霰粒腫の非接触型マイボグラフィ所見

Findings of chalazion by noncontact meibography

要約　目的：霰粒腫の非接触型マイボグラフィ所見の特徴を明らかにすること。

対象と方法：霰粒腫67例の非接触型マイボグラフィを撮影し，病変の明るさを正常部との相対値反射強度で評価した。

結果：高反射が25例，低反射が42例と低反射の症例が多かった。病歴30日以下の早期群では44.4％が低反射であったのに対し，31日以上の晩期群では低反射が83.9％と，晩期群でその傾向がより明らかであった（p＝0.0009）。

結論：霰粒腫はマイボグラフィで低反射を呈することが多く，晩期には特に低反射となる傾向が強い。

Abstract　Purpose: To report characteristic findings of chalazion by noncontact meibography.

Cases and Method: This study was made on 67 eyes of chalazion. The series comprised 25 males and 42 females. The age ranged from 1 to 90 years, average 38 years. We used two apparatus to record and analyze the findings：a meibogram（MeiboPen^®）and a camera for infrared photography eliminating light of wavelength longer than 760nm.

Results: Areas of chalazion showed high infrared reflection in 25 eyes, and low reflection in 42 eyes. Low reflection was present in 44％ of cases in whom chalazion persisted for less than 30 days. It was present in 84％ of cases in whom chalazion persisted longer than 30 days. The difference was significant（p＜0.0001）.

Conclusion: Chalazion showed lower infrared reflection in meibography when the lesion persisted longer than 30 days.