The journal of medical investigation : JMI · 2018
Observation of Ciliary Body Changes during Accommodation Using Anterior OCT.
СтатьяНаблюдательное исследованиеНазвание и аннотация: Перевод пока не подготовлен
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Mohamed Farouk Mahmoud, Naito Takeshi, Shinomiya Kayo, Mitamura Yoshinori
Аннотация
AIM: To evaluate the anatomical changes in the ciliary body (CB) during naturally stimulated accommodation in children using anterior segment optical coherence tomography (OCT).
METHODS: This study was a prospective, observational, noncomparative case series included 18 eyes of 9 children (8 males and 1 female) aged from 4 to 10 years. Ciliary body thickness (CBT) was measured temporally by Anterior OCT at 1, 2 and 3 mm posterior to the scleral spur. Measurements were performed in the accommodated state and the unaccommodated state (with cycloplegia).
RESULTS: The mean CBT significantly increased by accommodation at 1 mm posterior to the scleral spur from 751 42 to 818 40 μm (P 0.001) and significantly decreased at 2 and 3 mm from 506 66 to 445 59 μm and from 290 54 to 240 50 μm respectively (P 0.001).
CONCLUSION: During accommodation, the anterior portion of the ciliary body thickens, while the posterior portion decreases in thickness. These findings imply that the circular ciliary muscles are mainly involved in accommodation and not the longitudinal muscles. J. Med. Invest. 65:60-63, February, 2018.
METHODS: This study was a prospective, observational, noncomparative case series included 18 eyes of 9 children (8 males and 1 female) aged from 4 to 10 years. Ciliary body thickness (CBT) was measured temporally by Anterior OCT at 1, 2 and 3 mm posterior to the scleral spur. Measurements were performed in the accommodated state and the unaccommodated state (with cycloplegia).
RESULTS: The mean CBT significantly increased by accommodation at 1 mm posterior to the scleral spur from 751 42 to 818 40 μm (P 0.001) and significantly decreased at 2 and 3 mm from 506 66 to 445 59 μm and from 290 54 to 240 50 μm respectively (P 0.001).
CONCLUSION: During accommodation, the anterior portion of the ciliary body thickens, while the posterior portion decreases in thickness. These findings imply that the circular ciliary muscles are mainly involved in accommodation and not the longitudinal muscles. J. Med. Invest. 65:60-63, February, 2018.