Naslov
Near point of convergence

Autori
Batinović, Lucija ; Baković, Nikolina ; Drugović, Sonja ; Mihić, Kristina

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, stručni

ISBN
978-953-7716-57-8

Skup
Optometrijska konferencija srednje i jugoistočne Europe - OCCSEE 2016

Mjesto i datum
Split, Hrvatska, 14.04.2016. - 16.04.2016

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
vergence, NPC

Sažetak
The vergences fulfill the second of the two tasks assigned to the motor system of the eyes. They align the eyes in such a way as to ensure and maintain binocular fixation and binocular vision. Since, by definition, they are movements of the two eyes in opposite directions, they are also known as disjunctive movements. Convergence is a disjunctive (vergence) movement that produces an increase in the angle formed by the visual axes, ordinarily through simultaneous, synchronous adduction of each eye. The result is a convergent position of the visual axes. The term convergence is applied equally to the movement of the eyes, to the convergent position they assume through this movement, and by implication to the innervational pattern required to maintain the convergent position. Components of convergence: voluntary convergence, tonic convergence, accommodative convergence and the AC/A ratio, fusional convergence, proximal convergence Near point of convergence: the near point of convergence is a basic visual measure performed by eye care clinicians. It defines the amplitude of convergence. As a rule, it is much closer to the eyes than the NPA and in general does not change with age. In clinical practice an NPC of 10 cm is considered adequate. Instruments that we use to measure NPC: penlight, transilluminator, Millimeter ruler, RAF near point rule

Izvorni jezik
Engleski

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