糖尿病性網膜症—中心窩周囲の毛細血管網の変化と視力の予後

Diabetic maculopathy: Alteration of perifoveal capillary network and prognosis of visual acuity

　糖尿病性網膜症において，黄斑部の浸出性変化により視力の低下を見た93眼に，螢光眼底造影を行い，perifoveal capillary network（PCN）の障害の進行度と視力との関係を検討した。その結果この血管網の閉塞が著明に進行している眼では，それが軽度である眼に比べ，視力低下は高度であつた。

　次に治療後2年目の視力を75眼について検討すると，血管網の障害が著明な眼では，それが軽度な眼に比べ，視力の予後は不良であつた。

　以上のことから，黄斑部浸出性病変を治療する前のPCNの所見は，治療後の視力を推測する一つの有力なdetaになりうると結論した。

Fluorescein angiography was carried out in 75 eyes with diabetic maculopathy, and the perfusing condition of the perifoveal capillary network was studied with reference to the prognosis of the visual acuity after photocoagulation therapy.

The initial visual acuities of eyes with poorly-perfused capillary network were significantly worse than those with well-perfused capillary network and the former eyes reacted poorly to the treatment.

A conclusion was made that the perfusing condition of the perifoveal capillary network was an important factor related with the prog-nosis of the visual acuity.