SMARTphone OPHTHALMIC DIAGNOSTICSStartups and optical designs

Petteri Teikari, PhDhttp://petteri-teikari.com/

version Thu 22 September 2016

Smartphone fundus cameras #1

http://www.odocs-tech.com/

http://www.peekvision.org/

d-eyecare.com

ophthalmicdocs.com

OPEN-SOURCE COMMUNITY

Smartphone fundus cameras #2

volk.com

medisave.co.uk

PORTABLE/SMARTPHONE fundus cameras #3Why would you need someone else to take a picture of your own eye?

http://web.media.mit.edu/~tswedish/projects/eyeSelfie.html

http://www.optomed.com/

OPHTHALMOLOGICAL OPTICS

A The human eye as an optical system (Sliney 2005) - estimates of human eye focal length f

vary between 17-24 mm, see e.g.hypertextbook.com (f = 22.3 mm standardized result)

B Photoreceptor optics (Warrant and Nilsson 1998)

SMARTPHONE SENSOR&OPTICS

anandtech.com

dpreview.com

anandtech.com

“Easiest to design to iPhones as the optomechanics are the same, whereas with different Android phones, the optics should be customized to each model”

OPTICAL DESIGNS #1

Giardini et al. (2014)[PDF]

Fang et al. (2015)

OPTICAL DESIGNS #2

Exploded view of the D-Eye module (angles and distances between components are approximated). Retinal images are acquired using coaxial illumination and imaging paths thanks to a beam splitter (C). The blue arrow depicts the path of the light; red arrow depicts the path of fundus imaging. Device components are glass platelet (A) with imprinted negative lens (A )′ , photo-absorbing wall (B), beam splitter (C), mirror (D), plastic case (E), diaphragm (F), polarized filters (G, H), flash and camera glass (J, I), and magnetic external ring (K). Russo et al. (2015)

OPTICAL DESIGNS #3

http://web.media.mit.edu/~tswedish/projects/eyeSelfie.html

“The subject aligns his/her own for optimal image”

OPTICAL DESIGNS #4

Bergeles et al. (2015)

OPTICAL DESIGNS #5

3ders.org

ophthalmicdocs.com

3D print your own parts, or have them printed for you at Shapeways

OPTICAL DESIGNS #6https://hackaday.io/project/11943-open-indirect-ophthalmoscope

Including CAD files for 3D Printingg and Eagle files for the PCB design

Medical optics Small-scale micro-optics

http://nanocomp.fi/what-we-do/applications/healthcare/

https://www.luxexcel.com/portfolio/microstructures-micro-optics/3D printed custom microstructures and micro optics, LUXeXceL

http://dx.doi.org/10.1038/nphoton.2016.121 Two-photon direct laser writing of ultracompact multi-lens objectives