Chernoby liquidators

Worgul et al. 2007 [12]

Number of subjects

8607

Mean age at exposure

32.7 years

Mean age at eye examination

44.9 years then 47 years

Time lag since exposure

12 and 14 years

Median eye lens dose

123 mGy (94%<400 mGy)

Results

OR/1Gy=1.70 (1.22-2.38) (any type) OR/1Gy=1.42 (PSC) Not significant for CC Increased risk above 0.5 Gy Threshold: 0.34 to 0.5 Gy according to the type, maximum 0.7 Gy

Astronauts

Cucinotta at al. 2001 [23]

Chylack et al. 2009 [25]

Rastegar et al. 2005 [24]

Number of subjects

295

171 (control group=247)

21 (control group=395)

Eye lens dose

0.2-91 mSv

15.1-129.3 mSv

-

Results

HR=3.73 (p=0.012) high doses Vs. low doses for PSC, NC or mixed at 60 yrs. HR=3.44 for NC alone  at 65 yrs.

 

Significant increase of CC (p=0.015)

 

OR=3.02 (1.44-6.35) for NC

Airline pilots

Rafnsson et al. 2005 [26]

Number of subjects

79 pilots; 366 non pilots

Cumulated dose

0 - 48 mSv

Results

Association with NC, not with tobacco or UVB; no eye lens dose; doses>50 years not considered

Radiology technicians

Chodick et al. 2008 [27]

Number of subjects

35,705

Mean age at exposure

24-44 years at inclusion

Mean age at eye examination

Followed for 20 years

Median eye lens dose

28.1 mGy

Results

ERR/1Gy=1.98 (ns) HR high doses (60mGy) vs. low doses (5mGy) =1.18 (0.99-1.4)

Interventional cardiologists

Vano et al. 2010 [29]

Ciraj-Bjelac et al. 2010 [30]

Number of subjects

58 IC; 93 NE

56 IC; 22 NE

Mean age at  eye examination

IC=46 years; NE=41 years

IC=42 years; NE=44 years

Range  eye lens dose

0.1-27 Gy

0.02-43 Gy

Results

OR for PSC=3.2 (38%vs 12%)

OR for PSC=5.7 (52% vs. 9%)

PSC: posterior subcapsular cataract; CC: Cortical cataract; NC: Nuclear cataract; E: exposed; NE: Not exposed; IC:Interventional cardiologists
Table 3: Studies on occupational exposure.