is possible to ensure an optimal focal distance.

A digital magnifier monocle may include an eyepiece, a lens, an organic light-emitting diode screen placed between the eyepiece and the lens, and a first electronic module for the generation of a digital image. The first electronic module may be placed between the screen and the lens. The monocle may also have a second electronic module placed between the screen and the first electronic module. The second electronic module may be divided into a first unit configured for the transmission of a digital image from the first electronic module to the screen, and a second unit configured for connection with an augmented reality engine and/or the transmission of said at least one digital image from the monocle to a unit outside of the monocle. The unit external to the monocle being may be designed for the storage of the image.

A spectacle lens including a lens substrate and a photochromic layer, wherein the photochromic layer is a cured layer of a curable composition containing a photochromic compound and a plurality of curable compounds, a surface Martens hardness of the photochromic layer is 5.0 kgf/mm.sup.2 or more, and the plurality of curable compounds contain components (1) to (3) below: (1) neopentyl glycol di(meth)acrylate; (2) a curable compound having an L-scale Rockwell hardness of homopolymer of 60 or more; and (3) a curable compound having an L-scale Rockwell hardness of homopolymer of 40 or less.

A frame for spectacles with magnifying lenses includes a magnifying eyepiece for mounting on each lens. The frame includes: a front mount including, for each lens, a respective slot extending between a central region of the nose support mount and an opposite lateral region of the mount, each slot being configured to receive a portion of a respective lens-carrying support, partially surrounding a peripheral edge portion of the lens, and fixing means for fixing the lens-carrying support which is received in the respective slot to the front mount.

The lens-carrying support is received in the corresponding slot with a coupling play transverse to the front mount, and the fixing means are configured to fix each lens-carrying support to the front mount in a preselected relative positioning which is allowed by the coupling play, making the orientation of each lens adjustable with respect to the front mount.

An eye-mounted device includes a contact lens and an embedded imaging system. The front aperture of the imaging system faces away from the user's eye so that the image sensor in the imaging system detects imagery of a user's external environment. The optics for the imaging system has a folded optical path, which is advantageous for fitting the imaging system into the limited space within the contact lens. In one design, the optics for the imaging system is based on a two mirror design, with a concave mirror followed by a convex mirror.

In an embodiment, a modular augmented reality display is provided that incorporates prescription eyewear that can be used separately by the wearer. In an embodiment, an image is generated from a removable display attached to the eyewear and directed into the edge of a prescription lens, which acts as a waveguide. The image is internally reflected within the prescription lens, and is directed to the wearer by an image combiner embedded within the prescription lens. In an embodiment, the augmented reality display includes a wearable belt pouch that includes a battery and support electronics connected to the eyewear so that the weight on the eyewear is reduced.

A user-wearable fluorescence based visualization system comprising a multi-light lamp assembly that provides for the selected output of light using multiple light emitting sources, wherein the outputted light may be tailored to generate response wavelength by the interaction of the emitted light and a tissue illuminated by the emitted light, through the process of fluorescence, and a viewing system that allows a practitioner view the fluorescent light generated by the tissue, and distinguish between healthy and diseased tissues.

Examples include a device including a fluid lens having a membrane, a substrate, and a fluid at least partially enclosed between the membrane and the substrate. The membrane may have a spatial variation in at least one membrane parameter along a particular direction, that may compensate for gravity sag in the membrane of the fluid lens when the device is worn by a user. Examples also include related methods and systems.

The polymerizable composition for an optical material contains an aromatic iso(thio)cyanate compound, a non-aromatic iso(thio)cyanate compound having an unsaturated aliphatic ring, and a polythiol compound.