Comparison of symmetrical prism adaptation to asymmetrical prism adaptation in those with normal binocular vision.
Comparison of symmetrical prism adaptation to asymmetrical prism adaptation in those with normal binocular vision.
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DOI：
10.1016/j.visres.2018.06.004
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发表时间：
2018-08
期刊：
影响因子：
1.8
通讯作者：
Alvarez TL
中科院分区：
文献类型：
--
作者：
Santos EM;Yaramothu C;Alvarez TL
这项研究试图确定对称与不对称水平棱镜（底向外或底向内）相比是否会引起不同的隐斜视适应率。十六名具有正常双眼视力的年轻人参加了使用 3Δ 基外或 3Δ 基内双目棱镜翻转器的对称隐斜视适应实验和使用 6Δ 基外或 6Δ 基内单眼楔形棱镜的非对称隐斜适应实验。实验是随机和平衡的，以减少棱镜刺激顺序的影响。对于双眼视力正常的受试者，不对称基外棱镜适应明显快于对称棱镜适应。使用内基棱镜的不对称隐斜适应与对称隐斜适应没有显着差异，这意味着在聚散的缓慢融合分量中存在方向不对称（会聚与发散的眼球运动）。数据表明版本系统和慢融合聚散系统之间可能存在潜在的相互作用。结果具有临床相关性，因为与双眼正常对照相比，会聚或发散不足/过度的患者可能会在对称和不对称隐斜视适应之间表现出更明显的差异。这些差异也可能与临床测量有关，例如聚散融合范围，可以对称测量（使用验光仪中的里斯利棱镜）或不对称测量（使用棱镜条）。
This study sought to determine whether symmetrical compared to asymmetrical horizontal prisms (base-out or base-in) evoked different rates of phoria adaptation. Sixteen young adults with normal binocular vision participated in a symmetrical phoria adaptation experiment using a 3Δ base-out or 3Δ base-in binocular prism flipper and an asymmetrical phoria adaptation experiment using a 6Δ base-out or 6Δ base-in monocular wedge prism. The experiments were randomized and counterbalanced to reduce the influence of the prism stimulation order. Asymmetrical base-out prism adaptation was significantly faster than symmetrical prism adaptation for subjects with normal binocular vision. Asymmetrical phoria adaptation with base-in prism was not significantly different from symmetrical phoria adaptation implying that there are directional asymmetries (convergent versus divergent eye movements) in the slow fusional component of vergence. Data suggest that a potential interaction between the version system and the slow fusional vergence system may exist. Results have clinical relevance because patients with convergence or divergence insufficiency / excess may potentially show more pronounced differences between symmetrical and asymmetrical phoria adaptation compared to binocularly normal controls. These differences might also be relevant to clinical measurements such as vergence fusional range, which can be measured symmetrically (with Risley prisms in a phoroptor) or asymmetrically (with prism bar).
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影响因子：
1.8
作者：
Horwood AM;Riddell PM
通讯作者：
Riddell PM
DOI：
10.1098/rspb.1989.0031
发表时间：
1989-05-22
期刊：
PROCEEDINGS OF THE ROYAL SOCIETY SERIES B-BIOLOGICAL SCIENCES
影响因子：
--
作者：
ERKELENS, CJ;STEINMAN, RM;COLLEWIJN, H
通讯作者：
COLLEWIJN, H
影响因子：
3.7
作者：
Kim, Eun H.;Vicci, Vincent R.;Alvarez, Tara L.
通讯作者：
Alvarez, Tara L.
影响因子：
3.5
作者：
Alvarez TL;Jaswal R;Gohel S;Biswal BB
通讯作者：
Biswal BB
影响因子：
1.4
作者：
Alvarez, Tara L.;Vicci, Vincent R.;Biswal, Bharat B.
通讯作者：
Biswal, Bharat B.