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A fixation disparity is not constant within a certain observer, but can vary depending on the viewing conditions. If test prisms with increasing amount are placed in front of the observer’s eyes, the fixation disparity changes in the eso direction with base-in prisms and in the exo direction with base-out prisms (Fig. 3).
The strength of the prism is increased until the streak of the light passes through the centre of the prism, as the strength of the prism indicates the amount of deviation present. The Maddox rod is a handheld instrument composed of red parallel plano convex cylinder lens , which refracts light rays so that a point source of light is seen as a ...
Exophoria. Exophoria is a form of heterophoria in which there is a tendency of the eyes to deviate outward. [1] During examination, when the eyes are dissociated, the visual axes will appear to diverge away from one another. [2] The axis deviation in exophoria is usually mild compared with that of exotropia.
Epilobium angustifolium L. Chamerion angustifolium (L.) Holub. Chamaenerion angustifolium is a perennial herbaceous flowering plant in the willowherb family Onagraceae. It is known in North America as fireweed and in Britain and Ireland as rosebay willowherb. [1] It is also known by the synonyms Chamerion angustifolium and Epilobium angustifolium.
Primula vulgaris is a perennial growing 10–30 centimetres (4–12 inches) tall, with a basal rosette of leaves which are more-or-less evergreen in favoured habitats. The leaves are 5–25 cm (2–10 in) long and 2–6 cm (1– in) broad, often heavily wrinkled, with an irregularly crenate to dentate margin. The leaf blade is gradually ...
Tacca wilsonii H.Limpr. Clerodendrum esquirolii H.Lév. Tacca chantrieri is a species of flowering plant in the yam family Dioscoreaceae. It was first described in 1901 by Édouard André. [1] T. chantrieri is native to southeastern Asia. It is commonly known as the black bat flower due to its shape and coloring. [2]
An inflorescence, in a flowering plant, is a group or cluster of flowers arranged on a stem that is composed of a main branch or a system of branches. [1] An inflorescence is categorized on the basis of the arrangement of flowers on a main axis (peduncle) and by the timing of its flowering (determinate and indeterminate). [2]
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