Proliferative vitreoretinopathy, a potentially blinding condition, involves excessive proliferation of retinal pigment epithelium (RPE) cells and is the main complication following retinal detachment (RD). Complicated cases of RD are treated with silicone oil (SiO) tamponades wh…
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Uveal melanoma (UM) is the most common intraocular malignancy in adults. Despite successful ocular treatment, about 50% of patients succumb to metastatic dissemination, which occurs haematogenously and mainly affects the liver. On the basis of clinical, histopathological and gen…
The purpose of this thesis was to investigate the micro- and nanostructural changes of the optic nerve head (ONH) regions, namely lamina cribrosa (LC), peripapillary sclera (ppsclera) and region of insertion (RoIns) as a function of age and glaucoma. The microstructure of ageing…
In the antisaccade task participants are required to saccade to the mirror image location of a sudden onset target. As such, the task provides a powerful tool with which to investigate the cognitive processes underlying goal-directed behaviour. In healthy participants antisaccad…
Glaucoma is a leading cause of visual impairment and, if untreated, irreversible blindness. Perimetry is the clinical tool for assessing the functional ‘seeing’ part of the field of view (visual field) and is widely used in the detection and clinical monitoring of glaucoma. Thes…
How do we know where objects are in the environment and how do we use this information to guide our actions? Recovering the three-dimensional (3D) structure of our surroundings from the two-dimensional retinal input received from the eyes is a computationally challenging task an…
Children with delayed reading skills and/or poor academic achievement are increasingly being referred to Eye Care Professionals with suspected eye movement/“tracking” difficulties. However, current clinical techniques are highly subjective, poorly controlled, and relatively impr…
This thesis explored some aspects of the relationship between structural progression of the glaucomatous optic nerve head (ONH) and functional progression of the visual field. Sixty-one individuals with a longitudinal series of ONH images were manually identified from a database…
With the help of modern technology, blindness caused by retinal diseases such as age-related macular degeneration or retinitis pigmentosa is now considered reversible. Scientists from various fields such as Neuroscience, Electrical Engineering, Computer Science, and Bioscience h…
In the UK, 11,000 new cases of open angle glaucoma (OAG) are diagnosed annually in people aged 40 to 70 years. However, two-thirds of UK OAG cases may remain undiagnosed, highlighting the need for improved detection. UK optometrists generate more than 95% of referrals for suspec…
Thyroid-Associated Ophthalmopathy (TAO) is a debilitating inflammatory condition of the orbit occurring in 30-50% of Graves' Disease (GD) patients. It is not currently possible to predict which GD patients will develop TAO or the severity of their eventual ophthalmic manifestati…
Ten experiments examined the way that automatic processing of the visual perspectives and eye gaze of others affects adults‘ perception and encoding of the social world. I investigated the amount of flexibility that automatic visual perspective computation accommodates. Experime…
The cochlea plays an important role in human hearing. Its basic function is to map sounds of different frequencies onto corresponding characteristic positions on the basilar membrane, BM. When sounds enter the fluid-filled cochlea, deflections of the BM occur due to pressure dif…
Cochlear implants have been shown to successfully restore hearing to the profoundly deaf. Despite this achievement, issues remain concerning the power consumption and the accuracy of stimulation. This thesis is mainly concerned with investigating the spread of stimulation voltag…
Chemotaxis and cell migration are important processes for life, involved in organism development and homeostasis and implicated in a number of disease states. Dictyostelium discoideum, an amoeba, is a useful model for investigation of chemotaxis and development, due to its abili…
It is estimated that there are millions of corneal operations performed annually in the United Kingdom and United States following pathology and/or acute injury. Equally, millions elect to have corneal refractive surgery to remedy visual disorders such has myopia, prespreopia, a…
The centrifugal visual system (CVS) is a feedback pathway of predominantly visual information from the brain to both eyes, but principally to the contralateral retina. The CVS is often considered to be something of a peculiarity, regarded as being specific to birds (Aves). Indee…
Age-related macular degeneration (AMD) is the leading cause of visual impairment in the developed world. The prevalence of this disease will continue to increase over the coming decades as the average age of the global population rises. There is consequently an urgent need to de…