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要約 目的:内斜視患者は立体視が障害され,映画やゲームなどの3D映像が楽しめない場合が多い。今回,斜視手術を受けた内斜視患者の立体視機能を調べた。対象と方法:手術加療を受けた内斜視患者27例を対象に交代遮蔽試験,4灯試験,Titmus fly testを行い,3Dアトラクションおよび3D映画の自覚的な見え方を聴取した。結果:Fly testや3D映画よりも3Dアトラクションを立体視できた患者のほうが多く,特に乳児内斜視群ではその傾向が強かった(p=0.013)。Fly testでは3Dアトラクションと違い,成功群で4灯試験における抑制暗点が小さかった(p=0.03)。結論:飛び出しの視差が大きい3Dアトラクションは立体視が比較的容易だが,その違いには抑制暗点および対象となる映像の大きさ,視差が関与していることが推察された。
Abstract. Purpose:In general, esotropia patients have poor stereopsis and cannot enjoy 3D images such as movies or video games. We investigated the stereopsis of esotropia patients who had strabismus surgery. Cases and Methods:27 esotropia patients who had strabismus operations were examined. They had alternative prism cover test, 4-dot test, Titmus fly test and questionnaire about their subjective vision of 3D attractions and 3D movies. Result:More patients could see 3D attractions stereoscopically than fly test or 3D movies. The tendency was significant in infantile esotropia patients(p=0.013). Patients who could see fly test stereoscopically had smaller suppression scotoma in 4 dot test than patients who could not(p=0.03). The difference was not significant in 3D attractions. Conclusion:3D attractions have crossed large disparity and protruded image, therefore they tend to be viewed stereoscopically easily. Size of suppression scotoma, visual angle and disparity may be responsible for the difference.
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