An illumination probe may include a handle, an optic fiber, a tube, and an illumination source connector. The tube may include a tube distal end and a tube proximal end. The tube may include a tube aperture of the tube distal end. The tube proximal end may be disposed in the handle wherein the tube distal end extends out from a distal end of the handle. The optic fiber may include an optic fiber distal end and an optic fiber proximal end. The optic fiber may be disposed in the illumination source connector, the handle, and the tube wherein the optic fiber distal end is disposed in the tube. The tube aperture may be configured to modify a property of incident illumination light.

Principles of the present disclosure are directed to novel methods and devices for focal or global optical stimulation of retina and detecting activity of the retina by collecting and processing the back-scattered optical signal from the retina (Optical RetinoGram). Specifically, the invention provides device and method for quantitatively determining the layer specific activity of retina from the acquired intrinsic back reflected signal by monitoring phase/intensity fluctuations and thereafter employing multifractality algorithm on optical signal for obtaining various multifractal parameters such as width of singularity spectrum, Hurst exponent, fractal dimension, locally connected fractal mapping as well as artificial intelligence based classification for the use of diagnosis of retinal degenerative/ocular disease(s) and asses the progression of diseases or recovery of function due to one or more treatment by therapeutic drugs, devices, protocols.

A modular lens adapter system or kit is provided for mobile anterior and posterior segment ophthalmoscopy. Equipped with various lens adapter modules, respective lenses and a mobile imaging device, a user is provided with tools for various mobile ophthalmoscopy imaging applications. Eye care practitioners can use their existing lenses to customize the modular lens adapter system in a cost-effective way, which allows for mobile and remote capture, viewing, and utilization of clinical images. The various modules are also adaptable to nearly any type of phone or tablet regardless of its dimensions or presence of a protective case. The invention also addresses the need for fewer, smaller, less expensive, and easier to use ophthalmic imaging equipment, which is further important in enabling a broad base of users.

An optical imaging system includes a first lens system housed in a body of a mobile telecommunication device, the first lens system having a first optical axis, a first entrance pupil fixed in space in a reference plane associated with said body, and a first focal length; and an optical telescope providing a diffraction-limited imaging within a spectral range from at least 486 nm to at least 656 nm. The optical imaging system is configured to image, when the optical telescope is inserted between the first lens system and an entrance pupil of a visual system of an eye (EPE), the EPE onto the first entrance pupil and vice versa with a substantially unit magnification.

A retinal imager for imaging a retina of an eye includes an illumination source operable to generate illumination light and a beam splitter operable to receive the illumination light and direct the illumination light along an optical axis. The retinal imager also includes a field lens disposed along the optical axis and an objective lens disposed along the optical axis and operable to contact a cornea of the eye. An aerial image is formed adjacent to the field lens. The retinal imager further includes an image sensor and one or more lenses disposed along the optical axis between the beam splitter and the image sensor. The one or more lenses are operable to form a sensor image at the image sensor.

An instrument head is provided for attachment to a plurality of instrument handles having different power profiles. The instrument head contains an illumination assembly including at least one LED as well as a drive circuit for detecting a power profile of an attached instrument handle and converting variable voltages received from the attached instrument handle to a constant current for powering the at least one LED based on the power profile. Accordingly, the instrument head enables use with a plurality of instrument handles, including those originally configured for use only with incandescent light sources.

Proposed is an ophthalmic lens doublet for indirect ophthalmoscopy. The doublet is cemented into an integral unit from two lens elements, of which is a convex-convex lens element and another is a convex-concave lens element. Both lens elements have external and internal surfaces and may be combined so that the ophthalmic lens doublet has asphericity either on one side or on both sides of the unit. The aspheric surface is characterized by asphericity Z of the following formula (1)
Z=Y.sup.2/{R+[R.sup.2(1+k)Y.sup.2].sup.1/2}(1),
where Z is in one of coordinates in a Cartesian coordinate system, Y is a second coordinate in the Cartesian coordinate system, R and k being variable parameters which are different for each selected values of d, where d is an outer diameter of the ophthalmic lens doublet.

A skin measuring microscope includes a housing, an electronic imager disposed along an imaging axis, and an illumination system. The illumination system includes a plurality of LEDs disposed in a ring-like configuration adjacent a distal end of the housing.

A handheld ophthalmic device configured to perform various optical diagnostic tests to determine the health of a subject's eye. The handheld ophthalmic device is configured to be attached to a smartphone, a cell phone or an electronic tablet. The smartphone, a cell phone or an electronic tablet can be used to view images obtained by the handheld ophthalmic device and to transmit data and images obtained by the handheld ophthalmic device to an ophthalmologist located remotely.

A handheld ophthalmic device configured to perform various optical diagnostic tests to determine the health of a subject's eye. The handheld ophthalmic device is configured to be attached to a smartphone, a cell phone or an electronic tablet. The smartphone, a cell phone or an electronic tablet can be used to view images obtained by the handheld ophthalmic device and to transmit data and images obtained by the handheld ophthalmic device to an ophthalmologist located remotely.