Possibility of double vision: two methods of assessment (version 1)
Research type
Research Study
Full title
Is there a difference in the density of suppression when measured at the uncorrected angle (diplopia point) and corrected angle (fovea) in strabismic suppression.
IRAS ID
138578
Contact name
Alison Y Firth
Contact email
Sponsor organisation
The University of Sheffield
Research summary
This study is about the assessment of patients who have had an eye that is deviating (squint) from childhood and do not get double vision in their casual seeing conditions. The assessment of the likelihood of getting double vision will be carried out with the ‘Sbisa bar’. The ’Sbisa bar’ is a piece of equipment consisting of pink filters which progressively increase in density with a numerical value of 1-17; filter 1 is the lightest filter and filter 17 is the darkest filter. The ’Sbisa bar’ assessment can be carried out using two different methods. The first method is carried out with the eye in its habitual seeing position and the second method where a straightened position of the eye is simulated with the use of ophthalmic prisms. The Sbisa bar results of these two methods will be compared to see if there is a significant difference. In addition to this a retrospective review of the case notes for those patients who went on to have corrective squint surgery will be carried out.
REC name
East Midlands - Leicester Central Research Ethics Committee
REC reference
13/EM/0386
Date of REC Opinion
15 Oct 2013
REC opinion
Further Information Favourable Opinion