All Outputs (454)

Speed and accuracy of head- and eye-based aiming systems at high vertical acceleration (2004)
Journal Article
Ineson, J., Durnell, L., Ebbage, J. L., Jarrett, D. N., Neary, C., & Reed, M. A. (2004). Speed and accuracy of head- and eye-based aiming systems at high vertical acceleration. Aviation, Space, and Environmental Medicine, 75(5), 420-428

BACKGROUND The benefits of using a head tracker in a fast jet to aim weapons and control sensor direction have been amply demonstrated, but head direction is difficult to control at high G. An experiment was conducted to assess whether aiming usin... Read More about Speed and accuracy of head- and eye-based aiming systems at high vertical acceleration.

Forgetting and remembering: Group psychotherapy with people with dementia (2003)
Book Chapter
Cheston, R., Jones, K., & Gilliard, J. (2003). Forgetting and remembering: Group psychotherapy with people with dementia. In T. Adams, & J. Manthorpe (Eds.), Dementia Care: An Evidence Based Textbook (260). London: Edward Arnold (CRC Press)

Dementia presents challenges to all those working in health and social care. It is a progressive disease that affects the person with dementia, their families and friends, and the wider community. Dementia affects each person in a unique way. The cha... Read More about Forgetting and remembering: Group psychotherapy with people with dementia.

A profile of keratoconus in New Zealand (2003)
Journal Article
Owens, H., & Gamble, G. (2003). A profile of keratoconus in New Zealand. Cornea, 22(2), 122-125. https://doi.org/10.1097/00003226-200303000-00008

Purpose. To examine the characteristics and risk factors for keratoconus in a New Zealand population. Methods. A one-page questionnaire was designed and sent to optometrists and ophthalmologists in New Zealand. Eye care practitioners then issued ques... Read More about A profile of keratoconus in New Zealand.

A place to work it all out together (2002)
Book Chapter
Cheston, R., & Jones, K. (2002). A place to work it all out together. In S. Benson (Ed.), Dementia topics for the Millennium and Beyond. London: Hawker Publications

With more than 40 chapters selected from presentations made at Journal of Dementia Care conferences, this book offers an excellent snapshot of the diversity and quality of contemporary dementia care.

Effect of SoftPerm lens wear on corneal thickness and topography: A comparison between keratoconic and normal corneae (2002)
Journal Article
Owens, H., Watters, G., & Gamble, G. (2002). Effect of SoftPerm lens wear on corneal thickness and topography: A comparison between keratoconic and normal corneae. Clao Journal, 28(2), 83-87

Purpose. Complications related to contact lens-induced anoxia in the keratoconic eye are well documented, but the underlying mechanisms are poorly understood. This study compared topographical changes in corneal thickness and anterior corneal radius... Read More about Effect of SoftPerm lens wear on corneal thickness and topography: A comparison between keratoconic and normal corneae.

Tear spreading rates: Post-blink (2002)
Journal Article
Owens, H., & Phillips, J. R. (2002). Tear spreading rates: Post-blink. Advances in Experimental Medicine and Biology, 506, 1201-1204. https://doi.org/10.1007/978-1-4615-0717-8_170

The tear film plays a crucial role in the areas of contact lens wear and dry eye. However, despite its accessibility, there is no “gold-standard” test for assessing its functional quality. Current clinical tests are often poorly correlated with each... Read More about Tear spreading rates: Post-blink.

Spreading of the tears after a blink: Velocity and stabilization time in healthy eyes (2001)
Journal Article
Owens, H., & Phillips, J. (2001). Spreading of the tears after a blink: Velocity and stabilization time in healthy eyes. Cornea, 20(5), 484-487. https://doi.org/10.1097/00003226-200107000-00009

Purpose. To quantify the tear spreading velocity and stabilization time after blinks in healthy patients. Methods. Video recordings (magnification, ×130) were made of the movements of naturally occurring particles in the tear film while patients blin... Read More about Spreading of the tears after a blink: Velocity and stabilization time in healthy eyes.

Prevalence of myopia in Sherpa and Tibetan children in Nepal (1999)
Journal Article
Frith, M. J., Kinnear, R. F., Garner, L. F., Garner, L. F., Owens, H., Kinnear, R. F., & Frith, M. J. (1999). Prevalence of myopia in Sherpa and Tibetan children in Nepal. Optometry and Vision Science, 76(5), 282-285. https://doi.org/10.1097/00006324-199905000-00014

Background. Tibetan and Sherpa children living in Nepal share a common ancestry in Tibet and areas to the north of Nepal, but it is evident that these people experience widely contrasting educational and environmental conditions. The purpose of this... Read More about Prevalence of myopia in Sherpa and Tibetan children in Nepal.

Age dependence of ocular biometric measurements under cycloplegia with tropicamide and cyclopentolate (1998)
Journal Article
Owens, H., Garner, L. F., Yap, M. K., Frith, M. J., & Kinnear, R. F. (1998). Age dependence of ocular biometric measurements under cycloplegia with tropicamide and cyclopentolate. Clinical and Experimental Optometry, 81(4), 159-162. https://doi.org/10.1111/j.1444-0938.1998.tb06774.x

Background: Cyclopentolate continues to be the cycloplegic of choice for refracting young children, although many studies of ocular biometry promote the use of tropicamide. Methods: To clarify the role of drug type in biometric measurements, cyclople... Read More about Age dependence of ocular biometric measurements under cycloplegia with tropicamide and cyclopentolate.

Radius of curvature of the posterior surface of the cornea (1997)
Journal Article
Garner, L., Owens, H., Yap, M., Frith, M., & Kinnear, R. (1997). Radius of curvature of the posterior surface of the cornea. Optometry and Vision Science, 74(7), 496-498

The radius of curvature of the posterior surface of the cornea was measured in the vertical meridian for 120 children aged 6 to 17 years, using a Purkinje image method. The mean radius of curvature (+/-SD) was 6.42 +/- 0.31 mm, with a range from 5.62... Read More about Radius of curvature of the posterior surface of the cornea.

The effect of 3D virtual images on eye movement control (1996)
Journal Article
Neary, C. (1996). The effect of 3D virtual images on eye movement control. Investigative Ophthalmology & Visual Science, 36, 784

Purpose. To examine oculomotor responses to targets presented within a non-immersive stereoscopic (3D) display where accommodation and vergence cues to depth conflict. Methods. A liquid crystal frame sequential shuttering system was used to create th... Read More about The effect of 3D virtual images on eye movement control.

Oculomotor responses to perspective grid line drawings (1996)
Journal Article
Fulford, K., Findlay, J. M., & Neary, C. (1996). Oculomotor responses to perspective grid line drawings. Investigative Ophthalmology & Visual Science, 36, 783

Purpose. Can disconjugate eye movements be triggered by pictorial depth cues? If they could, this would facilitate eye pointing to three-dimensional displays. Method. Eye movement responses were measured as subjects shifted their gaze from a central... Read More about Oculomotor responses to perspective grid line drawings.

An evaluation of the keratoconic cornea using computerised corneal mapping and ultrasonic measurements of corneal thickness (1996)
Journal Article
Owens, H., & Watters, G. (1996). An evaluation of the keratoconic cornea using computerised corneal mapping and ultrasonic measurements of corneal thickness. Ophthalmic and Physiological Optics, 16(2), 115-123. https://doi.org/10.1046/j.1475-1313.1996.95000178.x

Reports indicate the presence of up to three independent cone shapes in keratoconus (round/oval/global) but the preponderance of one cone over another is unclear. This work evaluates keratoconic corneal topography and corneal thickness using videoker... Read More about An evaluation of the keratoconic cornea using computerised corneal mapping and ultrasonic measurements of corneal thickness.

Keratoconus in monozygotic twins in New Zealand (1995)
Journal Article
Walters, G. A., Owens, H., & Watters, G. (1995). Keratoconus in monozygotic twins in New Zealand. Clinical and Experimental Optometry, 78(4), 125-129. https://doi.org/10.1111/j.1444-0938.1995.tb00805.x

We report on a case of keratoconus in identical twins who were brought up in Christchurch, New Zealand. Videokeratoscopy using an EyeSysa (EyeSys Laboratories, Houston, Texas, USA) revealed not only marked differences in severity of keratoconus betwe... Read More about Keratoconus in monozygotic twins in New Zealand.

Helmet slippage during visual tracking: The effect of voluntary head movements (1993)
Journal Article
Neary, C., Bate, I. J., Heller, L. F., & Williams, M. (1993). Helmet slippage during visual tracking: The effect of voluntary head movements. Aviation, Space, and Environmental Medicine, 64(7), 623-30

The influence of visual tracking on head movement and on the head/helmet system was investigated for two different helmets (a motorcycle helmet and a flying helmet) under static laboratory conditions. Subjects visually refixated between pairs of illu... Read More about Helmet slippage during visual tracking: The effect of voluntary head movements.

Pharmacological effects on accommodative adaptation (1992)
Journal Article
Gilmartin, B., Bullimore, M., Rosenfield, M., Winn, B., & Owens, H. (1992). Pharmacological effects on accommodative adaptation. Optometry and Vision Science, 69(4), 276-284

We review the research which has attempted to determine whether the characteristics of autonomic innervation of ciliary smooth muscle are relevant to the process of accommodative adaptation. The effect of various topical autonomic drugs on the three... Read More about Pharmacological effects on accommodative adaptation.

Some visual, optometric and perceptual effects of coloured glasses (1991)
Journal Article
Wilkins, A., & Neary, C. (1991). Some visual, optometric and perceptual effects of coloured glasses. Ophthalmic and Physiological Optics, 11(2), 163-171. https://doi.org/10.1111/j.1475-1313.1991.tb00216.x

We examined 20 individuals who had worn coloured glasses (Irlen filters) for a period of at least 3 months and who claimed to find them beneficial. Sixteen had a history of reading difficulties. The performance of a variety of visual tasks was compar... Read More about Some visual, optometric and perceptual effects of coloured glasses.

The frequency characteristics of accommodative microfluctuations for central and peripheral zones of the human crystalline lens (1990)
Journal Article
Winn, B., Pugh, J., Gilmartin, B., & Owens, H. (1990). The frequency characteristics of accommodative microfluctuations for central and peripheral zones of the human crystalline lens. Vision Research,

Temporal variations in the nominally steady-state accommodation response can be characterized approximately by two principal regions of dominant activity: a low frequency region (LFR less than 0.6 Hz) and a high frequency region (HFR greater than 1.0... Read More about The frequency characteristics of accommodative microfluctuations for central and peripheral zones of the human crystalline lens.

The effect of pupil size on static and dynamic measurements of accommodation using an infra-red optometer (1989)
Journal Article
Winn, B., Pugh, J., Gilmartin, B., & Owens, H. (1989). The effect of pupil size on static and dynamic measurements of accommodation using an infra-red optometer. Ophthalmic and Physiological Optics,

The study examines to what degree the output of the Canon Auto-ref R1 infra-red (IR) optometer is affected by variations in pupil size for both static measurement of refractive error and for continuous recording of accommodation when switched to its... Read More about The effect of pupil size on static and dynamic measurements of accommodation using an infra-red optometer.

The effect of high frequency flicker on accommodation (1989)
Journal Article
Neary, C. (1989). The effect of high frequency flicker on accommodation. Ophthalmic and Physiological Optics, 9(4), 440-446. https://doi.org/10.1111/j.1475-1313.1989.tb00949.x

Monocular accommodation was measured by a laser optometer while two subjects viewed a letter matrix target illuminated by steady or intermittent (300, 100, 50 and 25 Hz) light and presented at a number of optical distances (0.5, 1.5, 2.5, 3.5 and 4.5... Read More about The effect of high frequency flicker on accommodation.