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Diss Factsheets

Administrative data

Endpoint:
eye irritation: in vivo
Type of information:
experimental study
Adequacy of study:
other information
Study period:
July 1994
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1994
Report date:
1994

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 405 (Acute Eye Irritation / Corrosion)

Test material

Constituent 1
Reference substance name:
(±)-13-ethyl-3-methoxygona-2,5(10)-dien-17ß-ol
IUPAC Name:
(±)-13-ethyl-3-methoxygona-2,5(10)-dien-17ß-ol

Test animals / tissue source

Species:
rabbit
Strain:
New Zealand White

Test system

Vehicle:
unchanged (no vehicle)
Controls:
other: the left eye, which remained untreated, served as control.
Amount / concentration applied:
10 mg
Duration of treatment / exposure:
test substance remained in the eye (eye was not rinsed)
Observation period (in vivo):
6 days
Number of animals or in vitro replicates:
3 females

Results and discussion

In vivo

Resultsopen allclose all
Irritation parameter:
cornea opacity score
Basis:
mean
Time point:
other: 24, 48, 72 h
Score:
0
Max. score:
4
Irritation parameter:
iris score
Basis:
mean
Time point:
other: 24, 48, 72 h
Score:
0
Max. score:
2
Irritation parameter:
conjunctivae score
Remarks:
reddening
Basis:
mean
Time point:
other: 24, 48, 72 h
Score:
0.11
Max. score:
3
Reversibility:
fully reversible
Irritation parameter:
conjunctivae score
Remarks:
swelling
Basis:
mean
Time point:
other: 24, 48, 72 h
Score:
0
Max. score:
4

Any other information on results incl. tables

Table 1: Results of the study

    

 Irritant effects (score)         

Animal no. (sex)

 Irritation parameter

 24 h 48 h  72 h  Mean scores

 1 (F)

 Cornea

 0 0  0  0.0
 

 Iris

 0 0 0 0.0
 

 Conjunctiva (reddening)

 0 0 0 0.0
 

 Conjunctiva (swelling)

 0 0 0 0.0

 2 (F)

 Cornea

 0 0 0 0.0
   Iris 0 0 0 0.0
   Conjunctiva (reddening) 1 0 0 0.33
   Conjunctiva (swelling) 0 0 0 0.0

 3 (F)

  Cornea 0 0 0 0.0
   Iris 1 1 1 0.0
   Conjunctiva (reddening) 0 0 0 0.0
   Conjunctiva (swelling) 0 0 0 0.0

The control eyes were without findings.

Local findings in all animals after treatment with the test substance on application day were: slight to moderate secretions, slight reddenings and vessel injections of the conjunctivae and slight to moderate swellings of the conjunctivae (2 animals). The single administration of 100 mg test substance into the conjunctival sac of the right eye led in 1 rabbit to slight reddening of the conjunctivae 24 h after application.

Applicant's summary and conclusion

Executive summary:

In a local tolerance test on the rabbit eye according to OECD TG 405 a single application of the test substance into the conjunctival sac provoked slight transient irritation in 1 out of 3 rabbits. The findings were fully reversible by day 2 after administration. TAccording to EU classification criteria the test substance need not be labelled as an eye irritant.