April 2019 Issue
Feature Articles
Polarization-Resolved Microscopy in the Life Sciences
Using light polarization as an additional degree of freedom in microscopy can provide new insights into molecular organization.
by Sophie BrasseletDepartments and Columns
Cancer: A Growing Global Concern
Global data from the International Agency for Research on Cancer shows 18.1 million new cases and 9.6 million cancer deaths in 2018. Here we look at rates for the most prevalent types of cancer. For more on the role of optics in early cancer detection, which can significantly improve survival rates, see this month’s cover story.
Seeing Women’s Health in a New Light
A global health center is aiming to empower women through the design of biophotonic technologies.
Checking In with Photomedicine
A postdoctoral researcher in biomedical optics shares what she’s been working on since becoming the first recipient of the OSA Foundation’s Thomas Deutsch Fellowship.
Seasonal Variation in Optics and Photonics Revenues
Reflecting on first quarter revenues as a predictor for the rest of the year.
From Threading Light Through Fiber to Modern Medicine
The historical journey of optical-fiber imaging.
Also in this Issue
30, 20, and 10 Years Ago in OPN
Birth of a pulsar; retinal scanning; the International Liquid Mirror Telescope.
Connie Chang-Hasnain Attends OSK Winter Meeting / OSC Renamed in Wyant’s Honor / OSA Fellow Stories / Elizabeth Rogan Signs Human Rights Declaration for OSA / Celebrating the International Day of Women and Girls in Science / OSA Award Winners / López-Mariscal Named Public Policy Council Chair / OIDA at Photonics West / Thank You, Editors and Volunteers

![Manual probe system with needles for test of semiconductor on silicon wafer. [A. Morozov / Getty]](https://opnmedia.blob.core.windows.net/$web/opn/media/images/articles/2025/1125/departments/202511-cover-web.jpg?ext=.jpg)
![Researcher Clara Saraceno in the lab. [Image by Carsten Behler Photography]](https://opnmedia.blob.core.windows.net/$web/opn/media/images/articles/2025/1025/departments/202510-cover-web.jpg?ext=.jpg)