Yet another reason to go outside.

A new study investigated whether there was a connection between serum 25-hydroxy vitamin D, vitamin B12, and folic acid levels in patients with progressive and nonprogressive keratoconus. The key question they were looking to answer was: Does the insufficiency of vitamin D play a crucial role in the etiopathogenesis of keratoconus?

Tell me about the study.

The study included 55 patients with keratoconus (roughly half were progressive and half nonprogressive) and 30 controls. Serum 25-hydroxy vitamin D, B12, and folic acid levels were measured and compared between the control group and the keratoconus groups.

What did they find?

Serum vitamin D levels were significantly reduced in the keratoconus group as compared to the control group. There was a small difference in vitamin D levels between the progressive and nonprogressive keratoconus groups, but this was not statistically significant. There was no difference in the B12 and folic acid levels between the three groups.

The take home:

Vitamin D supplementation can be promising for vitamin-deficient patients in preventing the development of keratoconus. However, randomized controlled prospective studies investigating the topographic changes in patients with keratoconus after vitamin supplementation are necessary to suggest a regimen.


Can you fill out my driver's license form for me?

Starting October 1st, South Carolinians will be required to have their vision tested before renewing their driver's licenses. (via)


Another pair of smart glasses fades into the distance.

VSP is discontinuing the sale of Level smart glasses. (via)


The cost for a COVID-19 antibody test for one patient. The craziest part? His insurance paid it in full. (via)

See you next week!