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Eye irritation
Administrative data
- Endpoint:
- eye irritation: in vivo
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 24/11/2008 to 30/12/2008
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Study conducted to GLP in accordance with recognised guideline
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 009
- Report date:
- 2009
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
- GLP compliance:
- yes (incl. QA statement)
Test material
- Details on test material:
- No further information required.
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 Limited, Bicester, Oxon, UK.
- Age at study initiation: Twelve to twenty weeks old
- Weight at study initiation: 2.0 to 3.5 kg
- Housing: The animals were individually housed in suspended cages.
- Diet (e.g. ad libitum): Free access to food (2030 Teklad Global Rabbit diet supplied by Harlan Teklad, Blackthorn, Bicester, Oxon, UK) was allowed throughout the study.
- Water (e.g. ad libitum): Free access to mains drinking water was allowed throughout the study.
- Acclimation period: Minimum of 5 days
ENVIRONMENTAL CONDITIONS
- Temperature (°C): 17 to 23°C
- Humidity (%): 30 to 70%
- Air changes (per hr): The rate of air exchange was at least fifteen changes per hour
- Photoperiod (hrs dark / hrs light): Lighting was controlled by a time switch to give twelve hours continuous light (06:00 to 18:00) and twelve hours darkness.
Test system
- Vehicle:
- water
- Controls:
- yes, concurrent no treatment
- Amount / concentration applied:
- TEST MATERIAL
- Amount(s) applied:
A volume of 0.1 ml of the test material, which was found to weigh approximately 65 mg (as measured by gently compacting the required volume into an adapted syringe) was placed into the conjunctival sac of the right eye. - Duration of treatment / exposure:
- n/a
- Observation period (in vivo):
- Assessment of ocular damage/irritation was made approximately 1 hour and 24, 48 and 72 hours following treatment. Additional observations were made on Days 7, 14 and 21 to assess the reversibility of the ocular effects.
- Number of animals or in vitro replicates:
- 3 male rabbits
- Details on study design:
- REMOVAL OF TEST SUBSTANCE
- Washing (if done): Not specified
- Time after start of exposure: n/a
SCORING SYSTEM:
Using the numerical data obtained a modified version of the system described by Kay J H and Calandra J C (1962), J. Soc. Cosmet. Chem. 13, 281-289 and Draize J H (1977) "Dermal and Eye Toxicity Tests" In: Principles and Procedures for Evaluating the Toxicity of Household Substances, National Academy of Sciences, Washington DC p.48 to 49).
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:
- mean
- Time point:
- other: Mean overall score for 24, 48 and 72 hrs
- Score:
- 0
- Reversibility:
- other: No effects
- Irritation parameter:
- iris score
- Basis:
- mean
- Time point:
- other: Mean overall score for 24, 48 and 72 hrs
- Score:
- 0
- Reversibility:
- other: No effects
- Irritation parameter:
- conjunctivae score
- Remarks:
- (Redness)
- Basis:
- mean
- Time point:
- other: Mean overall score for 24, 48 and 72 hrs
- Score:
- 1
- Max. score:
- 2
- Reversibility:
- fully reversible within: 72 hrs
- Irritation parameter:
- chemosis score
- Basis:
- mean
- Time point:
- other: Mean overall score for 24, 48 and 72 hrs
- Score:
- 0.56
- Max. score:
- 1
- Reversibility:
- fully reversible within: 72 hrs
- Irritation parameter:
- conjunctivae score
- Remarks:
- (Discharge)
- Basis:
- mean
- Time point:
- other: Mean overall score for 24, 48 and 72 hrs
- Score:
- 0.33
- Max. score:
- 1
- Reversibility:
- fully reversible within: 48 hrs
- Irritant / corrosive response data:
- One treated eye appeared normal at the 14-day observation and the remaining treated eyes appeared normal at the 21-day observation.
- Other effects:
- Blue coloured staining of the fur was noted around all treated eyes throughout the study.
Blue coloured staining of the lower half of the cornea and on the nictitating membrane was noted in two treated eyes at the 24-hour observation, in all treated eyes at the 48, 72-hour and 7-day observations and persisted in two treated eyes at the 14-day observation. The staining did not affect evaluation of the ocular effects.
Any other information on results incl. tables
No corneal or iridial effects were noted during the study.
Moderate conjunctival irritation was noted in all treated eyes one and 24 hours after treatment with minimal conjunctival irritation noted at the 48-hour observation.
Blue coloured staining of the fur was noted around all treated eyes throughout the study.
Blue coloured staining of the lower half of the cornea and on the nictitating membrane was noted in two treated eyes at the 24-hour observation, in all treated eyes at the 48, 72-hour and 7-day observations and persisted in two treated eyes at the 14-day observation. The staining did not affect evaluation of the ocular effects.
Applicant's summary and conclusion
- Interpretation of results:
- slightly irritating
- Remarks:
- Migrated information (Mild Irritant) Criteria used for interpretation of results: other: Modified Kay and Calandra Classification system
- Conclusions:
- The test material produced a maximum group mean score of 12.0 and was classified as a MILD IRRITANT (Class 4 on a 1 to 8 scale) to the rabbit eye according to a modified Kay and Calandra classification system.
- Executive summary:
In an Acute eye irritation in the rabbit study (Harlan project number: 0959/0229) the test material was classified as a MILD IRRITANT (Class 4 on a 1 to 8 scale) to the rabbit eye according to a modified Kay and Calandra classification system.
The study was performed to assess the irritancy potential of the test material following a single application to the rabbit eye. The method was designed to meet the requirements of the following:
- OECD Guidelines for the Testing of Chemicals No. 405 "Acute Eye Irritation/Corrosion" (adopted 24 April 2002).
- Method B5 Acute Toxicity (Eye Irritation) of Commission Directive 2004173/EC.
Blue coloured staining of the lower half of the cornea and on the nictitating membrane was noted in two treated eyes at the 24-hour observation, in all treated eyes at the 48, 72-hour and 7-day observations and persisted in two treated eyes at the 14-day observation. The staining did not affect evaluation of the ocular effects.
No corneal or iridial effects were noted during the study.
Moderate conjunctival irritation was noted in all treated eyes one and 24 hours after treatment with minimal conjunctival irritation noted at the 48-hour observation.
One treated eye appeared normal at the 14-day observation and the remaining treated eyes appeared normal at the 21-day observation.
All animals showed expected gain in bodyweight during the study.
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