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Table 6 Mean opacity and permeability values and corresponding in vitro irritation score (IVIS) of 16 OECD representative nanomaterials (and the Ag NM dispersant) determined in the BCOP assay

From: Eye irritation testing of nanomaterials using the EpiOcularâ„¢ eye irritation test and the bovine corneal opacity and permeability assay

Test material

TiO2 NM-100

TiO2 NM-101

TiO2 NM-102

TiO2 NM-103

TiO2 NM-104

TiO2 NM-105

ZnO NM-110 (1st test run)

ZnO NM-110 (2nd test run)

ZnO NM-111

SiO2 NM-200

SiO2 NM-203

CeO2 NM-211

CeO2 NM-212

Ag NM-300 K (1st test run)

Ag NM-300 K (2nd test run)

Ag dispersant NM-300 K DIS (1st test run)

Ag dispersant NM-300 K DIS (2nd test run a)

MWCNT NM-400

MWCNT NM-401

MWCNT NM-402

Volume or mass applied

750 μL; 20 % (w/v)

750 μL; 20 % (w/v)

750 μL; 20 % (w/v)

750 μL; 20 % (w/v)

750 μL; 20 % (w/v)

750 μL; 20 % (w/v)

750 μL; 20 % (w/v)

750 μL; 20 % (w/v)

33 mg; undiluted

750 μL; 20 % (w/v)

750 μL; 20 % (w/v)

750 μL; 20 % (w/v)

750 μL; 20 % (w/v)

750 μL; undiluted

750 μL; undiluted

750 μL; undiluted

750 μL; undiluted

750 mg; 20 % (w/w)

48 mg. undiluted

750 mg; 20 % (w/w)

Mean opacity value ± SD

4.2 ± 7.2

24.7 ± 4.8

10.7 ± 6.1

23.8 ± 6.8

10.7 ± 4.3

2.2 ± 2.8

46.6 ± 9.1

15.0 ± 3.0

1.1 ± 1.1

9.7 ± 3.4

11.8 ± 3.7

18.0 ± 9.9

17.2 ± 5.4

123.9 ± 80.6

2.8 ± 0.6

43.9 ± 16.3

66.6 ± 2.9

−4.7 ± 2.2

−5.4 ± 0.7

−3.8 ± 0.8

Mean permeability value ± SD

−0.01 ± 0.00

0.22 ± 0.31

−0.12 ± 0.01

0.14 ± 0.18

0.04 ± 0.04

0.00 ± 0.00

0.20 ± 0.10

0.08 ± 0.12

0.01 ± 0.03

0.02 ± 0.05

0.03 ± 0.05

0.03 ± 0.04

−0.02 ± 0.01

0.14 ± 0.08

3.46 ± 0.46

0.08 ± 0.03

0.48 ± 0.56

−0.01 ± 0.00

0.01 ± 0.03

−0.01 ± 0.01

IVIS ± SD

4.1 ± 7.1

28.0 ± 4.2

10.6 ± 6.2

25.9 ± 5.7

11.2 ± 4.0

2.2 ± 2.8

49.5 ± 10.7

16.1 ± 4.7

1.2 ± 0.7

10.0 ± 4.0

12.2 ± 2.9

18.5 ± 10.5

16.9 ± 5.3

126.0 ± 81.8

54.7 ± 6.3

45.0 ± 16.7

73.7 ± 11.3

−4.8 ± 2.3

−5.3 ± 0.4

−3.9 ± 0.7

  1. Ag NM-300 K and Ag NM-300 K DIS were tested using the BCOP treatment protocol for liquids (10 min test substance exposure, 2 h post-exposure incubation) while all others were tested according to the treatment protocol for solids (4 h test substance exposure without further post-incubation)
  2. Abbreviations: IVIS In vitro irritation score, NC negative control, PC positive control, SD standard deviation
  3. a Only two corneas were treated, since the available test substance was not sufficient to treat a third cornea