Retinal scan

MATERIAL AND METHODS This prospective randomized controlled clinical trial was conducted from September 2012 to November 2013 and included patients who underwent microincision cataract surgery (MICS) at the Hospital Virgen de los Lirios. The study recruited 60 eyes of 41 patients. Eligible patients were those aged 65 to 80 with senile cataract and no other concomitant disease that would prevent a postoperative best corrected visual acuity (BCVA) of 20/40 or better. Exclusion criteria included history

Effect Of Myopia On Measuring Peripapillary Retinal Nerve Fiber Layer Thickness ABSTRACT Settings: Faculty of Medicine, Alexandria University, Egypt. Purpose: To assess the influence of axial length (AL) and refractive status of the eye on retinal nerve fiber layer (RNFL) thickness in myopic eyes measured by spectral domain optical coherence tomography (OCT). Methods: This study included 60 eyes of 60 healthy myopic individuals. Patients with a history of glaucoma or any other concurrent ocular

major complication in patient with diabetes mellitus (DM) that can lead to blindness. Recent studies reported that damage to BRB at the retinal pigment epithelium has additionally been proposed as a mechanism for the development of diffuse edema .The breakdown of the inner BRB results in accumulation of fluid within the extracellular space. Subsequent increases in retinal thickness are relevant quantitative parameters for BRB damage [1,2] . Histological studies of neural component of the retina have revealed

Better understanding of glaucoma, requires assessment of the different components incorporate ,retinal nerve fiber layer (RNFL), and, and visual function. On the other hand, elevated intraocular pressure, are not only risk factor of glaucoma .RNFL thickness measured by optical coherence tomography (OCT) is a reliable early marker of glaucoma[1,2]. As the pathogenesis of glaucoma involves the degeneration of axons as well as cell bodies and dendrites, The primary site of axonal damage in glaucoma

microvasculary and macrovasculary structures2,3. Although the exact pathogenesis is not identified yet, it is known that smoking can cause a decrease in the retinal blood flow4–6. smoking may affect macular functions through impaired choroidal circulation5, decreased perfusion pressure7, toxicity to the neurosensory retina, and/or to the retinal pigment epithelium (RPE)8,9. Macula and its functions in smokers may be affected by alterations through

I. Introduction There is no shortage of new diagnostic technology at optometry’s disposal. It seems every month a new device is available to enhance our practice and patient care. And with each new device, we will have to ask the same questions: Will it pay for itself? How much does it cost? Can I afford it? Let's face it, the last thing any of us needs is a piece of equipment sitting idle in the corner collecting dust, and along with it our simmering anger at the fact we're paying through the nose

TERM PAPER PROJECT BIOMETRIC SECURITY SYSTEM AMITY SCHOOL OF ENGINEERING GUIDED BY: SUBMITTED BY: PROF. SANJEEV THAKUR PREETI SEHRAWAT BTech –ECE A12405113001

chosen if the eye met both the inclusion and exclusion criteria. If both eyes of the same subject were qualified, both were selected. Central Macular thickness measurement: The fast macular thickness OCT scan protocol was performed with measurements from 20 x 20-degree raster scans (consisting of 25 scans). The mean thickness of the central 1-mm zone of the 1, 3, 6 mm Early Treatment Diabetic Retinopathy Study (ETDRS) grid thickness map was measured by the program incorporated in the Spectralis OCT software

Questions 1) Describe the principles underlying the technique of laser speckle flowgraphy that can be used for observing/estimating retinal blood flow. Discuss its relative advantages and disadvantages compared to other techniques. Refer to Sugiyama et al. (2010). Use of laser speckle flowgraphy in ocular blood flow research. ACTA Ophthalmol. 88: 723-729, in your answer. The retina is one of the most metabolically active tissues found within the human body and is a very important structure within

used to identify its users can also allow it to be hard for users to be identified. For iris or retinal scanning applications, users might find it very intrusive. Users might also have the concern for the safety of the eyes throughout the iris or retinal scan. Furthermore, databases used to store user identification data will soon be very large which might form a potential threat. For scanning retinal/iris characteristics and storing wide range of database, biometrics system requires new and modern