Obsessed with vision and optics. Opinions (have many but share few) are my own and most posts are from my labs at The University of Waterloo (Canada) and UC Berkeley (USA). Oh...and that's my retina in the profile picture.
RoordaLab
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I should be writing my dissertation, but instead I'm writing about the @nationalacademies.org being compromised.
McNutt here saying that THE NATIONAL ACADEMIES will NOT ENGAGE ON "PARTISAN TOPICS" such as "vaccines" and "climate change".
What happens when R's decide they don't believe in gravity?
Today I took my @ucberkeleyofficial.bsky.social optometry students on a field trip (actually, just outside our building) to observe polarization in the wild. Bottom line? Are polarizing sunglasses 😎 worth it? I think these future optometrists would say YES.
I'm thinking about when ARVO was in Hawaii. #ARVO2026
Three selfies for three ophthalmoscopes....
- Helmholtz's original handheld direct ophthalmoscope from 1850,
- adaptive optics scanning laser ophthalmoscope (AOSLO) in Jacque Duncan's lab at UCSF from the 2010's
- freshly deployed commercial #AOSLO from Robotrak.
#visionscience
#adaptiveoptics
Feels great to be back in the bite bar at #UCBerkeley, doing experiments with my postdoc @shangbangluo.bsky.social and PhD student Jason Wong.
#adaptiveoptics
#AOSLO
#visionscience
#AOOCT
PhD student James Fong (aka the Wizard) using #AOSLO to take me on another trip to Oz to see #olo. The key to the door? A classified cone mosaic of my retina.
#visionscience
#adaptiveoptics
@ucberkeleyofficial.bsky.social
Vision Science makes the front page of NYT!!
featuring work from @neurofishh.bsky.social and @denilsson.bsky.social with comments from Berkeley's own @karthikshekhar.bsky.social
#visionscience
www.nytimes.com/2026/02/23/s...
Yesterday Gerald Westheimer turned 102. Here he is giving the opening lecture at Dennis Levi's retirement Festschrift, which was held on the same day. Happy to report that he's still as sharp and charming as ever.
@ucberkeleyofficial.bsky.social
#visionscience
Most vision scientists would bet that single-cone receptive fields exist in primate fovea, but it was not proven until now.
It took years of sweat and $ to combine #AOSLO and electrophysiology. Congrats to PhD student Keaton Ramsey and his mentor Lawrence Sincich.
www.nature.com/articles/s41...
RoordaLab
Colette Delawalla, PhD
I missed the beginning, but only an absolute pro can start their karaoke set recruiting IOVS editors and then crush I’ve Got Friends In Low Places. @aoiplab.bsky.social #arvo2026
Neural mechanisms underlying high visual acuity are not fully understood. Here the authors show that high resolution visual information is transmitted from the retina to the brain by neurons in t...
