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題名 | 不同視力對外斜視手術結果的影響=The Outcome of Strabismus Surgery in Exotropic Patients with Different Visual Status |
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作者 | 沈秉衡; 王俊元; | 書刊名 | 中華民國眼科醫學會雜誌 |
卷期 | 38:4 1999.12[民88.12] |
頁次 | 頁651-655 |
分類號 | 416.7551 |
關鍵詞 | 外斜視手術; Exotropia; Overcorrection; Exodeviation; |
語文 | 中文(Chinese) |
中文摘要 | 根據研究,雙眼視力正常的外斜視病人,經手術治療以後,隨著時間,眼球仍可 能會漸漸向外偏轉。故學者多主張手術時要適量的過度矯正。此篇報告的目的是:長期追蹤 不同視力的外斜視病患。其手術後,眼球逐漸向外偏轉的情況、及手術時過度矯正所需的量, 與視力正常者比較有無不同。我們收集了30位視力不佳的外斜視病人,分為兩組:第一組(11 位)為從小視力不佳的弱視患者;第二組(19位)為原本視力正常,後來因為外傷等因素,造 成次發性視力不佳的病患。另外收集了71位視力正常的外斜視病人,作為對照組(以第三組 表示)。這三組的手術成功率分別為第一組63.6%、第二組52.3%、及對照組83.3%。手術兩 年後,眼球向外偏轉的量,看遠為:11、12、4PD;看近為16、16、7PD。視力不佳的外斜視 病人,術後向外偏轉角度明顯視力正常者大。所以視力不佳的外斜視病人,手術時矯正的量, 應比視力正常者為大,過度矯正的範圍建議在7-20PD之間。 |
英文摘要 | Despite the presence of good binocular vision, surgically corrected exotropia may show a gradual outward shift with time. The purpose of this study is to compare long-term exodeviation angle after surgery in monocular poor vision patients with good vision patients and to find out surgical guideline. 30 exotropic patients with poor monocular vision treated surgically from 1992 to 1996 (age range from 9 to 54) were divided into 2 groups. Group 1 (11 patients): amblyopia; group 2 (19 patients): previous good vision with secondary sensory deprivation. Age-matched patients (71 patients) with good binocular vision were group 3. A successful surgical result was defined as +/- 10 prism diopters or less. In this study, the surgical success rate was 63.6%, 52.3%, and 83.3%, in group 1, 2 and 3. In two years follow up, distant exodeviation were 11, 12, 4 prism diopters; near exodeviation were 16, 16, 7 prism diopters in group 1, 2, and 3. The angle of gradual exodeviation in poor vision patients (including group 1 and 2) was significantly larger than in good vision patients. In conclusion, augmented surgery in visual deprivation patients to create early postoperative over-correction was suggested. The range of overcorrection is between 7 to 20 PD. |
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