Comparison of the safety of two antibiotics - levofloxacin and cefuroxime - when they are used at the end of cataract surgery for the prevention of post-operative infection

ISRCTN ISRCTN31806847
DOI https://doi.org/10.1186/ISRCTN31806847
Secondary identifying numbers SILC201109v2
Submission date
18/07/2009
Registration date
29/07/2009
Last edited
27/08/2014
Recruitment status
Stopped
Overall study status
Stopped
Condition category
Eye Diseases
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data
Record updated in last year

Plain English summary of protocol

Not provided at time of registration

Contact information

Mr David Spalton
Scientific

Department of Ophthalmology
St Thomas’ Hospital
Westminster Bridge Rd
London
SE1 7EH
United Kingdom

Study information

Study designSingle-centre prospective double-blind randomised controlled trial
Primary study designInterventional
Secondary study designRandomised controlled trial
Study setting(s)Hospital
Study typeTreatment
Participant information sheet Not available in web format, please use the contact details below to request a patient information sheet
Scientific titleComparison of the Safety of Intracameral Levofloxacin to intracameral Cefuroxime for the prevention of endophthalmitis in cataract surgery (SILC): a single-centre prospective double-blind randomised controlled trial
Study acronymSILC
Study objectivesThere is no difference in the safety of intracameral levofloxacin and cefuroxime when used during cataract surgery for the prevention of endophthalmitis.

On 14/06/2010 this record was updated to reflect changes in the protocol from SILC201109 version 1 to version 2. All updates can be found in the relevant field with the above update date. Please also note that the start and end dates of this trial have been changed from 01/09/2009 and 01/08/2010 to 01/10/2010 and 01/10/2011, respectively. The target number of participants was changed from 36 to 30.
Ethics approval(s)Local medical research ethics committee, 23/03/2010
Health condition(s) or problem(s) studiedCataract surgery
InterventionParticipants requiring bilateral cataract surgery will be randomised firstly to receive cefuroxime or levofloxacin for their first eye surgery. Their fellow/second eye surgery will subsequently take place 5 weeks later. Follow-up for each eye following surgery will be one day after surgery, 3 weeks after surgery and 3 months after surgery for each eye. Following listing for cataract surgery and recuitment to the study there are a total of six out-patient appointments and two day surgery visits.

Drug administration:
Drug 1: Cefuroxime
Dose: 1 mg in 0.1 mL
Site of injection: Intracameral (i.e., into anterior chamber of eye)
Frequency of administration: single dose at end of cataract surgery

Drug 2: Levofloxacin
Dose: 500 µg in 0.1 mL
Site of injection: Intracameral (i.e., into anterior chamber of eye)
Frequency of administration: single dose at end of cataract surgery

Updated 27/08/2014: This study was abandoned in 2012 as levofloxacin is unlicensed for intraocular use and we never achieved MHRA/pharma consent despite 2 years of applications.
Intervention typeDrug
Pharmaceutical study type(s)
PhasePhase II/III
Drug / device / biological / vaccine name(s)Levofloxacin, cefuroxime
Primary outcome measureCorneal endothelial cell count; a comparison will be made between pre-operative to post-operative results and between study groups (cefuroxime versus levofloxacin).
Secondary outcome measures1. Visual acuity
2. Intra-ocular inflammation (flare and cells)
3. Corneal thickness
4. Macular thickness

These parameters will be compared from pre-operative to post-operative results and between study groups (cefuroxime versus levofloxacin).
Overall study start date01/10/2010
Completion date01/10/2011
Reason abandoned (if study stopped)Objectives no longer viable

Eligibility

Participant type(s)Patient
Age groupOther
SexBoth
Target number of participants30
Key inclusion criteria1. Patients undergoing routine cataract surgery attending the ophthalmology outpatient clinic at St Thomas' Hospital
2. Aged 20-100 years
3. Male or female (of non-childbearing potential)
4. Clinically normal corneal and retinal examination
5. Past ocular history - no history of long-term ocular condition, long-term use of ocular medications or ocular surgery
6. Ability to comply with investigation and follow-up schedule
7. Patients must give informed written consent in order to participate in the study. Non-English speakers will be offered an interpreter. All consents will be witnessed.
Key exclusion criteria1. Unilateral cataract, very dense (brunescent or white) cataracts
2. Significant difference in corneal thickness, endothelial cell count/morphology or macular thickness of greater than 20% at baseline between the two eyes
3. Past ocular history in either eye of:
3.1. Pre-existing ocular conditions (glaucoma, retinal disease, uveitis, corneal disease)
3.2. Previous ocular surgery
3.3. Surgical complications in either eye
4. Diabetes requiring treatment
5. Medications: use of long-term topical eye drops with the exclusion of lubricant drops; use of tamsulosin (known to cause intra-operative floppy iris syndrome)
6. Allergies to fluoroquinolones, cephalosporins
7. Patients unable to give informed consent or are unable to understand the requirements of the trial
Date of first enrolment01/10/2010
Date of final enrolment01/10/2011

Locations

Countries of recruitment

  • England
  • United Kingdom

Study participating centre

Department of Ophthalmology
London
SE1 7EH
United Kingdom

Sponsor information

Guys' and St Thomas' Hospital NHS Foundation Trust (UK)
Hospital/treatment centre

Joint Clinical Trials Office
3rd Floor
Conybeare House
Great Maze Pond
London
SE1 7EH
England
United Kingdom

Website http://www.guysandstthomas.nhs.uk/
ROR logo "ROR" https://ror.org/00j161312

Funders

Funder type

Government

Guys' and St Thomas' Hospital NHS Foundation Trust (UK) - Funded internally

No information available

Results and Publications

Intention to publish date
Individual participant data (IPD) Intention to shareNo
IPD sharing plan summaryNot provided at time of registration
Publication and dissemination planNot provided at time of registration
IPD sharing plan