A display system includes a display, a removable lens assembly, and a lens detection sensor. The removable lens is removably coupleable to the display. The lens detection sensor detects the removable lens assembly coupled to the display. The display system may further include a head-mounted display unit that includes the display and the lens detection sensor. The display system may lens information from the removable lens with the lens detection sensor, and may provide an indicator of the removable lens according to the lens information.

Spectacles that control myopia progression have a central zone that achieves foveal vision correction and distributed micro-reticle(s) and corresponding micro-lens(es) around the paracentral and/or peripheral zone of the spectacle. Each micro-lens is disposed between its corresponding micro-reticle and the pupil of a wearer's eye. The micro-reticle(s) and micro-len(s) are integrated with the structure of the spectacle to partially block some of the paracentral and/or peripheral objects from surrounding optical environment. The rest of the paracentral and/or peripheral retinal areas are still available for a wearer's eye to sense the presence and movement of surrounding objects.

[Object] To provide a surgical loupe that can adjust a convergence angle more easily.

[Solution] A surgical loupe including: two optical systems that cause images of light from a surgical field which is an observation target to be formed on eyes of a wearer; and a drive unit for adjusting a convergence angle formed by optical axes of the two optical systems.

A slip-resistant eyewear system comprising an eyewear frame generally comprises first and second hinges coupled to the eyewear frame which are also coupled to first and second tension adjusters. First and second bows are coupled to first and second tension adjusters. The system may comprise an eyewear retainer comprising a first end configured to couple to the first bow and a second end configured to couple to a second bow such that a tension is maintained on the unitary eyewear retainer when the unitary eyewear retainer extends around a back of a head of a user.

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.

An augmented reality system can include an electronic contact lens and a power source. The source generates a time-varying magnetic field which induces a time-varying current in conductive coils embedded in the electronic contact lens. The electronic contact lens uses the induced current to harvest power or to determine the orientation of the contact lens. The embedded conductive coils are positioned such that the AR system can harvest power and estimate the orientation of the eye at a variety of contact lens orientations. The conductive coils may be embedded within the contact lens at any number of positions and orientations. The embedded coils can encircle a portion of the contact lens and can collectively form an annulus within the contact lens. The conductive coils are embedded such that for at least three conductive coils, no two of the planes defined by the at least three conductive coils are parallel.

Disclosed is a distance vision-realizing eyeglasses for an image display device, including: a case which surrounds an eye area of a wearer and has a pair of holes formed in front thereof; a double convex lens assembly which includes a pair of lens housings respectively mounted in the pair of holes of the case and a pair of double convex lenses respectively provided in the pair of lens housings on a front straight line of both eyes of the wearer, the pair of the double convex lenses including an outer convex lens positioned on an outer side and fixed to the lens housing and an inner convex lens positioned inside the lens housing and mounted movably forward and backward; and a driving part which is installed between the pair of lens housings and moves a pair of inner convex lenses of the double convex lens assembly.

Spectacles having a spectacle frame and at least one additional frame that can be placed on the front of the spectacle frame so as to be removable, both frames having lenses made of transparent material. The lenses of the spectacle frame are varifocal lenses for the purpose of correcting vision for different distance ranges in order to achieve in each case maximum or clear visual acuity for at least one distance range, while the lenses of the additional frame are single-vision lenses or varifocal lenses. In combination with the lenses of the spectacle frame, the lenses of the additional frame correct vision in a manner customized to the needs of the user. In a simple, cost-effective and convenient manner, a broad field of sharp vision in all distance ranges is afforded to the user, and therefore significantly improved vision comfort tailored to their requirements is provided.

Spectacles having a spectacle frame and at least one additional frame that can be placed on the front of the spectacle frame so as to be removable, both frames having lenses made of transparent material. The lenses of the spectacle frame are varifocal lenses for the purpose of correcting vision for different distance ranges in order to achieve in each case maximum or clear visual acuity for at least one distance range, while the lenses of the additional frame are single-vision lenses or varifocal lenses. In combination with the lenses of the spectacle frame, the lenses of the additional frame correct vision in a manner customized to the needs of the user. In a simple, cost-effective and convenient manner, a broad field of sharp vision in all distance ranges is afforded to the user, and therefore significantly improved vision comfort tailored to their requirements is provided.

An electronic loupe (400) features a view piece (401) mounted to a headpiece (405) by a linkage (406). A camera (402) and LED light (403) are mounted (404) in front of the view piece (401) to provide an image in the view piece (401) on displays (not shown) for the user. A control box (410) may be wired to the electronic loupe, or wirelessly connected, or the controls for the electronic loupe may reside on the view piece (401) and the headpiece (405). Other controls, such as a remote control or a foot pedal, are also disclosed. Illumination controls and location are designed for ideal illumination along various spectra. Automatic recording and documentation is also provided.