眼鏡非装用にて再発した弱視の2症例

Recurrence of amblyopia in two cases following discontinued wearing of eyeglasses for anisometropic hypermetropia

要約　目的：眼鏡非装用にて再発した弱視2症例の報告。

症例：症例1は6歳6か月，男児。右眼の視力低下にて受診。遠視と内斜視を認めたため，弱視治療を2年間施行し視力は右眼矯正1.0pに改善した。その後，眼鏡破損により1年間眼鏡を装用せず，右眼矯正0.5と視力低下をきたし再診した。矯正眼鏡の再処方と遮閉法にて右眼矯正1.0と改善した。症例2は4歳8か月，男児。遠視と内斜視を認め，弱視治療を7年間施行し，視力は右眼矯正1.0と改善した。その後，眼鏡破損により6か月間眼鏡を装用せず，右眼矯正0.4視力と低下をきたし再診した。矯正眼鏡を再処方し，右眼矯正0.8と視力改善がみられた。

結論：2症例とも不同視弱視兼斜視弱視の症例で，このような症例では，弱視治療が終了しても眼鏡装用と通院が重要である。

Abstract　Purpose：To report two cases who showed recurrence of amblyopia after discontinued wearing of eyeglasses for anisometropic hypermetropia.

Cases：Both were boys aged 4 and 6 years respectively. Both complained of unilateral poor visual acuity. One case showed esotropia and hypermetropia in the right eye. Visual acuity improved from 0.1 to 1.0 after pleoptis and wearing of eyeglasses for 7 years. He failed to wear eyeglasses for 6 months, after which visual acuity decreased to 0.4. Prescription of new eyeglasses was followed by improved visual acuity to 0.8. The other case had corrected visual acuity of 0.1 in the right eye and was diagnosed with esotropia and hypermetropia. Pleoptics and wearing of eyeglasses for 2 years resulted in visual acuity of 1.0. Discontinued wearing of eyeglasses for one year was followed by impaired visual acuity to 0.4. Prescription of new eyeglasses resulted in improved visual acuity to 1.0.

Conclusion：These cases illustrate that anisometropic amblyopia may recur after successful pleoptics and wearing of eyeglasses. Prolonged follow-up is needed in such cases.