中华眼底病杂志
中華眼底病雜誌
중화안저병잡지
CHINESE JOURNAL OF OCULAR FUNDUS DISEASES
2009年
5期
364-367
,共4页
近视%退行性/并发症%注视%眼/病理生理学%视野检查法
近視%退行性/併髮癥%註視%眼/病理生理學%視野檢查法
근시%퇴행성/병발증%주시%안/병리생이학%시야검사법
Myopia%degenerative/complications%Fixation%ocular/pathophysiology%Perimetry
目的 探讨高度近视眼因黄斑病理损害形成中心暗点以及丧失中心视力后偏心固视的形成规律,确定偏心注视点的优势位置.方法 应用微视野计(MP-1)对因黄斑病变形成偏心固视的40例高度近视患者的54只眼作固视检查.利用正常成人中心固视的90%置信椭圆,确定偏心固视相对于中心凹的位置.根据观察到的偏心固视的位置,将所有患眼分为preferred retinal locucs(PRL)优势组和PRL非优势组;并将两组视力作统计学比较.结果 54只高度近视眼中,中心视力丧失后偏心固视点形成在暗点下方视野者24只眼,占本组患眼的44.44%;左侧19只眼,占35.19%;上方6只眼,占11.11%;右侧5只眼,占9.26%.双眼均形成偏心固视者14例,其中13例双眼偏心固视模式一致,均为下方者7例,占双眼偏心固视者的50.00%;均为左侧者5例,占35.71%;均为上方者1例,占7.14%.偏心固视位于下方、左侧视野组与偏心位置位于右侧和上方的非优势组之间比较.其视力差异无统计学意义(F=0.144,P>0.05).结论高度近视患者偏心固视会形成在尽量靠近中心凹有功能的视网膜.下方视野是形成偏心固视的优势位置.
目的 探討高度近視眼因黃斑病理損害形成中心暗點以及喪失中心視力後偏心固視的形成規律,確定偏心註視點的優勢位置.方法 應用微視野計(MP-1)對因黃斑病變形成偏心固視的40例高度近視患者的54隻眼作固視檢查.利用正常成人中心固視的90%置信橢圓,確定偏心固視相對于中心凹的位置.根據觀察到的偏心固視的位置,將所有患眼分為preferred retinal locucs(PRL)優勢組和PRL非優勢組;併將兩組視力作統計學比較.結果 54隻高度近視眼中,中心視力喪失後偏心固視點形成在暗點下方視野者24隻眼,佔本組患眼的44.44%;左側19隻眼,佔35.19%;上方6隻眼,佔11.11%;右側5隻眼,佔9.26%.雙眼均形成偏心固視者14例,其中13例雙眼偏心固視模式一緻,均為下方者7例,佔雙眼偏心固視者的50.00%;均為左側者5例,佔35.71%;均為上方者1例,佔7.14%.偏心固視位于下方、左側視野組與偏心位置位于右側和上方的非優勢組之間比較.其視力差異無統計學意義(F=0.144,P>0.05).結論高度近視患者偏心固視會形成在儘量靠近中心凹有功能的視網膜.下方視野是形成偏心固視的優勢位置.
목적 탐토고도근시안인황반병리손해형성중심암점이급상실중심시력후편심고시적형성규률,학정편심주시점적우세위치.방법 응용미시야계(MP-1)대인황반병변형성편심고시적40례고도근시환자적54지안작고시검사.이용정상성인중심고시적90%치신타원,학정편심고시상대우중심요적위치.근거관찰도적편심고시적위치,장소유환안분위preferred retinal locucs(PRL)우세조화PRL비우세조;병장량조시력작통계학비교.결과 54지고도근시안중,중심시력상실후편심고시점형성재암점하방시야자24지안,점본조환안적44.44%;좌측19지안,점35.19%;상방6지안,점11.11%;우측5지안,점9.26%.쌍안균형성편심고시자14례,기중13례쌍안편심고시모식일치,균위하방자7례,점쌍안편심고시자적50.00%;균위좌측자5례,점35.71%;균위상방자1례,점7.14%.편심고시위우하방、좌측시야조여편심위치위우우측화상방적비우세조지간비교.기시력차이무통계학의의(F=0.144,P>0.05).결론고도근시환자편심고시회형성재진량고근중심요유공능적시망막.하방시야시형성편심고시적우세위치.
Objective To investigate the distribution of the preferred retinal locus (PRL) of eccentric fixation in eyes with high myopia. Methods A total of 40 highly myopic patients (54 eyes) with eccentric fixation were examined by MP-1 microperimeter to identify the PRL. The position of PRL relative to the fovea was estimated using the 90% confidence ellipse of normal adult foveal fixation. The differences of visual acuity between "desirable" and "undesirable" PRL were tested by analysis of variance. Results In 54 eyes with high myopia, 24 eyes (44.44%) had PRL of eccentric fixation below the scotoma after loss of central vision; 19 eyes (35.19%) had a left-field PRL; 6 eyes (11.11%) had an upper-field PRL; and 5 eyes (9.26%) had right-field PRL. In 14 patients who had binocular eccentric fixation, 13 had the same fixation pattern in both eyes, including lower-field PRL in 7 (50.00 %), left-field PRL in 5 (35.71 %), and upper-field PRL in 1 patient (7.14%). The difference of visual acuity between lower- and left-field PRL group and right- and upper-field undesirable PRL group was not statistically significant (F=0.144, P > 0.05). Conclusions The eccentric fixation in eyes with high myopia is usually situated as near as possible to the fovea. The optimal PRL is inferior visual field.
