Dr Leon N. Davies PhD FCOptom FAAO SFHEA

Reader in Optometry & Physiological Optics

Director of Research, ORG

Ageing Eye Cluster Leader, ARCHA

Life and Health Sciences
Aston University
Birmingham B4 7ET
United Kingdom

Email: L.N.Davies@aston.ac.uk 
Telephone: +44 (0) 121 204 4152
Fax: +44 (0) 121 204 4048  


Research Group

 Ophthalmic Research Group (ORG)

Research Centre

Aston Research Centre for Healthy Ageing (ARCHA)  

Link to my Google Scholar profile

Dr Leon Davies
  • 2013 to date: Reader in Optometry & Physiological Optics, Aston University
  • 2014 to date: Honorary Fellowship, School of Optometry, The Hong Kong Polytechnic University
  • 2009-2013: Senior Lecturer in Optometry, Aston University
  • 2007-2010: Honorary Visiting Research Fellow, Bradford School of Optometry, University of  Bradford
  • 2007-2008: Clinical Editor, Optometry Today
  • 2006-2007: Honorary Clinical Research Fellow, Birmingham Heartlands Hospital NHS Trust
  • 2005-2009: Lecturer in Optometry, Aston University 
  • 2015: SFHEA, Senior Fellowship of the Higher Education Academy
  • 2012: FCOptom, Fellowship of the College of Optometrists
  • 2008: FHEA, Fellowship of the Higher Education Academy
  • 2008: PGCertHE, Aston University
  • 2005: FAAO, Fellowship of the American Academy of Optometry
  • 2004: PhD in Ophthalmic Optics, Aston University
  • 2001: MCOptom, Membership of the College of Optometrists
  • 2001: General Optical Council registration
  • 2000: BSc (Hons) Optometry with First Class Honours, Aston University 
  • 2010: Neil Charman Medal for Research 
  • 2008: College of Optometrists Research Fellowship Award
  • Module leader: Accommodation and Presbyopia (DOptom/ DOphSc; OP4AAP)
  • Lecturer: Investigative Ophthalmic Science (DOptom/ DOphSc; OP4IOS)
  • Supervisor: Elective Studies (BSc Optometry; OP3ES1)
  • Lecturer and supervisor: Further Investigative Techniques (BSc Optometry; OP2FIT)
  • Supervisor: Primary Optometric Examination (BSc Optometry; OP2POE)
  • Module leader: Basic Investigative Techniques (BSc Optometry; OP1BIT)
  • Physiological optics of accommodation and presbyopia
  • Intraocular lens (IOL) technology
  • Ocular biometry
  • Ophthalmic instrumentation
  • Myopia
  • Visual function following stroke

Over £1.5 million in research grants awarded from sources including: Abbott (Advanced) Medical Optics, Astellas Pharma (Japan), Bausch and Lomb (USA), Birmingham City University, Birmingham Optical Group, Central Local Optical Committee (LOC), College of Optometrists, EPSRC, EU, Hoya Corporation (Japan), Johnson & Johnson, Lenstec (USA), Technology Strategy Board, Ten Alps, Visioncare Research Ltd and the Visual Research Trust.

Current research funding

2015-2019: £455,480 EC Marie Sklodowska-Curie Actions (MSCA) Innovative Training Networks (ITN), European Dry Eye Network (EDEN)

DOptom (principal supervisor): Chee Horng Ong (January 2015 to date). Project: Efficacy of multifocal soft contact lenses on asthenopic orthophoric and esophoric myopes with lag of accommodation.

PhD (principal supervisor): Parminder Randhawa (October 2013 to date). Project: Physiological and pharmacological manipulation of the in vivo human ciliary muscle (funded by Aston University).

PhD (co-supervisor): Naomi Saigal (October 2013 to date). Project: The role of altered ciliary muscle morphology in myopia and accommodation (funded by The College of Optometrists).

DOptom (co-supervisor): Dirk Booysen (August 2013 to date). Project: Tonometry and biomechanics of the cornea in contact lens wear.

PhD (principal supervisor): Dr Deborah Laughton (January 2012 to September 2014). Project: Optical and structural adaptation during incipient presbyopia (funded by The College of Optometrists).

Research Associate (principal supervisor): Dr Ian Beasley (August 2012 to March 2014). Project: Developing an evidence base for the impact of prescribing optical appliances on the onset and progression of presbyopia (funded by the Central LOC).

PhD (co-supervisor): Dr Ben Coldrick (July 2010 to July 2013). Project: Modelling the human accommodation system using finite element analysis (funded by the EPSRC and Abbott Medical Optics).

DOptom (principal supervisor): Dr Ian Beasley (October 2009 to September 2012). Project: Susceptibility to pattern glare and the effect of spectral filters on rate of reading and visual search in stroke patients.

PhD (co-supervisor): Dr Gurpreet Bhogal (October 2009 to September 2012) Project: Visual function in pseudophakic patients (funded by Rayner, UK).

MSc (principal supervisor - external): Noelia Segui (Universitat Politècnica de Catalunya, Spain; February 2012 to June 2012). Project: Profiling biometric changes during disaccommodation in emmetropes and myopes.

PhD (co-supervisor): Dr Sarah Smith (April 2008 to January 2012) Project: Service quality in optometric practice (funded by Birmingham Optical Group, UK).

PhD (external supervisor): Dr Alison Alderson (University of Bradford; October 2007 to August 2011). Project: Structural and functional aspects of myopia in young adults: an investigation of nearwork-induced transient myopia and accommodation in relation to refractive stability (funded by the College of Optometrists, UK).

PhD (co-supervisor): Dr Phillip Buckhurst (October 2007 to January 2011). Project: Evaluation of modern intraocular lenses (funded by Aston University).

PhD (principal supervisor): Dr Amy Louise Sheppard (October 2007 to September 2010). Project: In vivo analysis of ocular morphological changes during phakic accommodation (funded by Bausch & Lomb, USA).

PhD (principal supervisor): Dr George Anthony Gibson (October 2005 to November 2008). Project: Theoretical and empirical evaluation of ocular accommodation in phakic and pseudophakic eyes (funded by the EPSRC and Bausch & Lomb, UK).

Research Fellow (co-supervisor): Dr Hannah Bartlett (2005 to 2007). Project: Ocular biometric correlates (funded by the Hoya corporation, Japan).

(40) Laughton, D. S., Coldrick, B. J., Sheppard, A. L. and Davies, L. N. (2015). A program to analyse optical coherence tomography images of the ciliary muscle. Contact Lens and Anterior Eye (DOI: 10.1016/j.clae.2015.05.007).

(39) Buckhurst, P. J., Naroo, S. A., Davies, L. N., Shah, S., Buckurst, H., Kingsnorth, A., Drew, T. and Wolffsohn, J. S. (2015). Tablet App Aston Halometer for the assessment of dysphotopsia. Journal of Cataract and Refractive Surgery (in press).

(38) Beasley, I. G., Laughton, D. S., Coldrick, B. J., Drew T. E., Sallah, M. and Davies L. N. (2013). Does rebound tonometer probe misalignment modify intraocular pressure measurements in human eyes? Journal of Ophthalmology 2013, Article ID 791084 http://dx.doi.org/10.1155/2013/791084

(37) Beasley, I. G. and Davies, L. N. (2013). The effect of spectral filters on visual search following strokePerception 42, 401-412.

(36) Beasley, I. G. and Davies, L. N. (2013). The effect of spectral filters on reading speed and accuracy following strokeJournal of Optometry http://dx.doi.org/10.1016/j.optom.2013.03.002

(35) Beasley, I. G. and Davies, L. N. (2013). Visual stress symptoms secondary to stroke alleviated with spectral filters and precision tinted ophthalmic lenses: a case report. Clinical and Experimental Optometry 96, 17-120.

(34) Buckhurst, P. J., Wolffsohn, J. S., Naroo, S. A., Davies, L. N., Bhogal, G., Kipuloti, A. and Shah, S. (2012). Multifocal intraocular lens differentiation using defocus curves. Investigative Ophthalmology and Visual Science 53, 3920-3926.

(33) Alderson, A., Davies, L. N., Mallen E. A. H. and Sheppard, A. L. (2012). A method for profiling biometric changes during disaccommodation. Optometry and Vision Science 89, 738-748

(32) Beasley, I. G. and Davies, L. N. (2012). Susceptibility to pattern glare following stroke. Journal of Neurology 259, 1832-1839

(31) Shah, S., Sheppard, A. L., Castle, J., Baker, D., Buckhurst, P. J., Naroo, S. A., Davies, L. N. and Wolffsohn, J. S. (2012). Refractive outcomes of laser epithelial keratomileusis for myopia, hyperopia and stigmatism using a 213 nm wavelength solid-state laser. Journal of Cataract and Refractive Surgery 38, 746-751.

(30) Buckhurst, P. J., Wolffsohn, J. S., Gupta, N., Naroo, S. A., Davies, L. N. and Shah, S. (2012). Development of a Questionnaire to assess the relative subjective benefits of presbyopia correction. Journal of Cataract and Refractive Surgery 38, 74-79.

(29) Wolffsohn, J.S., Sheppard, A. L., Vakani, S. and Davies, L.N. (2011). Accommodative amplitude required for sustained near work. Ophthalmic and Physiological Optics 31, 480-486.

(28) Sheppard, A. L., Evans, C. J., Singh, K. D., Wolffsohn, J. S., Dunne, M. C. M. and Davies, L. N. (2011). Three-dimensional magnetic resonance imaging of the phakic crystalline lens during accommodation. Investigative Ophthalmology and Visual Science 52, 3689-3697.

(27) Sheppard, A. L. and Davies, L. N. (2011). The effect of ageing on in vivo human ciliary muscle morphology and contractility. Investigative Ophthalmology and Visual Science 52, 1809-1816.

(26) Wolffsohn, J. S., Buckhurst, P. J., Davies, L. N., Naroo, S. A., Gibson, G. A., Gupta, N., Craig, J. and Shah, S. (2011). Evaluation of an open-field autorefractor’s potential to assess objective accommodation in pseudophakes. British Journal of Ophthalmology 95, 498-501.

(25) Armstrong, R. A., Davies, L. N., Dunne, M. C. M. and Gilmartin, B. (2011). Statistical guidelines for clinical studies of human vision. Ophthalmic and Physiological Optics 31, 123-136.

(24) Sheppard, A. L. and Davies, L. N. (2010). In vivo analysis of ciliary muscle morphological changes with accommodation and axial ametropia. Investigative Ophthalmology and Visual Science 51, 6882-6889.

(23) Wolffsohn, J. S., Davies, L. N., Gupta, N., Naroo S. A., Gibson G. A., Mihashi, T. and Shah S. (2010). Mechanism of action of the Tetraflex KH3500 ‘accommodative’ intraocular lens. Journal of Refractive Surgery 26, 858-62.

(22) Sheppard, A. L., Bashir, A., Wolffsohn, J. S. and Davies, L. N. (2010). Accommodating intraocular lenses: a review of design concepts, usage and assessment methods. Clinical and Experimental Optometry 93, 441-452.

(21) Buckhurst, P. J., Wolffsohn, J. S., Davies, L. N. and Naroo, S. A. (2010). Surgical correction of astigmatism during cataract surgery. Clinical and Experimental Optometry 93, 409-418.

(20) Buckhurst, P. J., Wolffsohn, J. S., Naroo, S. A. and Davies, L. N. (2010). Rotational and centration stability of an aspheric intraocular lens with a simulated toric design. Journal of Cataract and Refractive Surgery 36, 1523-1528.

(19) Davies, L. N., Dunne, M. C. M., Gibson, G. A. and Wolffsohn, J. S. (2010). Vergence analysis reveals the influence of axial distances on accommodation with age and ametropia. Ophthalmic and Physiological Optics 30, 371-378.

(18) Sheppard, A. L. and Davies, L. N. (2010). Clinical evaluation of the Grand Seiko Auto Ref/ Keratometer WAM-550. Ophthalmic and Physiological Optics 30, 143-151.

(17) Davies, L. N. and Mallen, E. A. H. (2009). Influence of accommodation and refractive status on the peripheral refractive profile. British Journal of Ophthalmology 93, 1186-90.

(16) Buckhurst, P. J., Wolffsohn, J. S. Shah, S., Naroo, S. A., Davies L. N. and Berrow, E. (2009). A new optical low coherence reflectometry device for ocular biometry in cataract patients. British Journal of Ophthalmology 93, 949-53.

(15) Davies, L. N., Wolffsohn, J. S. and Gilmartin, B. (2009). Autonomic correlates of ocular accommodation and cardiovascular function. Ophthalmic and Physiological Optics 29, 427-435.

(14) Sheppard, A. L., Dunne, M. C. M., Wolffsohn, J. S. and Davies, L. N. (2008). Theoretical evaluation of the cataract extraction-refraction-implantation techniques for intraocular lens power calculation. Ophthalmic and Physiological Optics 28, 568-576.

(13) Chisholm, C., Rauscher, F., Crabb, D., Davies, L. N., Dunne, M., Edgar, D., Harlow, A., James-Galton, M., Petzold, A., Phelps, N., Plant, G., Underwood, G., Viswanathan, A. and Barbur, J. (2008). Assessing Visual Fields for Driving in Patients with Paracentral Scotomata. British Journal of Ophthalmology 92, 225-230.

(12) Dunne, M. C. M., Davies, L. N. and Wolffsohn, J.S. (2007). Accuracy of cornea and lens biometry using Anterior Segment Optical Coherence Tomography. Journal of Biomedical Optics 12(6): 064023.

(11) Wolffsohn, J. S. and Davies, L. N. (2007). Recent advances in ocular imaging. Expert Review of Ophthalmology 2, 755-767.

(10) Gupta, N., Wolffsohn, J. S., Naroo, S. A., Davies, L. N., Gibson, G. A. and Shah, S. (2007). Development of a near activity visual questionnaire to assess accommodating intraocular lenses. Contact Lens and Anterior Eye 30, 134-143.

(9) Wolffsohn, J. S. and Davies, L. N. (2007). Advances in anterior segment imaging. Current Opinion in Ophthalmology 18, 32-38.

(8) Davies, L. N., Bartlett, H., Mallen, E. A. H. and Wolffsohn, J. S. (2006). Clinical evaluation of rebound tonometer. Acta Ophthalmologica Scandinavica 84, 206-209.

(7) Bartlett, H., Davies, L. N. and Eperjesi, F. (2005). The macular mapping test: a reliability study. BMC Ophthalmology 5, 18.

(6) Davies, L. N., Wolffsohn, J. S. and Gilmartin, B. (2005). Cognition, ocular accommodation, and cardiovascular function in emmetropes and late-onset myopes. Investigative Ophthalmology and Visual Science 46, 1791-1796.

(5) Logan, N. S., Davies, L. N., Mallen, E. A. H. and Gilmartin, B. (2005). Ametropia and ocular biometry in a United Kingdom university student population. Optometry and Vision Science 82, 261-266.

(4) Dunne, M. C. M., Davies, L. N., Mallen, E. A. H., Kirschkamp, T. and Barry, J. C. (2005). Non-invasive phakometric measurement of corneal and crystalline lens alignment in human eyes. Ophthalmic and Physiological Optics 25, 143-152.

(3) Bartlett, H., Davies, L. N. and Eperjesi, F. (2004). Reliability, normative data, and the effect of age-related macular disease on the Eger Macular Stressometer. Ophthalmic and Physiological Optics 24, 594-599.

(2) Davies, L. N., Bartlett, H. E. and Dunne, M. C. M. (2004). Cling film as a barrier against CJD in Goldmann-type applanation tonometry. Ophthalmic and Physiological Optics 24, 27-34.

(1) Davies, L. N., Mallen, E. A. H., Wolffsohn, J. S. and Gilmartin, B. (2003). Clinical evaluation of the Shin-Nippon NVision-K 5001/Grand Seiko 5100-K autorefractor. Optometry and Vision Science 80, 320-324.

Employable Graduates; Exploitable Research