title: [New options for digital photo documentation during routine examination for ophthalmologists].
abstract: BACKGROUND
  Many clinical investigations cannot be carried out at the examination unit or a slit lamp. Here we present three new options to obtain digital pictures in a routine clinic at a slit lamp and evaluate how user friendly they are.
  
  
  METHODS
  A) First, a digital photo documentation is examined at a conventional slit lamp by a modified binocular ray splitter. One ray of the binocular ray splitter is connected to a digital camera, while the second ray in this patented prototype is connected to the light sources of a synchronised flash light. B) A Smartphone generated fundus images via the monocular of a microscope. Macroscopic details up to 60× at the external eye were obtained by a magnifying gadget of the iPhone. C) With a USB microscope, high resolutions pictures were generated without large technical expense directly at the job and digitally were archived over an USB connection.
  
  
  RESULTS
  A trained ophthalmologist demonstrated an excellent documentation at a slit lamp using all 3 digital camera systems. The new ray splitter allows enhanced the image quality at the anterior and posterior segments of the eye. Also the Smartphone obtained by its autofocus and automatic exposure control stunningly high resolution images at the fundus. An attached magnifying aperture glass enables documentation with a 20-fold magnification and is already used in dermatology as the "Handyskope". The USB microscope may be used to record macroscopic details with a 200-fold magnification and resolution of 2 million pixels. It is connected to a PC desktop at the workstation and has only a limited depth resolution, requiring a precise focus.
  
  
  CONCLUSIONS
  The increasing distribution of the Smartphone and significant improvement of its digital camera make its use in medicine meaningful. Low-priced attempts and mobile applications open new implications in the evaluation of ophthalmological patients.
authors.affiliation: Augenklinik, Pallas Klinik, Olten, Switzerland.
authors.forename: A
authors.initials: A
authors.lastname: Tietjen
authors.forename: B V
authors.initials: BV
authors.lastname: Stanzel
authors.forename: S
authors.initials: S
authors.lastname: Saxena
authors.forename: A
authors.initials: A
authors.lastname: Bezatis
authors.forename: M
authors.initials: M
authors.lastname: Müller
authors.forename: C H
authors.initials: CH
authors.lastname: Meyer
mesh_terms: D040421:Cell Phone; D034201:Computers, Handheld; D003955:Diagnostic Tests, Routine / Q000295:instrumentation / Q000379:methods; D004282:Documentation / Q000379:methods*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D006801:Humans; D016247:Information Storage and Retrieval / Q000379:methods*; D019721:Ophthalmoscopes; D009887:Ophthalmoscopy / Q000379:methods; D010781:Photography / Q000295:instrumentation* / Q000379:methods; D011873:Radiology Information Systems; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*