Connecting Cataracts and Radioactivity

Damage at Fukushima power station; image by digitalglobe.com.

With the multi-layered disaster faced in Japan right now, it’s hard to look past the immediate needs and concerns to the future impacts of of the earthquake, tsunami, and nuculear reactor meltdowns.

There’s been much comparison of the dangers of the Fukushima Daiichi nuclear plant to the disaster at Chernobyl, which happened a quarter of a century ago. While the situation in Japan appears to be less dire (although much is still unknown), scientists were able to learn much from the longterm effects of the Chernobyl meltdown that may come into play as the recent crisis unfolds. 

Listening to NPR as I commuted home Monday night, I learned that a number of the Chernobyl emergency workers that were exposed to high doses of radiation developed cataracts. This connection was unknown prior to the Russian meltdown. There are mitigating factors for the Japanese: the exposure to radiation has thus far been relatively light, and there are treatments available to limit or slow the growth of cataracts.

To put it in perspective, an increased probability of developing cataracts in the future may be a minor concern to those struggling to make it through the crisis. But once the dust settles, long-term impacts will begin to reveal themselves. 

Cataracts are a leading cause of blindness—I encourage any reader to stay attuned to the common warning signs:

• Painless blurring of vision
• Frequent prescription changes for corrective lenses
• Glare and haloes
• Colors looking dull and brownish
• Poor night vision
• Both sensitivity to light and finding lighting too dim

My heart goes out to the people of Japan as they fight to stay safe and cope with the loss of loved ones. I’m making a donation to the Red Cross to help in any small way that I can. And as part of our commitment to the global community, VSP is helping double those dollars by matching up to $10,000 in employee contributions to relief funds.