The Role Of Vision In Radiography Essay

Introduction
Vision is a vital role in medical imaging and the visual ability of the radiologist interpreting the image is largely overlooked (Halpenny et al. 2012). To understand how vision plays a role in radiography, psychophysics is studied to understand the relationship between the physical stimulus and sensation experienced by a person (Lu et al. 2014). The radiologist has a role of interpreting radiographic images hence eyesight is an important factor that needs to be frequently examined. There have been significant reports from radiologists about eye strain and fatigue due to the continued hours spent examining digital images (Krupinski 2011). Radiology relies on the detailed examination of an image and the precise diagnosis of clinically…

There are three distinct layers in the eye with the outer layer consisting of the cornea and sclera, the middle layer containing the iris, ciliary body and choroid and lastly the inner layer which has the retina (Galloway et al. 2006). The cornea‚Äôs main functions is to protect the eye against infection and to refract and transmit the light to the lens and retina. The iris controls the size of the pupil, thus limiting the amount of light that reaches the retina. The ciliary body controls the shape of the lens and the choroid provides nutrients and oxygen to the eye. The retina contains neurons that capture and processes light. Light enters the eye via the outer components and travels through the neurons of the retina and is accordingly captured by the photoreceptors present at the back of the retina. The neurons then translate the visual information received from the eye into nerve impulses that travel from the optic nerve to the lateral geniculate nucleus to be interpreted (Willoughby et al. 2010). Each eye sees a marginally different image which is combined in the brain to become one…

The development of PACS (picture archiving and communication system) has revolutionised image viewing in westernised healthcare systems. Compared to film, digital imaging offers the flexibility and convenience for medical professionals. A consequence to PACS usage is that the radiologist would spend a majority of their working day in front of a computer monitor. Even when the radiologist is not reporting on images, they would still be facing a monitor through various meetings. With the use of the tests mentioned, measuring visual acuity should be mandatory for radiologists and be consistently examined in regular periods (Halpenny et al….