In his blog, Doug Rett, OD, FAAO, digs deeper into questions every eye doctor has had at one point in his or her career. He sees patients and works with students and residents at the optometry clinic for the VA Boston Healthcare System and will use his blog to bring the teaching points he sees in clinic to a larger audience. Contact him at

Disclosure: Rett has no relevant financial disclosures.

BLOG: If my patient has a hemianopia, will there be OCT changes?

September 26, 2017

Most of us have seen patients with visual field changes from stroke, and we confirm a homonymous hemianopia (HH, or hemianopsia, if you prefer; as far as I can tell…

BLOG: How the lamina cribrosa changes with glaucoma – part 2

July 26, 2017

Last month we discussed enhanced depth imaging and its ability to image the lamina cribrosa, specifically in patients with glaucoma. This month we’ll get into a…

BLOG: How does the lamina cribrosa change with glaucoma?

June 21, 2017

In my clinic, we see a lot of glaucoma (and glaucoma suspect) patients, and we are always running retinal nerve fiber layer optical coherence tomography on them. This…

BLOG: How do androgen and estrogen affect dry eye? (part 2)

May 12, 2017

Last month we learned how androgen and (to a lesser extent) estrogen levels can influence dry eye. specifically, how a decrease in systemic androgen levels can lead to…

BLOG: How do androgen and estrogen affect dry eye?

April 13, 2017

I work in the optometry clinic at a VA hospital, so I see a lot of men older than 65 years, and the vast majority of my patients have meibomian gland dysfunction. Some…

BLOG: Can you use phenylephrine eye drops in patients taking antidepressants?

March 1, 2017

Each room in my clinic has a list of medications taped to the wall. It’s basically the only thing on the walls besides the phone number to call during an emergency…

BLOG: How can I tell if my patient has myasthenia gravis?

February 1, 2017

Last month a patient of mine came back to the clinic telling me of his difficulty with his glasses. His complaints have always been variable, but mostly stating that he…

BLOG: ‘Doc, can I take this drug if I have glaucoma?’

January 4, 2017

In the mid-1990s, the FDA relaxed regulations regarding direct-to-consumer pharmaceutical advertising that brought ads for medications from the magazine pages (where…

BLOG: Just what is ocular immune privilege?

November 29, 2016

Lately we have had a rash of iritis cases in our clinic, so I thought this month would be a good time to talk about ocular immunology. As we know, inflammation can be a…

BLOG: Why is it called 30-2?

October 26, 2016

Specifically, what’s the “2” signify? When I was asked this question, I felt like I had learned this answer at one point in my career, but since forgot…