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|This next slide is another example of peripheral visual field loss. In addition to retinitis pigmentosa, another eye condition which can have the same effect is glaucoma. In this slide, someone has already reached the definition of legal blindness and will experience both mobility and night vision difficulties. Although there are different types of glaucoma, it normally has to do with inner ocular pressure within the eye. Some forms of glaucoma will provide extreme eye pain, which actually helps in terms of seeking treatment and early diagnosis. However, some forms of glaucoma have little or no early symptoms which would cause people to seek such treatment. Sometimes a person may experience halos or rings around lights or a shimmering of lights. Once the visual field is impacted, they will obviously experience night vision difficulties. The tragedy of glaucoma is that routine eye examinations will detect abnormal inner ocular tensions or the early changes in the optic disc, sometimes referred to as glaucoma discupping — with early detection, the eye condition can normally be treated by medication which can eliminate or reduce chances of vision loss. However, if untreated, it is a progressive, degenerative disease which can result in effects like these in this slide and even total blindness.|
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