A fundus camera displays guide information on a display panel which can be viewed by a testee to guide the testee to adjust a relative position of the fundus camera and a tested eyeball of the testee to a determined position. Therefore, the testee can use the above-mentioned fundus camera to self-shoot fundus images with better image quality. A method for self-shooting fundus is also disclosed.

Apparatus and methods of non-mydriatic fundus imaging are disclosed. Fundus imaging apparatus include an infrared light unit configured to illuminate during a fundus scan. Based on fundus scanning, a first focus position is determined. Fundus images are then captured starting at the first focus position. Focus of the fundus imaging apparatus is adjusted to a plurality of sequential diopters and images captured at each adjustment.

Disclosed herein are devices and methods for generating stereoscopic views of the eye (or any desired anatomic structure) using a dual-camera portable computing device. The locations of the two cameras are fixed, and the camera lenses may have different focal lengths. For example, the focal length of the second camera lens may be longer than the focal length of the first camera lens. One variation of a detachable imaging system comprises an objective lens and a relay lens that are disposed over the two cameras. The relay lens may be disposed over the first and second cameras, and have a focal length that is greater than the focal length of the first camera lens and less than or equal to the focal length of the second camera lens.

Methods and apparatuses for fundus imaging are presented that use sequential selective illumination patterns to suppress unwanted reflections, scattering and haze from various optical components of a fundus-viewing instrument. This is particularly the case with those unwanted reflections produced by the objective lens contained within said instrument.

An apparatus, and corresponding method, for determining a refractive property of an eye includes a housing with a port configured to receive an eye and also light from the eye. A tunable lens can be mounted to the housing to apply a variable focal power to the light from the eye and to pass the light along an optical path toward a wavefront sensor within the housing. The wavefront sensor can receive the light via the optical path and measure a wavefront thereof. A determination module can be configured to determine a property of the eye based on the wavefront. Embodiments can be handheld, portable, and open view, while providing objective wavefront aberrometry, subjective phoroptry, and accommodation and presbyoptic evaluation, as well as lensometry functions.

The present invention relates to portable image acquisition apparatus (10). The portable image acquisition apparatus (10) is configured to acquire at least one image of apart of a human or animal body. The portable image acquisition apparatus comprises a main body (12) defining a window (20) and an imaging arrangement (16) operable to acquire an image of a part of a human or animal body by way of an imaging path which passes through the window (20). The portable image acquisition apparatus (10) also comprises a lighting module (14) comprising a light source and an optical arrangement (50), the lighting module (14) and the main body (12) being configured to releasably couple with each other when in use. The light source is configured to emit a beam of non-coherent light in a direction substantially perpendicular to the imaging path. The optical arrangement (50) is configured to receive the beam of light and change a direction of propagation of the received light whereby a beam of light is directed through the window (20). The portable image acquisition apparatus (10) is configured such that between the optical arrangement (50) and the window the imaging path and the beam of light have substantially opposite directions and at least in part occupy the same space.

A medical diagnostic instrument or a plurality of disparate medical diagnostic instruments are configured with a common optical architecture that functionally creates a virtual eye to create closer proximity to a patient and therefore increase the field of view in regard to a target of interest. The optical system includes a distal optical element, at least one relay lens and an eyepiece lens in which the optical system can be integrated within at least one instrument or be provided using a releasable module. Additionally, at least one of a viewing assembly and illumination assembly of at least one medical diagnostic instrument can be assembled using a series of components that are connected by interlocking features.

An adapter configured to engage with a hand held computer device to allow a camera on the hand held computer device to take a high quality image of an eye. The adapter allows for high quality imaging of the anterior portion of the eye and the posterior portion of the eye. The adapter can include additional modular components such as an optical pathway enclosure and a beamsplitter module.

A manual image-capturing device for the registration of low-cost ophthalmological images, accessible to those countries and places that do not have access to conventional high-cost devices, wherein the device of the invention allows taking and recording images of the retina using smart mobile devices such as for example smart phones, also allowing live transmission of the ophthalmological examination.

An eye-imaging apparatus including red, green, and blue light sources, one or more optical lenses, a light guide cable to transmit light from the light source, a one-chip color image sensor including a shutter, the color image sensor being operable to measure red, green, and blue light in the imaging path and transmit measured colored light in respective red, green, and blue channels. The red, green, and blue light sources are sequentially flashed in synchronization with the operation of the image sensor and the color image sensor captures red, green, and blue images in synchronization with the flashed color. The color image sensor transmits the colored images on respective color channels one at a time.