Catalog Search Results
3) Blinking
Language
English
Description
You blink an average of 15 times a minute, moving lubricating fluid from your lacrimal glands across your eyes. Blinking also helps prevent harmful substances like smoke from getting in your eyes and protects your eyes from foreign objects. When your eye is irritated, your lacrimal gland produces extra tears to wash out impurities. As fluid drains through your tear ducts and into your nasal cavity, it may cause you to sniffle.
7) Cataract
Language
English
Description
Cataracts may develop with advancing age or in response to diseases such as diabetes. A cataract appears as a cloudy area in the lens.
8) Cataract
Language
Español
Description
Cataracts may develop with advancing age or in response to diseases such as diabetes. A cataract appears as a cloudy area in the lens.
9) Glaucoma
Language
English
Description
Glaucoma is the development of increased pressure within the eye. If left untreated, glaucoma may damage the optic nerve, resulting in visual impairment and eventually blindness.
10) Glaucoma
Language
Español
Description
Glaucoma is the development of increased pressure within the eye. If left untreated, glaucoma may damage the optic nerve, resulting in visual impairment and eventually blindness.
11) Corneal Injury
Language
English
Description
Injury or infection of the cornea can lead to serious visual impairment. The cornea is the crystal clear (transparent) tissue covering the front of the eye. It works with the lens of the eye to focus images on the retina.
12) Corneal injury
Language
Español
Description
Injury or infection of the cornea can lead to serious visual impairment. The cornea is the crystal clear (transparent) tissue covering the front of the eye. It works with the lens of the eye to focus images on the retina.
Language
English
Description
The macula is the part of the retina that distinguishes fine details at the center of the field of vision. Macular degeneration results from a partial breakdown of the insulating layer between the retina and the choroid layer of blood vessels behind the retina. Macular degeneration results in the loss of central vision only.
Language
Español
Description
The macula is the part of the retina that distinguishes fine details at the center of the field of vision. Macular degeneration results from a partial breakdown of the insulating layer between the retina and the choroid layer of blood vessels behind the retina. Macular degeneration results in the loss of central vision only.
Language
English
Description
As this program illustrates, direct access to the eye coupled with technological wizardry has meant that ophthalmology is one of the most rapidly advancing areas of medicine. Both up-to-the-minute techniques and experimental procedures are profiled, such as photodynamic therapy, which inhibits macular degeneration by eroding deposits called drusen. The program shows how microsurgery, particularly the LASIK method, has revolutionized the field. Also...
16) Glaucoma
Language
English
Description
People with glaucoma now have a reasonable chance of saving their eyesight-if the disease is detected early enough. This program focuses on information critical to fighting glaucoma, emphasizing the need for regular eye exams and medical support in the management of the degenerative ailment. Exploring the risk factors for glaucoma, including its disproportionate rate among African Americans and its relationship to diabetes and hypertension, the video...
Language
English
Description
This program provides a systematic overview of visual fields and their associated defects. After key terms are defined, a dynamic 3-D model of the brain and visual system is employed to illustrate the neuroanatomy of the eyes. A full demonstration of confrontational testing is then followed by a look at both kinetic and static automated field-testing techniques and an introduction to the visual field chart. The program closes by displaying the effects...
Language
English
Description
Perhaps more disturbing than the global statistics concerning blindness-for example, one child goes blind every minute-is the fact that much of it is easily preventable. This program shows how scientific and technological advances offer new hope for millions suffering from vision loss. Experts such as ophthalmologists David Yorston and Bruce Allan of London's renowned Moorfields Eye Hospital discuss cataracts, trachoma, and vitamin A deficiency, the...
Language
English
Description
Using the expertise of leading ophthalmologists specializing in the most common refractive and non-refractive conditions, this program presents the latest therapies to protect the eyes in the event of potentially blinding diseases. Ivan Schwab, Director of Cornea and External Disease Service at the University of California, Davis, maps out the physiology of the eye and its role in sending images to the brain; Kuldev Singh, Director of the Glaucoma...
Language
English
Description
This program demonstrates how to use a direct ophthalmoscope to examine patients' retinas. A detailed examination technique segment is followed by examples of clinical abnormalities to be looked for during a checkup. Juxtaposed with images of ordinary retinal tissue, the examples clearly display the signs of key pathologies. Possible causes of retinal abnormalities are presented, and common errors in interpreting those abnormalities are addressed....