Editorial - Journal of Clinical Ophthalmology (2021) Volume 5, Issue 6
Vision impairment: Its implications and prevention strategies.
Department of Ophthalmology, Harvard University, Cambridge, MA, United States
- Corresponding Author:
- Dr. George Elloite
Department of Ophthalmology,
E-mail: [email protected]
Accepted date: 15 November, 2021
Citation: Elloite G. Vision impairment: Its implications and prevention strategies. J Clin Ophthalmol. 2021;5(6):481.
Decrease of visual activity, in which the eye does not recognize objects clearly as earlier, which can lead to vision impairment. It might also be caused by a loss of visual field, which occurs when the eye can no longer see enough without moving the eyes or rotating the head. A person's eyesight cannot be restored to a "Normal" level if they have vision impairment.
There are several methods to describe the severity of a person's eyesight loss. Low vision is defined by the World Health Organization as vision acuity of 20/70 to 20/400 with the greatest available correction, or a visual field of 20 degrees or less. A visual acuity of less than 20/400 with the highest available correction, or a visual field of less than 10 degrees, is considered "Blindness."
A person with a visual acuity of 20/70 can see what a person with normal vision can see at 70 feet from a distance of 20 feet. A person with a 20/400 visual acuity can see at 20 feet what a person with normal vision can see at 400 feet. A typical horizontal vision field is 160-170 degrees. A visual acuity of 20/200 or less with the greatest available correction, or a visual field of 20 degrees or less, is considered legal blindness.
Visual acuity alone cannot predict how much vision loss may effect a person's life. It's also crucial to evaluate how well someone uses their eyesight. Even if two persons have the same visual acuity, one may be able to accomplish more with his or her eyesight in everyday situations.Most blind persons have some functional vision that allows them to move around in their environment and do tasks in their everyday lives. The functional vision of a person may be assessed by seeing them in various contexts to see how they utilise their eyesight.
Implications of Vision Loss
Early-onset severe visual impairment in young children can cause a delay in motor, verbal, emotional, social, and cognitive development, with long-term consequences. Vision impairment in school-aged children can lead to decreased levels of academic accomplishment.
Adults' quality of life is profoundly impacted by vision impairment. Adults with vision impairment had greater rates of sadness and anxiety, as well as lower rates of employment involvement and productivity. Vision impairment in older persons can lead to social isolation, difficulty in walking, higher chances of injury and fractures, and a higher risk of dementia.
Impact on the economyGlobally, vision impairment is a huge financial burden. The yearly worldwide expenses of productivity losses related with uncorrected myopia and presbyopia alone, for example, were projected to be US$ 244 billion and US$ 25.4 billion, respectively.
Vision Impairment Prevention Strategies
Every eye disease needs a unique and prompt approach. There are successful treatments that address the needs related with eye disorders and visual impairment, including promotion, prevention, treatment, and rehabilitation; some are among the most cost-effective and practicable of all health-care interventions to execute. Uncorrected refractive defect, for example, can be corrected with spectacles or surgery.
Many eye problems, such as dry eye, conjunctivitis, and blepharitis, can be treated if they cause discomfort and pain but do not cause impaired vision. The goal of treatment for these illnesses is to reduce symptoms while also avoiding the progression of the disease to a more serious stage.People with permanent vision loss, such as diabetic retinopathy, glaucoma, trauma-related vision loss, and age-related macular degeneration, benefit greatly from vision rehabilitation.