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要約 目的:瞼裂露出部のVogt柵(palisades of Vogt)は下方よりも不明瞭である。その形態を細隙灯顕微鏡で比較した。対象と方法:3~97歳の外来患者284名のVogt柵を細隙灯顕微鏡に装着したCCDカメラで撮影し,瞼裂露出部と下方のVogt柵の数を検索した。結果:Vogt柵は,瞼裂露出部では細い断裂した線で強膜に密着し,下方では太い連続した直線で強膜から浮いていた。瞼裂露出部では色素で縁どりされたVogt柵はなかった。混濁がないVogt柵は,0.5mm当たり瞼裂露出部では4.1本で長さが1.7mmであり,下方では4.2本,1.4mmであった。混濁があるVogt柵は瞼裂露出部では本数で22%,長さで76%減少し,下方のVogt柵では本数で12%,長さで36%減じた。瞼裂斑と翼状片の部位にはVogt柵はなかった。結論:瞼裂露出部のVogt柵は平面的で断続した細い線を呈し,色素の縁どりがなく不明瞭であった。混濁がないVogt柵の本数と長さは下方と差がなく,混濁があるVogt柵は本数が少なく,短かった。
Abstract. Purpose:The palisades of Vogt are more obvious in the lower sector than in the horizontal sector. This study was made to compare their configuration between lower and horizontal sectors. Cases and Method:Slit-lamp photography was made on 284 outpatients aged from 3 to 97 years. The length and the number of palisades were counted in the lower and horizontal sectors. Results:The palisades were adherent to the sclera forming thin and intermittent lines in the horizontal sector. They were present more anterior to the sclera and formed thick continuous lines. Palisades without opacity were 1.7 mm long and numbered 4.1 per 0.5 mm in the horizontal sector. They were 1.4 mm long and numbered 4.2 in the lower sector. In eyes with limbal opacity,they decreased by 22% in number and by 76% in length in the horizontal sector,and by 12% and 36% respectively in the lower sector. They could not be observed in eyes with pinguecula or pterygium. Conclusion:Palisades of Vogt were less apparent in the horizontal than in the lower sector.
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