千葉県広域調査によるスギ花粉浮遊量とアレルギー性結膜炎の相関

Correlation between allergic conjunctivitis and air-borne pollens of Japanese cedar in Chiba prefecture

　1982年1月より1985年4月までに千葉県内眼科医を受診したアレルギー性結膜炎と思われる患者3,744名を集計し，千葉県におけるスギ花粉飛散量と比較・検討を行った．男女比は2：3と女性に多く，年齢別では20歳未満に多く，花粉飛散状況と一致した受診状況がみられた．従来花粉症は男児と30歳台の女性に多いと報告されていたが，今回の我々の調査でも20歳未満に多く，また30歳台にも比較的多くみられ，花粉症を含むアレルギー性結膜炎については学校保健の面からもその予防，治療について検討すべき点があると思われた．

We evaluated the possible relationship between the incidence of allergic conjunctivitis and the number of pollens of Japanese cedar floating in the air. A total of 3,744 patients with allergic conjunctivitis were analyzed based on reports from practising ophthalmologists in Chiba Prefecture during a 40-month period through April, 1985. Concurrently, the airborne pollens were counted during the same period.

There was a preponderance of females over males at the ratio of 3 : 2. Subjects under 20 years of age tended to manifest allergic conjunctivitis. Though the peak occurrence of allergic conjunctivitis differed for each year, there was a definite parallelism between the pollen count and the incidence and timing of allergic conjunctivitis. Our findings seemed to suggest that the allergic conjunctivitis can be predicted on the basis of airborne pollen count.

Rinsho Ganka (Jpn J Clin Ophthalmol) 40(2) : 165-168, 1986