初期白内障における愁訴と高次波面収差

Visual disturbance and wavefront aberration in incipient cataract

　初期白内障における手術希望者の愁訴と高次収差の関係を検討した。初期白内障があり，矯正視力0.8以上の70例95眼を2群に分けた。白内障手術を希望する48眼と希望しない47眼である。平均年齢は，前群68±9歳，後群66±7歳であった。眼球光学系全体と角膜の波面収差を測定し高次収差を比較した。手術希望群に羞明，霧視，複重視，色異常についてアンケート調査を行い，愁訴を強度と弱度の2群に分けて高次収差を比較した。眼球光学系全体の高次収差は，手術希望群0.272μm，非希望群0.201μmであり有意差があった（p＜0.001）。羞明と霧視の強度群では，弱度群よりも眼球光学系全体の高次収差が有意に高かった（p＜0.01）。初期白内障での高次収差は手術希望の有無と関連し，愁訴を客観的に評価できる可能性がある。

　Purpose：To evaluate visual disturbance as related to higher-order aberrations in patients with intention to surgery for incipient cataract. Cases and Method：A total of 95 eyes in 70 patients entered the study. As inclusion criteria,they had incipient cararact and best corrected visual acuity of 0.8 or over. The series comprised 48 eyes with intention to surgery and 47 eyes without. The ages averaged 68±9 years in the former group and 66±7 years in the latter. Ocular and corneal higher-order aberrations were measured. Patients hoping surgery were asked by questionnaire regarding photophobia,hazy vision,diplopia,and dischromatopsia. The severity of subjective symptoms was graded into two groups. Results：Ocular higher-order aberration averaged 0.272μm in patients hoping surgery and 0.201μm in those hoping no surgery. The difference was significant（p＜0.001）. Ocular higher-order aberration was significantly higher in the group with severer photophobia and hazy vision（p＜0.01）. Conclusion：Higher-order aberrations in incipient cataract are related with intention for surgery. The higher-order aberrations may be of help to objectively assess visual disturbance.