A fundus camera includes an eyeball-offset detection device and an annular illumination device. The eyeball-offset detection device is configured to detect an offset vector of a lens of the fundus camera relative to an inspected eyeball. The annular illumination device includes a plurality of illumination elements that are arranged in a ring shape around an optical axis of an imaging system of the fundus camera. According to the offset vector of the lens relative to the inspected eyeball, the fundus camera selectively activates one or more illumination elements at corresponding positions to keep an illumination optical path away from a center area of the pupil of the inspected eyeball to reduce effects of corneal reflection and improve illumination quality. Therefore, the abovementioned fundus camera has a large operable range.

A new device attached to a Smartphone has been invented to provide objective vision screening of young children including infants and newborns. The inventive device includes a main plane body which haves a cylindrical container for holding the optical elements and a house for holding the beam splitter. The main plane body is attached to a Smartphone. While the optical elements making the streak of light beam and moving it across the pupils of children, the camera of a Smartphone records the relative movement of the retinal reflex of the children eyes, which gives the information of refractive status, clarity of refractive media, alignment of the both eyes and other conditions of the eyes that may cause amblyopia. The principal of this device is similar to conventional streak retinoscopy, but it examines both eyes simultaneously and has more advantages.

A concise representation illustrating essential elements of a subjective refraction eye test that includes choices of optics offered to a test subject, responses by the test subject indicating respective choices among the optics, and time durations of, between, or both of and between, responses by the test subject indicating the respective choices of optics. The concise representation includes a presentation that illustrates the essential elements of the eye test

The present invention is an electric slit width adjusting system of a slit-lamp microscope consisting of a light slit width adjusting mechanism of the slit lamp, an adjustment motor and a teletype operating mechanism. The light slit width adjusting mechanism of the slit lamp includes a mechanical drive controlling the slit width. The adjustment motor is arranged on the light slit width adjusting mechanism and controlled by the teletype operating mechanism through electrical signals. The teletype operating mechanism with a function of precisely controlling the rotation angle of the adjustment motor is arranged above the operating handle of slit lamp mobile platform (or the base of slit lamp mobile platform).

A vision testing apparatus has a frame including a face plate with at least one eye shield having a viewing slot positioned in a viewing direction perpendicular to the face plate, at least one variable lens element including an outer rail and multiple regions of varying diopter power having a width that is equal to or greater than the width of the viewing slot of the eye shield, and adjustable controls for moving the variable lens element in a direction perpendicularly to the viewing direction along a plane of the face plate. The testing apparatus is portable and can be used in developing nations where visual acuity is not corrected because of lack of access to optometric care.

A controller of an ophthalmic apparatus finely drives and roughly drives a drive unit of an optometry unit. In a case where a tilt operation of tilting the operation stick within a predetermined range is detected by an operation detection unit, the controller finely drives the drive unit by controlling the drive unit in response to the detected tilt operation, and finely changes a position of the optometry unit. In a case where at least one of a tilt operation of tilting the operation stick over a predetermined range and an operation of a rough movement operation unit is detected by the operation detection unit, the controller roughly drives the drive unit by controlling the drive unit in response to the detected operation, and roughly changes the position of the optometry unit.

Ophthalmic Ultrasound Bio-Microscope (UBM) apparatus for eye examinations of a human subject in a supine position and fixating the gaze of his examined eye on an illuminated overhead fixation target. The ophthalmic UBM apparatus has a vertical UBM examination centerline on which overhead fixation target is located therealong and a UBM scanner with a UBM probe directed towards an examined eye at a known spatial position with respect to the overhead fixation target for acquisition of UBM scans of fixated examined eyes.

A slit lamp microscope of some embodiment examples includes an illumination system, first photographing system, first movement mechanism, and controller. The illumination system includes a slit forming unit that forms a slit for generating slit light and projects the slit light onto an anterior segment of a subject's eye from a first direction. The first photographing system photographs the anterior segment onto which the slit light is being projected, from a second direction different from the first direction. The first movement mechanism moves a movable portion that includes at least the slit forming unit. The controller performs a first control for the first movement mechanism to move the movable portion and a second control for the first photographing system to photograph the anterior segment a plurality of times in parallel with each other.

Systems and methods for improved interferometric imaging are presented. One embodiment is a partial field frequency-domain interferometric imaging system in which a light beam is scanned in two directions across a sample and the light scattered from the object is collected using a spatially resolved detector. The light beam could illuminate a spot, a line or a two-dimensional area on the sample. Additional embodiments with applicability to partial field as well as other types of interferometric systems are also presented.

An accommodating intraocular lens assembly can include a first lens, a first stanchion, a second lens, and a second stanchion. The first lens can have a first anterior side and a first posterior side. The first stanchion can have a first distal end connected to the first lens and a first base end. The second lens can have a second anterior side and a second posterior side. The second stanchion can have a second distal end connected to the second lens and a second base end. The first lens and the second lens can move laterally relative to one another during contraction of the ciliary muscle in a vertically-extending plane containing the optic axis of the eye and substantially centered in the eye.