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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.
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 ...
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]
Esotropia is a form of strabismus in which one or both eyes turn inward. The condition can be constantly present, or occur intermittently, and can give the affected individual a "cross-eyed" appearance. [1] It is the opposite of exotropia and usually involves more severe axis deviation than esophoria. Esotropia is sometimes erroneously called ...
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.
The majority of autorefractors calculate the vision correction a patient needs (refraction) by using sensors that detect the reflections from a cone of infrared light. These reflections are used to determine the size and shape of a ring in the retina which is located in the posterior part of the eye.
Ophthalmology. In ophthalmology, horror fusionis is a condition in which the eyes have an unsteady deviation, with the extraocular muscles performing spasm-like movements that continuously shift the eyes away from the position in which they would be directed to the same point in space, giving rise to diplopia. Even when the double vision images ...
Website. www .spc .lk /index .php. The State Pharmaceuticals Corporation (SPC) is a state-owned enterprise with its headquarters in Colombo, Sri Lanka. It is the largest supplier of drugs in the country, and is tasked with providing quality-assured health care items that are safe and effective, at an affordable price, while educating the public ...
t. e. Parliamentary elections were held in Sri Lanka on 5 August 2020 to elect 225 members to Sri Lanka's 16th Parliament. [1] [2] [3] 16,263,885 people were eligible to vote in the election, 31.95% of whom were young voters. [4] [5] The incumbent Sri Lanka People's Freedom Alliance coalition claimed a landslide victory in the election, winning ...
Christianity is a minority religion in Sri Lanka. It was introduced to the island in first century. [2] Traditionally, after Thomas the Apostle 's visit in Kerala in AD 52, Christianity is said to have been introduced to Sri Lanka because of its close geographical and commercial ties. [3] [4]