A device for attaching parts of a spectacles frame to one another includes a first attachment element connectable to a first component part of the frame to be plugged into a second attachment element connectable to a second component part of the frame. A locking pin is active between the first and the second attachment element, in a removable manner, transverse to the plugging direction, so as to attach the first and the second component parts of the frame to one another. The first attachment element includes a pair of limbs constructed equidirectionally and at a distance from a common base, while the second attachment element includes a seat that can hold the pair of limbs in the axial plugging direction between opposing internal walls of the seat, the seat being intersected transverse to the plugging direction by an opening in which the locking pin is rotatably held.

Reading glasses, more specifically pince-nez glasses, for short-term, close viewing and reading. For better placement of the reading glasses on the nose, the bridge of the reading glasses is provided with knobs, of which two are located on the outside, making it comfortable to grasp and place the glasses on the nose with two fingers and third knob is located on the upper centre of the bridge. Bridge of the reading glasses is ergonomic. The measurements of the radius of bridge of the reading glasses have been developed ellipsoidal in shape, where radius r.sub.1 is 7.0 mm and r.sub.2 is 7.5 mm and the angle ? of the bridge is 36?.

A pair of glasses is provided. The glasses include a first lens, a second lens, a first temple arm that is disposed close to the first lens, and a second temple arm that is disposed close to the second lens. The glasses further include a position adjusting portion that is mounted on the first lens and the second lens. The position adjusting portion is configured to adjust an overlapping area of the first lens and the second lens. The glasses further include a first display screen on a first temple arm. The first temple arm and the second temple arm may be bent in extension directions of the temple arms, so that a tail end of the first temple arm overlaps a tail end of the second temple arm.

An optical viewing device, consisting of glasses, goggles, visor or other head-worn device, comprised of a vertical aperture, or apertures, designed to limit an athlete's visual field of view and increase the user's focus on the ball position. In this manner, the athlete's eye to ball alignment is enhanced, leading to reduced head movements during use. The improved performance is directly enhanced by the improved eye-ball alignment and reduced head movement during the sporting activity.

An eyeglass-type display apparatus includes an eyeglass-front to be placed in front of the eyes of a user, left and right temples connected to the eyeglass-front and worn on the head of the user, a connector that adjusts the inclination of the eyeglass-front by rotating the eyeglass-front relative to the left and right temples, and an image display unit that is fixed to the eyeglass-front and projects image light onto an eyeball of the user. An axis of rotation of the connector is positioned on the eyeglass-front side of the center of the user's eyeball as viewed from the side.

The present invention provides a spectacle frame and spectacles in which a distance between lenses can be adjusted. A spectacle frame 2 of spectacles 1 includes a bridge portion 4 that holds a pair of left and right lens-holding portions 6 to be movable in a left-right direction, a shaft portion 5 that is rotatably supported in an axial direction by the bridge portion 4 and includes a pair of left and right threaded portions 5a formed with threads in opposite directions to each other, and a fixing portion 7d that fixes the bridge portion 4 and the shaft portion 5, and then position adjustment portions 6b of the lens-holding portions 6 screw to the threaded portions 5a, thereby a distance between the lens-holding portions 6 is adjusted by rotating the shaft portion 5 around an axis.

The rim frame and the lens are continuously restrained to each other over a range other than the gap to stabilize holding of the lens while attachment and detachment of the lens can be facilitated by expanding a gap as consolidating the gaps in the two places into one place due to the deflection of the rim frame and movement of the lens in the left-right direction, whereby the lens can be easily attached and detached without using a tool such as a screwdriver, while can achieve holding stability when fixing the lens and ease of attachment and detachment.

An ergonomic surgical loupe consists of a housing, an objective lens, a mirrored Littrow prism, an ocular lens, and an adjustment mechanism. Light travels through the objective lens, is reflected through the Littrow prism, passes through the ocular lens and strikes the user's eye, enabling a 60 degree viewing angle for performing dental work or similar procedures. Occupational strain on the neck and back of the user is reduced by allowing the user to maintain an upright, neutral head and back position while performing work significantly below eye level.

The present disclosure provides for universally-fitting prescription eyeglasses and kits and methods of use thereof. The prescription eyeglasses advantageously provide for one or more of an adjustable width, and adjustable interpupillary distance, and adjustable temple lengths. In various embodiments, the adjustable eyeglasses may provide for asymmetric arrangements of components for users having asymmetric facial features. The adjustable eyeglasses can accommodate lenses of varying prescription and kits may include sets of replaceable lenses to accommodate prescription needs for patients without lengthy custom lens fitting.

Protective eyewear comprising a pair of eye pieces, each defining one of two opposing inner lateral surfaces spaced by a nose bridge. At least one of the inner lateral surfaces comprises a slot for slidably and releasably engaging a locating rib provided on said nose bridge. Said slot comprises a slot locking element and said nose bridge comprises a nose bridge locking element. In a use configuration with the locating rib of the nose bridge engaged within the slot, the slot locking element and the nose bridge locking element cooperate within said slot to releasably secure the locating rib within the slot.