An amateur’s golf quest sheds light on how we learn: some vision therapy related thoughts

I'm working on some more technical vision nerdy posts for the near future but meanwhile I came accross an interesting Time Magazine article. A 30 year old commercial photographer named Dan McLaughlin living in Portland, Ore., quit his job and decided to make some changes. He committed himself to a goal. Someday he'd be playing the Masters Golf Tournament, but until then he had barely swung a club in his life. Since his 30th-birthday he has logged about 4000 hours of practice time and has lowered his 'handicap'. Since April 2010, he has…Read more …

Session 51: The last 10%

I took the wrong train to get to my optometrists office today. I had to run and still arrived eight minutes late... At least I made it. The running however messed up my visual performance during this training session. I used to be a great runner but it's always been sort of a given that after running binocular vision isn't something to rely on. After I calmed down I did my regular exercises and talked to my optometrist about my experiences. About how over the last few weeks I have been able to…Read more …

What other visual anomalies do amblyopes have besides poor stereopsis or reduced visual acuity?

Amblyopia (lazy eye) is the incomplete development of binocular or two-eyed vision in the brain. The most well-known symptoms of amblyopia are the lack of 3D vision (stereopsis) and reduced visual acuity. Notwithstanding, amblyopes also often have other visual anomalies besides poor stereopsis or reduced visual acuity. May also be affected: • poorer contrast sensitivity (sometimes just high spatial frequencies, central vision) Most patients with amblyopia have reduced contrast sensitivity, in addition to poor visual acuity. The visual anomaly can differ, however if the amblyopia is caused by strabismus or optical defocus. Strabismic…Read more …

The human visual system

"The sensory system that has been best looked at is the visual system. Primates are highly visual animals and it turns out that human beings probably have, in addition to the primary visual cortices, thirty or more other areas of the cortex devoted to vision. Let's think about what that's about... Here's this cortex that we thought of as higher order association cortex and now we find out that it's sensory in nature. Well, how do we get information about the world? We get it through our sensory systems and one of the…Read more …