An ophthalmologic apparatus includes an image sensor that acquires first and second images of an anterior segment of a subject's eye at different timings, and processing circuitry that calculates a rotational movement amount between a partial image in the second image and a corresponding partial image in the first image. The processing circuitry performs registration between the partial images in a rotation direction based on the rotational movement amount and performs a phase only correlation processing to calculate a parallel movement amount. The processing circuitry controls an actuator that moves the subject's eye and the optical system relative to each other based on at least one of the rotational movement amount and the parallel movement amount, specifies the partial image in the second image based on the first image and the second image, and calculates the rotational movement amount between the corresponding partial image and the specified partial image.

An operating microscope (2, 48) for observing an eye (77) is provided. The operating microscope (2, 48) comprises a main objective (5) and a fundus imaging system (71) that is positionable in the beam path (7) between the eye (77) and the main objective (5), said fundus imaging system having an ophthalmoscopy magnifier (73). The main objective (5) of the operating microscope (2, 48) has a focal length in the range between 90 mm and 160 mm. The fundus imaging system (71) also can comprise an optics group (81), the dispersion properties of which are matched to the dispersion properties of the ophthalmoscopy magnifier (73) in such a way that the optics group (81) compensates a chromatic aberration of the ophthalmoscopy magnifier (73).

A device for measuring facial anatomical parameters is provided. The device has a vertical bar having a top portion, middle portion, and a bottom portion and a horizontal slide adjustably affixed to the vertical bar. It has a forehead positioner pivotably and adjustably affixed to the top portion of the vertical bar, wherein the forehead positioner receives a forehead of the patient, a first mirror adjustably affixed to the left portion of the horizontal slide, wherein the first mirror is slidable along the horizontal slide, and wherein the first mirror rotates around its own Y-axis, and a second mirror adjustably affixed to the right portion of the horizontal slide, wherein the second mirror is slidable along the horizontal slide. A measuring grid on or proximate both the first mirror and the second mirror, wherein the measuring grids allows an examiner to accurately measure a point of interest of the facial anatomic parameters.

A biological object observation system includes an observation optical unit, a photodetector, a display unit, a detection unit, and a processor. The observation optical unit includes an optical system that guides a luminous flux from a biological object and a drive unit that drives the optical system. The photodetector receives optical information in accordance with the biological object. The display unit displays an observation image of the biological object generated on the basis of the optical information. The detection unit detects one of a position and a movement of an object in a display region of the displayed observation image. The processor controls the drive unit in accordance with the one of the position and the movement of the object that is detected.

An ophthalmologic apparatus includes: an ophthalmologic apparatus body having: an objective lens that faces a subject's eye; a first illumination optical system that irradiates a cornea of the subject's eye with illumination light emitted from a first illumination light source along an optical axis overlapping an optical axis center of the objective lens; an interference image capturing camera that takes an image of a corneal reflection light through the objective lens and outputs an imaging signal; and a calculation unit that calculates, based on a corneal reflection image, of a corneal reflection light, input from the interference image capturing camera, a thickness of a tear fluid film at each position on the corneal surface; and a guide rail that supports the ophthalmologic apparatus body. The guide rail supports the ophthalmologic apparatus body in a rotatable manner such that an optical axis center of the objective lens is positioned obliquely with respect to a horizontal direction orthogonal to a gravity direction.

Provided is an ophthalmic apparatus including: an optical head portion including an optical system arranged to measure an eye to be inspected; a movable portion arranged to move the optical head portion in a horizontal direction relative to a base portion; an operation stick, which includes an urging portion arranged to apply an urging force between the base portion and the movable portion, and is provided on the movable portion so as to be tiltable; and an urging force reduction mechanism arranged to reduce the urging force when the operation stick is tilted by a predetermined angle or larger.

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.

The invention relates to a novel open retinoscope comprising: a body (3) comprising a light source (31) oriented in the longitudinal direction and a first coupling means (32) for coupling to a Volk lens (51) holder in a longitudinally sliding manner; a Volk lens (51) holder (5), coupled in a longitudinally sliding manner to the body (3), where the holder (5) comprises a second longitudinal sliding coupling means (52) which is complementary to the first longitudinal sliding coupling means (32) of the body (3); and a smartphone adaptor (2) which can be connected to the body (3) in a transversely sliding manner.

Disclosed is a patient interface for affixment on onto a patient eye, said patient interface including a negative pressure cavity with a top wall and a circumferential outer wall, an optical passage, wherein the top wall circumferentially surrounds the optical passage and wherein the circumferential outer wall projects from the top wall and circumferentially surrounds the optical passage; a number of rib members, the rib members projecting separately from each other from the top wall into the negative pressure cavity between the circumferential outer wall and the optical passage.

Retinal imaging systems and methods are described. In an embodiment, the retinal imaging system includes an eyepiece lens assembly; an image sensor adapted to acquire a retinal image of an eye through the eyepiece lens assembly; a dynamic fixation target optically coupled to the eyepiece lens assembly such that the dynamic fixation target is viewable through the eyepiece lens assembly; and a controller communicatively coupled to the image sensor and the dynamic fixation target. In an embodiment, the dynamic fixation target includes a display where an image generated by the display is controlled by a position of a user's eye relative to the eyepiece lens assembly.