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Prism dioptres. Prism correction is commonly specified in prism dioptres, a unit of angular measurement that is loosely related to the dioptre. Prism dioptres are represented by the Greek symbol delta (Δ) in superscript. A prism of power 1 Δ would produce 1 unit of displacement for an object held 100 units from the prism. [2]
Amblyopia. Anisometropia is a condition in which a person's eyes have substantially differing refractive power. [1] Generally, a difference in power of one diopter (1D) is the threshold for diagnosis of the condition . [2] [3] Patients may have up to 3D of anisometropia before the condition becomes clinically significant due to headache, eye ...
Orthokeratology, also referred to as Night lenses, Ortho-K, OK, Overnight Vision Correction, Corneal Refractive Therapy (CRT), Accelerated Orthokeretology, Cornea Corrective Contacts, Eccentricity Zero Molding, and Gentle Vision Shaping System (GVSS), is the use of gas-permeable contact lenses that temporarily reshape the cornea to reduce refractive errors such as myopia, hyperopia, and ...
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.
Esophoria is an eye condition involving inward deviation of the eye, usually due to extra-ocular muscle imbalance. It is a type of heterophoria. Cause. Causes include: Refractive errors; Divergence insufficiency; Convergence excess; this can be due to nerve, muscle, congenital or mechanical anomalies.
Sri Lanka Overseas Service. The Sri Lanka Overseas Service ( SLOS) ( Sinhala: ශ්රී ලංකා විදේශ සේවය; śrī laṁkā vidēśa sēvaya) which is most commonly referred to as the Sri Lanka Foreign Service is the foreign service of Sri Lanka. It is the body of career diplomats of Sri Lanka. The Permanent ...
On 21 April 2019, Easter Sunday, three churches in Sri Lanka and three luxury hotels in the commercial capital, Colombo, were targeted in a series of coordinated ISIS -related terrorist suicide bombings. Later that day, two smaller explosions occurred at a housing complex in Dematagoda and a guest house in Dehiwala.
The Department is also responsible for the transportation of prisoners within the country with the assistance of the Sri Lanka Police. Facilities. Prison Headquarters, Colombo Sri Lanka Prisons Emergency Action and Tactical Force; The Centre for Research and Training in Corrections; Maximum security prisons - 4 Angunakolapelessa Prison (est. 2017)
www .police .lk. The Inspector General of Police (IGP) is the professional head of the Sri Lanka Police. They are the most senior police officer in Sri Lanka and oversees all police personnel throughout the country. The IGP reports to the Minister of Law and Order, when the Police Service is under the Ministry of Law and Order as it is currently.
Website. www.slsi.lk. Sri Lanka Standards Institution also known as Sri Lanka Standards Institute (SLSI) is the National Standards Authority/Board of Sri Lanka as a subsidiary member of International Organization for Standardization was established in 1964 under the former Bureau of Ceylon Standards Act No. 38 of 1964. [1]