ISRCTN ISRCTN80219391
DOI https://doi.org/10.1186/ISRCTN80219391
Protocol serial number Version 1
Sponsor University of Leicester (UK)
Funder University of Leicester (UK)
Submission date
08/07/2010
Registration date
11/08/2010
Last edited
02/06/2015
Recruitment status
No longer recruiting
Overall study status
Completed
Condition category
Eye Diseases
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data

Plain English summary of protocol

Not provided at time of registration

Contact information

Prof Irene Gottlob
Scientific

Ophthalmology Group
University of Leicester
Robert Kilpatrick Clinical Sciences Building (RKCSB)
Leicester
LE2 7LX
United Kingdom

Phone +44 (0)116 258 6291
Email ig15@le.ac.uk

Study information

Primary study designInterventional
Study designRandomised single-centre unmasked cross-over study
Secondary study designRandomised cross over trial
Study type Participant information sheet
Scientific titleA quantitative study comparing hard and soft contact lenses to spectacles on changes in nystagmus oscillations
Study objectivesOur hypothesis is that nystagmus can be improved with contact lens wearing. The specific research questions are:
1. Do contact lenses reduce nystagmus and improve vision compared to spectacle wearing?
2. Are hard contact lenses better than soft contact lenses for reducing nystagmus and improving vision in nystagmus?
Ethics approval(s)Leicestershire, Northamptonshire and Rutland Research Ethics Committee 1, 06/07/2010, ref: 10/H0406/40
Health condition(s) or problem(s) studiedNystagmus
InterventionPatients will take part in the trial for a total duration of 8 weeks. This will comprise of 2 weeks of spectacle wear followed by 2 weeks of hard or soft contact lens wear. The next 2 weeks the patients will be wearing the opposite type of contact lens to those prescribed previously and then finally 2 weeks of spectacle wear again. Details of each visit are below:

Visit 1: Optimal refraction determined and glasses prescribed and contact lenses fitted and ordered followed by EXAMINATION 1
Day 1 - 14: Spectacle wearing (minimum of 14 days)
Visit 2 (day 14): EXAMINATION 2 followed by contact lens type 1
Day 15 - 28: Contact lens type 1 wearing
Visit 3 (day 28): EXAMINATION 3 followed by contact lens type 2
Day 29 - 42: Contact lens type 2 wearing
Visit 4 (day 42): EXAMINATION 4 followed by spectacle wearing
Day 43 - 56: Spectacle wearing
Visit 5 (day 56): EXAMINATION 5
Intervention typeOther
Primary outcome measure(s)

Changes in nysatgmus intensity measured with eye movement recordings, measured at baseline, day 14, day 28, day 42 and day 56.

Key secondary outcome measure(s)

Measured at baseline, day 14, day 28, day 42 and day 56:
1. Changes in LogMAR (chart) visual acuity at 4M (with head free)
2. Changes in LogMAR (chart) visual acuity at 0.4M (with head free)
3. Change in gaze dependant visual acuity at 4M
4. Change in nystgamus intensity, NAFX function and reading speed will be evaluated from the eye movement recordings at different fixation points across the horizontal plane
5. Subjective changes in visual function evaluated with the VFQ25

Completion date01/09/2012

Eligibility

Participant type(s)Patient
Age groupAdult
SexAll
Target sample size at registration28
Key inclusion criteriaInfantile nystagmus over the age of 16 years, either sex
Key exclusion criteria1. Currently involved in surgical or pharmacological trials for the treatment of nystagmus
2. Previous corneal trauma or intolerence to contact lens wearing
Date of first enrolment01/09/2010
Date of final enrolment01/09/2012

Locations

Countries of recruitment

  • United Kingdom
  • England

Study participating centre

University of Leicester
Leicester
LE2 7LX
United Kingdom

Results and Publications

Individual participant data (IPD) Intention to shareNo
IPD sharing plan summary
IPD sharing plan

Study outputs

Output type Details Date created Date added Peer reviewed? Patient-facing?
Results article results 01/09/2014 Yes No
Participant information sheet Participant information sheet 11/11/2025 11/11/2025 No Yes