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Aphakia. Aphakia is the absence of the lens of the eye, due to surgical removal, such as in cataract surgery, a perforating wound or ulcer, or congenital anomaly. It causes a loss of ability to maintain focus ( accommodation ), high degree of farsightedness ( hyperopia ), [1] and a deep anterior chamber. Complications include detachment of the ...
Coefficient of adjustment (CA)—The inverse of the CI, the CA quantifies the modification needed to the initial surgery plan to have achieved a CI of 1, the ideal correction. If the surgeon achieves an overcorrection, for example, the CA might be 0.9, indicating that the surgeon should have selected a correction of 90% of what was selected.
Psychosurgery. MeSH. D011612. [ edit on Wikidata] Psychosurgery, also called neurosurgery for mental disorder ( NMD ), is the neurosurgical treatment of mental disorder. [1] Psychosurgery has always been a controversial medical field. [1] The modern history of psychosurgery begins in the 1880s under the Swiss psychiatrist Gottlieb Burckhardt.
Prism (optics) An optical prism is a transparent optical element with flat, polished surfaces that are designed to refract light. At least one surface must be angled — elements with two parallel surfaces are not prisms. The most familiar type of optical prism is the triangular prism, which has a triangular base and rectangular sides.
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. [1]
Awards. Lomonosov Gold Medal (1986) Svyatoslav Nikolayevich Fyodorov ( Russian: Святослав Николаевич Фёдоров; 8 August 1927 – 2 June 2000) was a Russian ophthalmologist, politician, professor, full member of the Russian Academy of Sciences and Russian Academy of Medical Sciences. He is considered to be a pioneer of ...
History of psychosurgery. Psychosurgery, also called neurosurgery for mental disorder or functional neurosurgery, is surgery in which brain tissue is destroyed with the aim of alleviating the symptoms of mental disorder. It was first used in modern times by Gottlieb Burckhardt in 1891, but only in a few isolated instances, not becoming more ...
A. Alpins method. Anesthesia for eye surgery. Anterior chamber paracentesis.