Overview of the emerging field of smartphone-powered ophthalmic diagnostics that has the potential to bring down the cost and improve access to healthcare especially in developing countries.
Alternative download link: https://www.dropbox.com/s/c3ef13nlw2mywa7/iphoneFundusCamera.pdf?dl=0
4. PORTABLE/SMARTPHONE fundus cameras #3
Why 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/
5. 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)
8. 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)
13. 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