Ophthalmology is a clinical and surgical specialty within medicine that deals with the diagnosis and treatment of eye disorders. A former term is oculism.
Myopia, also known as near-sightedness and short-sightedness, is an eye disease where light from distant objects focuses in front of, instead of on, the retina. As a result, distant objects appear blurry while close objects appear normal. Other symptoms may include headaches and eye strain. Severe myopia is associated with an increased risk of macular degeneration, retinal detachment, cataracts, and glaucoma.
A cataract is a cloudy area in the lens of the eye that leads to a decrease in vision of the eye. Cataracts often develop slowly and can affect one or both eyes. Symptoms may include faded colours, blurry or double vision, halos around light, trouble with bright lights, and difficulty seeing at night. This may result in trouble driving, reading, or recognizing faces. Poor vision caused by cataracts may also result in an increased risk of falling and depression. Cataracts cause 51% of all cases of blindness and 33% of visual impairment worldwide.
Optometry is a specialized health care profession that involves examining the eyes and related structures for defects or abnormalities. Optometrists are health care professionals who typically provide comprehensive eye care.
Amblyopia, also called lazy eye, is a disorder of sight in which the brain fails to fully process input from one eye and over time favors the other eye. It results in decreased vision in an eye that typically appears normal in other aspects. Amblyopia is the most common cause of decreased vision in a single eye among children and younger adults.
Refractive error is a problem with focusing light accurately on the retina due to the shape of the eye and/or cornea. The most common types of refractive error are near-sightedness, far-sightedness, astigmatism, and presbyopia. Near-sightedness results in far away objects being blurry, far-sightedness and presbyopia result in close objects being blurry, and astigmatism causes objects to appear stretched out or blurry. Other symptoms may include double vision, headaches, and eye strain.
Vision therapy (VT), or behavioral optometry, is an umbrella term for alternative medicine treatments using eye exercises, based around the pseudoscientific claim that vision problems are the true underlying cause of learning difficulties, particularly in children. Vision therapy has not been shown to be effective using scientific studies, except for helping with convergence insufficiency. Most claims—for example that the therapy can address neurological, educational, and spatial difficulties—lack supporting evidence. Neither the American Academy of Pediatrics nor the American Academy of Ophthalmology support the use of vision therapy.
The Lions Eye Institute (LEI) is an Australian medical research institute affiliated with the University of Western Australia. It was established in 1983 with support of the Lions Clubs of Western Australia and headquartered in the Perth suburb of Nedlands, Western Australia. The LEI is a not-for-profit centre of excellence that combines an ophthalmic clinic with scientific discovery developing techniques for the prevention of blindness and the reduction of pain from blinding eye conditions.
An eye care professional is an individual who provides a service related to the eyes or vision. It is any healthcare worker involved in eye care, from one with a small amount of post-secondary training to practitioners with a doctoral level of education.
Astigmatism is a type of refractive error due to rotational asymmetry in the eye's refractive power. This results in distorted or blurred vision at any distance. Other symptoms can include eyestrain, headaches, and trouble driving at night. Astigmatism often occurs at birth and can change or develop later in life. If it occurs in early life and is left untreated, it may result in amblyopia.
Dilated fundus examination (DFE) is a diagnostic procedure that uses mydriatic eye drops to dilate or enlarge the pupil in order to obtain a better view of the fundus of the eye. Once the pupil is dilated, examiners use ophthalmoscopy to view the eye's interior, which makes it easier to assess the retina, optic nerve head, blood vessels, and other important features. DFE has been found to be a more effective method for evaluating eye health when compared to non-dilated examination, and is the best method of evaluating structures behind the iris. It is frequently performed by ophthalmologists and optometrists as part of an eye examination.
Iridodialysis is a localized separation or tearing away of the iris from its attachment to the ciliary body.
The eye care system in Ghana can be said to be one in its infant or growing stages. Today there are less than 300 eye care professionals taking care of the eye needs of over 23 million Ghanaians.
The Australian College of Optometry (ACO) is an Australian non-profit working to improve the eye health and well-being of various Australian communities. Established in 1940, the ACO's goal is to deliver public health optometry, vision research and professional education.
Sheraz Daya is a British ophthalmologist. Daya founded the Centre for Sight in 1996, and works in stem-cell research and sight restoration and correction surgery.
Gerard Sutton is an Australian ophthalmic surgeon and ophthalmologist in Australia and New Zealand. His specialty is laser vision correction, cataract and lens surgery, and corneal transplantation.
Jan E. Lovie-Kitchin is an Australian optometrist, former professor at Queensland University of Technology and founder of the university's Vision Rehabilitation Centre. She was the co-developer of the Bailey-Lovie visual acuity chart.
Seyed Hassan Ghazizadeh Hashemi is an ophthalmologist and full professor at Tehran University of Medical Sciences, as well as the head and founder of the Noor Ophthalmology Complex.
Allon Barsam is a London-based ophthalmologist specializing in cataract surgery, refractive surgery and corneal and external eye disease. Barsam carried out the first human treatments of microwave keratoplasty.
Jennifer P. Craig is a Scottish–New Zealand academic optometrist, and is a full professor at the University of Auckland, specialising in ocular surface disease.
