Registration Dossier

Administrative data

Endpoint:
eye irritation: in vivo
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP compliant guideline study, available as unpublished report, no restrictions, fully adequate for assessment.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2006
Report Date:
2006

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to
Guideline:
OECD Guideline 405 (Acute Eye Irritation / Corrosion)
Qualifier:
according to
Guideline:
EU Method B.5 (Acute Toxicity: Eye Irritation / Corrosion)
GLP compliance:
yes (incl. certificate)
Remarks:
RCC Ltd, 4452 Itingen, Switzerland

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid: particulate/powder
Remarks:
migrated information: powder
Details on test material:
- Name of test material (as cited in study report): FAT 40826/A
- Lot/batch No.: TZ 5604 BOP 01/06
- Expiration date: 1 February 2011
- Purity: Content of organic part (Na-salt): approx. 78%. Oligomers: 13%. Main component: approx. 48%.
- Stability of test item: Stable under storage conditions
- Storage conditions: At room temperature (range of 20 ± 5 °C) in a exsiccator.

Test animals / tissue source

Species:
rabbit
Strain:
New Zealand White
Details on test animals or tissues and environmental conditions:
TEST ANIMALS
- Source: Harlan Netherlands BV, Kreuzelweg 53, NL-5961 NM Horst / The Netherlands
- Age at treatment: 13-14 weeks
- Housing: Individually in stainless steel cages equipped with feed hoppers and drinking water bowls. Wood blocks (RCC Ltd, Füllinsdorf) and haysticks 4642 (batch no. 77/05, Provimi Kliba AG) were provided for gnawing.
- Diet: Pelleted standard Provimi Kliba 3418 rabbit maintenance diet ad libitum (batch no. 24/06) provided by Provimi Kliba AG, CH-4303 Kaiseraugst.
- Water: Community tap water from Füllinsdorf, ad libitum.
- Acclimation period: Under laboratory conditions after health examination. Only animals without any visual signs of illness were used for the study.

ENVIRONMENTAL CONDITIONS
- Temperature (°C): 17-23
- Humidity (%): 30-70
- Air changes (per hr): 10-15
- Photoperiod (hrs dark / hrs light): 12/12

Room temperature and humidity were monitored continuously and values outside of these ranges may have occasionally occurred, usually following room cleaning. These transient variations are considered not to have any influence on the study and, therefore, these data are not reported but are retained at RCC.

Test system

Vehicle:
unchanged (no vehicle)
Controls:
no
Amount / concentration applied:
0.1 g
Duration of treatment / exposure:
21 days
Observation period (in vivo):
up to 21 days
Number of animals or in vitro replicates:
1 male, 2 females
Details on study design:
TREATMENT:
The eyes of the animals were examined one day prior to test item administration. Animals with overt signs of ocular injury or irritation which may have interfered with the interpretation of the results were not used in the test. On the day of treatment, 0.1 g of FAT 40826/A was placed in the conjunctival sac of the left eye of each animal after gently pulling the lower lid away from the eyeball. The lids were then gently held together for about one second to prevent loss of test item. The right eye remained untreated and served as the reference control. The treated eyes were not rinsed after instillation.

OBSERVATIONS:
Viability/Mortality: Daily from acclimatization of the animals to the termination of test.
Clinical signs: Daily from acclimatization of the animals to the termination of test.
Body weights: At start of acclimatization, on the day of application and at termination of observation.

SCORING SYSTEM:
The eye reactions was assessed according to the numerical scoring system listed in the Commission Directive 2004/73/EC, April 29, 2004 at approximately 1, 24, 48 and 72 hours, as well as 7, 10, 14, 17, and 21 days after administration. Eye examinations were made with a Varta Cliptrix diagnostic-lamp (Roth AG, CH-4153 Reinach/Switzerland)

Results and discussion

In vivo

Resultsopen allclose all
Irritation parameter:
cornea opacity score
Basis:
mean
Time point:
other: 1, 24, 48, 72 hours and 7, 10, 14, 17, 21 days
Score:
0
Max. score:
4
Irritation parameter:
iris score
Basis:
mean
Time point:
other: 1, 24, 48, 72 hours and 7, 10, 14, 17, 21 days
Score:
0
Max. score:
2
Irritation parameter:
conjunctivae score
Basis:
mean
Time point:
other: 1 and 24 hours
Score:
1.33
Max. score:
3
Irritation parameter:
conjunctivae score
Basis:
mean
Time point:
other: 48 and 72 hours
Score:
0.67
Max. score:
3
Irritation parameter:
conjunctivae score
Basis:
mean
Time point:
other: 7 days
Score:
0.33
Max. score:
3
Irritation parameter:
conjunctivae score
Basis:
mean
Time point:
other: 10, 14, 17, 21 days
Score:
0
Max. score:
3
Irritation parameter:
chemosis score
Basis:
mean
Time point:
other: 1 hour
Score:
1.33
Max. score:
4
Irritation parameter:
chemosis score
Basis:
mean
Time point:
other: 24 hours
Score:
1
Max. score:
4
Irritation parameter:
chemosis score
Basis:
mean
Time point:
other: 48 hours
Score:
0.33
Max. score:
4
Irritation parameter:
chemosis score
Basis:
mean
Time point:
other: 72 hours and 7, 10, 14, 17, 21 days
Score:
0
Max. score:
4
Irritant / corrosive response data:
- No abnormal findings were observed in the cornea or iris of any animal at any of the measurement intervals. Slight to moderate reddening of the conjunctivae was noted in all animals at the 1- and 24- hour reading and persisted as slight reddening in two animals until the 72-hour and 7 day reading. Slight swelling (chemosis) of the conjunctivae was observed in one animal at the 1- and 24-hour reading. Slight swelling to marked swelling with half closed lids was also noted in one animal from the 1- to the 48-hour reading. The reddening of the sclerea was not assessable in two animals for the first 24 hours after treatment due to staining produced by the test item and chemosis. When assessable one animal showed a slight reddening of the sclerea at the 48-hour reading. Slight to moderate ocular discharge was seen in two animals at the 1-hour reading and persisted as slight ocular discharge in one animal at the 24-hour reading. No abnormal findings were observed in the treated eye of any animal 10 days after treatment.
- No corrosion of the cornea was observed at any of the reading times.
Other effects:
- Slight to marked red staining was observed in all animals 1 hour after instillation and persisted as slight to marked yellow staining until the 17-day reading in two animals.
- No clinical signs of systemic toxicity were observed in the animals during the study and no mortality occurred.
- The body weights of all rabbits were considered to be within the normal range of variability.

Applicant's summary and conclusion

Interpretation of results:
not irritating
Remarks:
Migrated information Criteria used for interpretation of results: EU
Conclusions:
The test substance is considered to be not irritating or corrosive to the rabbit eye.
Executive summary:

In a GLP compliant eye irritation study, performed according to OECD guideline 405, test substance (0.1 g) was placed in the conjunctional sac of the left eye of 3 New Zealand White rabbits. Scoring of irritation effects was performed approximately 1, 24, 48 and 72 hours, as well as 7, 10, 14, 17, and 21 days after test substance instillation. The test substance caused moderate, early-onset and transient ocular changes, such as reddening of the conjunctivae and sclerea, discharge and chemosis. These effects were reversible and were no longer evident 10 days after treatment. Slight to marked red staining was observed in all animals 1 hour after instillation and persisted as slight to marked yellow staining until 17 days after treatment in two animals. No abnormal findings were observed in the cornea or iris of any animal at any of the examinations. No corrosion was observed at any of the measuring intervals. Thus the test substance did not induce significant or irreversible damage to the rabbit eye.