| EPSRC Reference: |
EP/D036550/1 |
| Title: |
The role of ocular aberrations and retinal image quality in accommodation response accuracy |
| Principal Investigator: |
Mallen, Professor E |
| Other Investigators: |
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| Department: |
Faculty of Life Sciences |
| Organisation: |
University of Bradford |
| Scheme: |
First Grant Scheme Pre-FEC |
| Starts: |
01 May 2006 |
Ends: |
30 April 2008 |
Value (£): |
120,426
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Summary on Grant Application Form |
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SummaryMyopia (short-sightedness) is an increasingly common visual problem, caused principally by excessive axial expansion (i.e. growth along the front to back axis) of the eye. The condition blurs distance vision. Research carried out to date shows that genetics (i.e. inheritance of myopia from parents to children) plays a major role in the onset of myopia, but there is an additional influence from the visual environment. Studies of the effect of the visual environment have shown that people doing nearwork-intensive jobs (e.g. microscope users) are more likely to develop myopia than those in occupations where their vision is mainly focused at distance (e.g. professional drivers). The exact link between near vision and the development of myopia is not yet known.This research project aims to investigate the effect of wavefront aberrations (errors in the focusing of a light source as it leaves the eye having been reflected from the retina) in people without myopia, with stable myopia, and with increasing myopia. An instrument (an adaptive optics system) will be constructed to measure the wavefront aberrations of the eye. The instrument will have the added facility of being able to manipulate the wavefront aberrations (e.g. totally correct the wavefront error, or increase the wavefront error). The way in which the eye focuses for near vision will be recorded with the modified wavefront aberrations.When an eye views white light source, the optics of the eye split up the white light into its component colours (longitudinal chromatic aberration). A number of modern artificial light sources have outputs that peak at specific wavelengths. This is particularly apparent in fluorescent lamps. It may be the case that the choice of lamp selected to illuminate a near vision task has influence on the ability of the eye to focus accurately. This project will measure the ability of the eye to focus different wavelengths of light from a variety of artificial sources. The work will then be extended to measure the error of eye focus during near tasks under different light sources.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.brad.ac.uk |