Integrated device for ophthalmology

Abstract

A device for ophthalmic radiation is provided. The device comprises a radiation interface, an optical branch coupler, and a plurality of ophthalmic units. The radiation interface is adapted to at least one of output and capture radiation on an optical path. The optical path is directable towards a patient's eye. The optical branch coupler is adapted to couple output radiation from a plurality of optical branches into the optical path and to couple captured radiation from the optical path into the optical branches. The captured radiation is spectrally split by the optical branch coupler into the optical branches. Each of the optical branches has a different spectral range. Each of the plurality of ophthalmic units is arranged to couple to one of the optical branches.

1 . A device for ophthalmic radiation, the device comprising:
 a radiation interface adapted to at least one of output and capture radiation on an optical path directable towards an eye;   an optical branch coupler adapted to couple output radiation from a plurality of optical branches into the optical path and to couple captured radiation from the optical path into the optical branches, wherein the captured radiation is spectrally split into the optical branches and each of the optical branches has a different spectral range; and   a plurality of ophthalmic units, each of which being arranged to couple to one or more of the optical branches.   
     
     
         2 . The device of  claim 1 , wherein the optical branch coupler includes one or more beam splitters, each of which having a different spectral transmittance or a spectral reflectance. 
     
     
         3 . The device of  claim 1 , wherein the optical branch coupler includes a multibranched dichroic prism. 
     
     
         4 . The device of  claim 3 , wherein the multibranched dichroic prism comprises glass prisms, each having one or more optical interfaces with one or more optical coatings adapted to transmit or reflect radiation depending on the wavelength of the radiation. 
     
     
         5 . The device of  claim 3  wherein the multibranched dichroic prism comprises one or more of a dichroic crystal and a birefringent crystal. 
     
     
         6 . The device of  claim 4 , wherein the optical interfaces of the glass prisms or the crystals are in direct contact or glued together. 
     
     
         7 . The device of  claim 1 , wherein the ophthalmic units are adapted to be operated simultaneously. 
     
     
         8 . The device of  claim 1  wherein two or more ophthalmic units are arranged to couple to one of the optical branches. 
     
     
         9 . The device of  claim 1  wherein one of the ophthalmic units is adapted to insert output radiation in its optical branch for ophthalmic treatment. 
     
     
         10 . The device of  claim 1  wherein one of the ophthalmic units comprises a fixation unit adapted to at least one of detect a movement of the eye, provide a fixation target and provide an accommodation target. 
     
     
         11 . The device of  claim 1  wherein one of the ophthalmic units is an Optical Coherence Tomography unit, or OCT unit, adapted to perform an OCT measurement. 
     
     
         12 . The device of  claim 11 , wherein the OCT unit comprises an interferometer and a broadband light source, optionally one or more of a Light Emitting Diode, Superluminescent Diode, a Supercontinuum Light Source, a Ti:Sapphire laser, and a Swept Source. 
     
     
         13 . The device of  claim 11 , wherein optical lengths of the optical branches in the multibranched dichroic prism are different and correspond to different measurement depths of OCT measurements. 
     
     
         14 . The device of  claim 1  wherein at least one of the ophthalmic units is a wavefront unit adapted to determine a wavefront of the capture radiation. 
     
     
         15 . The device of  claim 11 , wherein the OCT unit and the wavefront unit share a broadband light source, the wavefront unit being further adapted to selectively apply a narrowband filter to the broadband light source. 
     
     
         16 . The device of  claim 1  wherein at least one of the ophthalmic units is an illumination unit adapted to perform a Scheimpflug measurement of the eye. 
     
     
         17 . The device of  claim 1  wherein at least one of the ophthalmic units is a corneal topography unit adapted to measure a topography of a surface of the eye. 
     
     
         18 . The device of  claim 1  further comprising a controller adapted to control each of the plurality of ophthalmic units and to compute optimized values based on results determined by two or more of the ophthalmic units.