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Diss Factsheets

Toxicological information

Eye irritation

Currently viewing:

Administrative data

Endpoint:
eye irritation: in vivo
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2013
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP compliant guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2013
Report date:
2014

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
OECD Guideline 405 (Acute Eye Irritation / Corrosion)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method B.5 (Acute Toxicity: Eye Irritation / Corrosion)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EPA OPPTS 870.2400 (Acute Eye Irritation)
Deviations:
no
GLP compliance:
yes (incl. QA statement)

Test material

Constituent 1

Test animals / tissue source

Species:
rabbit
Strain:
New Zealand White
Details on test animals or tissues and environmental conditions:
TEST ANIMALS
- Source: Harlan Laboratories UK Ltd., Leicestershire, UK
- Age at study initiation: 12 -20 weeks
- Weight at study initiation: 2.26 -2.65 kg
- Housing: individually in suspended cages
- Diet (e.g. ad libitum): 2930C Teklad Global Rabbit diet (Harlan Laboratories UK Ltd., Oxon, UK), ad libitum
- Water (e.g. ad libitum): drinking water, ad libitum
- Acclimation period: at least 5 days

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

IN-LIFE DATES: From: 2. 12. To: 16.12.2013

Test system

Vehicle:
unchanged (no vehicle)
Controls:
not required
Amount / concentration applied:
TEST MATERIAL
- Amount(s) applied (volume or weight with unit): 0.1 mL (volume) which weighs approx. 67 mg

Duration of treatment / exposure:
eye were not rinsed
Observation period (in vivo):
1 hour post application
24 hours post application
48 hours post application
72 hours post application
7 days post application
Number of animals or in vitro replicates:
3
Details on study design:
REMOVAL OF TEST SUBSTANCE
- Washing (if done): not done

SCORING SYSTEM:

A. CORNEA
Degree of opacity (most dense area used)
No opacity ...................................................................................................................0
Scattered or diffuse areas, details of iris clearly visible........................................1
Easily discernible translucent areas, details of iris slightly obscured................2
Opalescent areas, no details of iris visible , size of pupil barely discernible ....3
Opaque, iris invisible, ulzeration ..............................................................................4

Area of Cornea involoved (most dense area used)
One quarter (or less) but not zero.............................................................................1
Greater than one quarter but less than half............................................................ 2
Greater than half but less than three quarters........................................................3
Greter than three quarters, up to whole area..........................................................4

IRIS
Normal ......................................................................................................................... 0
Folds above normal , congestion, swelling, circumcorneal injection (any of all of these or combination of any thereof); iris still reacting to light
(sluggish reaction is positive) ......................... .........................................................1
No reaction to light, haemorrhage, gross destruction (any or all of these) ......2

CONJUNCTIVAE
A. Redness
Blood vessels normal...............................................................................................................0
Blood vessels definitely injected above normal ................................................................. 1
More diffuse, deeper crimson red, individual blood vessels not easily discernible .....2
Diffuse beefy red......................................................................................................................3

B. Chemosi s (refers to palpebral and bulbar conjunctivae)
No swelling .........................................................................................0
Any swelling above normal (includes nictitating membran) ..... 1
Obvious swelling with partial eversion of l i d s ...........................2
Swelling with lids about half closed ................................................3
Swelling with lids half closed to completely closed.......................4

C. Discharge
No discharge...............................................................................................................................0
Any discharge above normal....................................................................................................1
Discharge with moistening of the lids and hairs just adjacent to lids................................2
Discharge with moistening of the lids and hairs a considerable area around the eye....3


TOOL USED TO ASSESS SCORE: Examination of the eye was facilitated by the use of the light source from a standard ophthalmoscope.

Results and discussion

In vivo

Resultsopen allclose all
Irritation parameter:
cornea opacity score
Basis:
animal #1
Time point:
other: 24, 48, 72 hours
Score:
0
Max. score:
4
Irritation parameter:
cornea opacity score
Basis:
animal #2
Time point:
other: 24, 48, 72 hours
Score:
0
Max. score:
4
Irritation parameter:
cornea opacity score
Basis:
animal #3
Time point:
other: 24, 48, 72 hours
Score:
0
Max. score:
4
Irritation parameter:
iris score
Basis:
animal #1
Time point:
other: 24, 48, 72 hours
Score:
0
Max. score:
2
Irritation parameter:
iris score
Basis:
animal #2
Time point:
other: 24, 48, 72 hours
Score:
0
Max. score:
2
Irritation parameter:
iris score
Basis:
animal #3
Time point:
other: 24, 48, 72 hours
Score:
0
Max. score:
2
Irritation parameter:
conjunctivae score
Basis:
animal #1
Time point:
other: 24, 48, 72 hours
Score:
1.7
Max. score:
3
Reversibility:
fully reversible within: 7 days
Irritation parameter:
conjunctivae score
Basis:
animal #2
Time point:
other: 24, 48, 72 hours
Score:
0.7
Max. score:
3
Reversibility:
fully reversible within: 72 hours
Irritation parameter:
conjunctivae score
Basis:
animal #3
Time point:
other: 24, 48, 72 hours
Score:
1.7
Max. score:
3
Reversibility:
fully reversible within: 7 days
Irritation parameter:
chemosis score
Basis:
animal #1
Time point:
other: 24, 48, 72 hours
Score:
0.7
Max. score:
4
Reversibility:
fully reversible within: 72 hours
Irritation parameter:
chemosis score
Basis:
animal #2
Time point:
other: 24, 48, 72 hours
Score:
0.3
Max. score:
4
Reversibility:
fully reversible within: 48 hours
Irritation parameter:
chemosis score
Basis:
animal #3
Time point:
other: 24, 48, 72 hours
Score:
0.7
Max. score:
4
Reversibility:
fully reversible within: 72 hours
Irritant / corrosive response data:
No corneal effects were noted during the study. Iridial inflammation was noted in two treated eyes one hour after treatment. Moderate conjunctival irritation was noted in all treated eyes one hour after treatment. Moderate conjunctival irritation was noted in two treated eyes and minimal conjunctival irritation was noted in one treated eye at the 24-hour observation. Moderate conjunctival irritation was noted in one treated eye with minimal conjunctival irritation noted in two treated eyes at the 48-hour observation. Minimal conjunctival irritation was also noted in two treated eyes at the 72-hour observation.
One treated eye appeared normal at the 72-hour observation and two treated eyey appeared normal at the 7-day observation.
No corrosive effects were noted during the study. The test item did not induce significant or irreversible damage to the rabbit eye.
Other effects:
No clinical signs of toxicity were noted during the study. All animals showed expected gain in body weight during the study.

Applicant's summary and conclusion

Interpretation of results:
not irritating
Remarks:
Migrated information Criteria used for interpretation of results: EU
Conclusions:
According to the findings in this study the substance does not meet the criteria for classification laid down in the EU Classification Labelling and Packaging Regulation (1272/2008/EC).
Executive summary:

The substance was tested for its eye irritant properties in 3 New Zealand White rabbits. The study was performed according to OECD Guideline 405. Effects on conjunctivae (redness and swelling) were observed in all animals one hour after application. These signs decreased significantly within 72 hours and were fully reversible within 7 days.

According to the findings in this study the substance does not meet the criteria for classification laid down in the EU Classification Labelling and Packaging Regulation (1272/2008/EC).