2009年上海市宝山区大场社区60岁及以上人群盲和低视力患病率调查

目的 探讨上海市宝山区大场社区60岁及以上人群的盲和低视力患病率、致盲原因及其相关因素。方法 横断面现况调查研究。由上海市眼病防治中心和上海市宝山区疾病预防控制中心于2009年10至12月期间对上海市宝山区大场社区60岁及以上并在当地居住10年以上的常住户籍人口进行随机整群抽样调查。对调查对象完成视力、眼压、验光、裂隙灯显微镜、免散瞳数字眼底照相等检查,采用世界卫生组织视力损伤标准和日常生活视力和视力损伤标准确立盲或低视力,并明确主要致盲原因。组间率的比较采用卡方检验。结果 实际受检4545人,受检率为87.42％。受检人群均为近10年内随着城市化进程从原农村人口转变而来的城市人口。按照世界卫生组织视力损伤标准：双眼盲30人,患病率0.67％;双眼低视力145人,患病率3.19％。白内障、黄斑变性、眼球萎缩或缺如、青光眼、糖尿病视网膜病变（或角膜病）是前5位致盲眼病。女性低视力患病率高于男性,差异有统计学意义(x2 =4.88,P＜0.05)。按照日常生活视力和视力损伤标准：双眼盲39人,患病率0.86％,双眼低视力401人,患病率8.82％;75岁后成为视力损害的高速发展期。白内障、未矫正的屈光不正、黄斑变性、眼球萎缩或缺如、青光眼是前5位致盲原因。女性低视力患病率高于男性,差异有统计学意义(x2=13.345,P＜0.01)。结论 在上海市城市化进程较快的老龄化社区中,白内障、未矫正的屈光不正、黄斑变性是引起日常生活视力盲的前3位原因,女性低视力患病率明显高于男性。对这类社区居民需要进行更多的有针对性眼的保健教育与服务工作。     

上海市北新泾街道60岁及以上人群盲和视力损伤的现况调查

目的 调查上海市北新泾街道60岁及以上老年人低视力、盲的患病率及致盲原因,并与以前调查结果相比较,评价近年该地区实施防盲治盲项目的 效果.方法 应用横断面研究的流行病学调查方法.由上海交通大学附属第一人民医院和上海市长宁区北新泾社区卫生服务中心于2007年11月至2008年4月采用整群随机抽样方法在上海市长宁区北新泾街道抽取8个社区,对其中所有的60岁及以上老年人进行调查,检查日常生活视力和针孔镜矫正视力,应用裂隙灯显微镜、直接检眼镜和眼底照相机等仪器检查受检者外眼、眼前节及眼底等情况.观察低视力及盲的患病情况,分析致盲的主要原因.正式调查前先进行预试验,通过计算kappa值进行不同检查者诊断结果的重复性检验,保证调查质量.结果 在应检录4153人中,受检人数为3851人,受检率为92.73%.按照世界卫生组织视力损伤标准:双眼盲29人,其中男性11人(占37.93%)、女性18人(占62.07%).双眼低视力104人,其中男性37人(占35.58%)、女性67人(占64.42%).双眼盲和双眼低视力的患病率分别为0.75%和2.70%.致盲的主要原因依次为:黄斑变性、白内障、角膜瘢痕或混浊及视网膜脱离.按照日常生活视力和视力损伤标准:重度双眼盲61人,其中男性20人(占32.79%)、女性41人(占67.21%).轻度双眼盲66人,其中男性27人(占40.91%)、女性39人(占59.09%).单眼盲276人,其中男性120人(占43.48%)、女性156人(占56.52%).重度双眼盲、轻度双眼盲、单眼盲的患病率分别为1.58%、1.71%和7.17%.致盲的主要原因依次为:黄斑变性、白内障、屈光不正及角膜瘢痕或混浊.结论 黄斑变性仍是致盲的首要原因,眼底病患病率逐渐上升,社区防盲项目已初显成效.     

乌鲁木齐市老年公寓中50岁及以上人群盲与低视力调查

目的了解乌鲁木齐市19所正式登记的老年公寓入住50岁及以上人群的盲与低视力构成比及主要致盲原因。设计横断面调查。研究对象乌鲁木齐市19所老年公寓中50岁及以上符合入选标准的475人。方法对符合此次调查准入标准的475人进行常规日常生活视力、小孔视力的检查。筛选出盲和低视力的患者,对其眼病进行相应辅助检查,分析致盲的主要原因。主要指标盲与低视力构成比。结果被调查的475人中,按照A标准:双眼盲构成比为6.9%,双眼低视力的构成比为8.4%,单眼盲构成比为14.9%,单眼低视力构成比为12.0%。按照B标准:视力损伤构成比为17.1%,单眼盲、轻度盲和重度盲构成比分别为15.4%、2.9%和6.9%。致盲的主要病因依次为白内障(59.87%)、屈光不正(11.84%)、眼底病变(15.13%)、角膜混浊(5.92%)、眼球萎缩或缺如(2.96%)、青光眼(2.63%)、不确定(1.64%)。结论乌鲁木齐市老年公寓50岁及以上人群,随年龄增加易患致盲性眼病。白内障为主要致盲原因。     

上海市宝山区大场镇老年人屈光矫正前后视力损伤情况调查

目的 分析上海市宝山区大场镇60岁及以上人群中屈光矫正前后的视力损伤情况.方法 流行病学调查.2009年11～12月采取整群抽样的方法对上海市宝山区大场镇目标人群进行盲和视力损伤的流行病学调查.主要包括视力及裂隙灯检查、小瞳验光、问卷调查等.视力损伤按照WHO的标准进行分析.同时也分析了与可矫正的视力损伤有关的人群特征.对不同性别、不同年龄组可矫正的视力损伤患病率进行比较时采用卡方检验,各独立变量与可矫正视力损伤患病率之间的相关性采用单因素比值比(OR)方法.结果 本调查共纳入5199人,实际受检4545人,受检率为87.42％.日常生活视力中盲与视力损伤的患病率分别为0.86％和8.82％;屈光矫正后,盲与视力损伤患病率分别为0.66％和3.01％;可矫正视力损伤率为5.81％(264/4545).年龄与性别是可矫正视力损伤的主要危险因素.通过对264例可矫正的视力损伤的病因分析,发现单纯屈光不正为114例(43.18％),合并白内障121例(45.83％),合并黄斑变性21例(7.95％),合并糖尿病视网膜病变4例(1.52％),合并青光眼3例(1.14％),合并角膜病1例(0.38％).眼镜覆盖率为44.12％.随着年龄的增大,眼镜覆盖率下降,男性眼镜覆盖率高于女性.结论 屈光不正是老年人视力损伤的重要因素,屈光矫正是诊断盲和视力损伤的必不可少的步骤.     

安徽省两地人群盲和低视力及眼病的流行病学抽样调查（一）

目的方法结果结论对安徽省两地人群盲和低视力及眼病的流行病学情况进行抽样调查。选择阜阳市颍州区和宣城市绩溪县,采用随机整体抽样方法,对所属居民进行眼部及其他情况的调查。两地的受检人数和受检率分别为3336人（91.40%）和3602人（92.10%）,达到抽样调查要求;两地双眼盲、单眼盲、双眼低视力和单眼低视力的患病率分别为1.05%和0.69%、1.71%和1.25%、1.02%和0.97%、0.87%和0.89%;两地盲和低视力的主要原因分别为：白内障、弱视、青光眼和白内障、眼球萎缩/缺如、青光眼;两地主要眼病都为：屈光不正、白内障、翼状胬肉和沙眼;两地的白内障手术率分别为600和278。据不完全资料估计我省盲和低视力的患病率远高于全国平均水平,盲和低视力的高发人群为50岁以上老年人,女性,孤寡,文盲,低收入者,白内障仍是最主要致盲原因,屈光不正/弱视已日益成为影响人民特别是青少年视力的最主要因素,广泛宣传正确用眼方式,推广青少年正确验光配镜方法,提高相关人员验光配镜水平对于有效降低弱视致残率至关重要。     

南通市新城桥街道60岁及以上人群盲和低视力的现况调查

目的调查江苏省南通市城市人口中60岁及以上人群盲和低视力的患病率及其原因。方法采用随机整群抽样方法,抽取新城桥街道14个社区中的8个,并对所有60岁及以上人群进行检查。分别检查小孔视力和日常生活视力,应用裂隙灯显微镜和直接检眼镜等仪器检查受检者外眼、眼前节及眼底等情况。正式调查前先进行预试验。结果共检录3352人,受检人数为3040人,应答率90．69％。按小孔视力和世界卫生组织视力损伤标准,双眼盲和低视力患病率分别为1．35％和1．84％,其中女性分别为1．92％和2．33％,男性为0．66％和1．24％;盲和低视力患病率随着年龄的增长而增加;致盲和低视力的首要原因为白内障。按日常生活视力和视力损伤标准,双眼盲和视力损伤的患病率分别为1．58％和13．59％,其中女性分别为2．10％和15．98％,男性为0．95％和10．66％;盲和视力损伤的患病率亦随年龄的增长而增加;致双眼盲的首要原因亦为白内障。结论南通市60岁及以上城市人群盲的患病率低于华北、华南及西部地区。女性与文盲的盲和低视力患病率分别高于男性与非文盲。南通市城市人口中致盲的主要原因依次为白内障、眼底异常、屈光不正及角膜瘢痕或混浊等。     

上海浦东三林镇老年人盲和低视力流行病学调查

目的调查上海市浦东新区三林镇70岁及以上老年人盲和低视力的患病率及致病原因。方法以世界卫生组织制定的分级为标准,使用针孔镜矫正视力,统计其盲与低视力患病率,分析盲及低视力的主要病因。结果盲及低视力患病率分别为2.4%和8.8%,致盲和低视力的眼病均以白内障居首位,其次为老年性黄斑变性、角膜病和青光眼等。结论手术治疗白内障是降低盲与低视力患病率的主要措施,老年性黄斑变性等难治性眼病的防治亦应成为防盲治盲工作的重点。     

广州市萝岗区盲与低视力流行病学调查

目的 调查广州市萝岗区年龄≥50岁人群盲与低视力的患病率及主要致病原因.方法 采用整群抽样方法 ,按世界卫生组织盲与低视力分类标准,对广州市萝岗区50岁及以上人群进行问卷调查,视力检测初筛后对针孔镜下视力低于0.3者,由眼科医师做视功能、眼前后节形态检查及主要致盲原闪诊断.结果 共录入人数4532人,实际受检4126人,受检率91.04%.其中双眼肓患病率为1.91%,单眼盲患病率5.96%,双眼低视力患病率8.41%.随着年龄增加,盲与低视力患病率明显升高.70岁年龄组双眼肓是50岁年龄组的25.5倍,差异具有统计学意义(P<0.01).在盲与低视力人群中致病原因的前几位依次是白内障(47.9%),眼底病(20.4%),屈光不正(9.52%),角膜病(7.59%).另外,脑垂体瘤致盲占0.74%.结论 广州市萝岗区≥50岁老年人群盲与低视力的首要原因为白内障,故降低自内障的患病率是该地区防旨治盲的关键,另外眼底病在该地区也是重点防治的疾病.     

杭州市下城区50岁及以上人群眼病流行病学调查

目的：调查杭州市下城区50岁及以上人群眼部疾病的患病情况及盲和中、重度视力损伤的患病率及病因。方法：横断面调查研究。于2015年4-8月期间采用整群随机抽样方法,从杭州市下城区8个街道共抽取50岁及以上人群2 953例,对其进行视力、屈光状态、眼压等检查,分析不同年龄、性别和受教育程度人群盲和中、重度视力损伤的患病率及病因。各数据间的比较采用 χ 2 检验和趋势χ 2 检验。结果：共2 363例接受并完成了检查,受检率为80%,人群中盲和中、重度视力损伤的患病率为1.6%（38例）,并随着年龄增长而上升（ χ 2 =38.094,P < 0.001）;文化程度越低,盲的患病率越高（ χ 2 =39.497,P < 0.001）。导致盲和中、重度视力损伤的主要原因有眼底异常（30眼,39.5%）、白内障（26眼,34.2%）、青光眼（12眼,15.8%）等。人群中眼病患病率由高到低依次为未矫正的屈光不正（2 048例,86.7%）、白内障（1 065例,44.7%）、翼状胬肉（219例,9.3%）、年龄相关性黄斑变性（81例,3.5%）、青光眼（52例,2.2%）、斜视（46例,2.0%）、糖尿病视网膜病变（39例,1.7%）。结论：杭州市下城区50岁及以上人群常见的眼部疾病是未矫正的屈光不正、白内障。盲和中、重度视力损伤的患病率较低,其中眼底异常、白内障是导致盲和中、重度视力损伤的主要原因。     

上海市盲校学生病因及视力调查分析

目的通过对上海盲校学生病因及视力调查分析,为防治儿童盲提出依据。方法对盲校224名学生进行矫正视力、裂隙灯、眼底镜、眼压等眼部检查,并对病因和视力进行分析。结果224例盲校学生中97例为盲,低视力97例,矫正视力≥0.3者30例。第1位致盲眼病是早产儿视网膜病变(retinopathyofprematurity,ROP)占32.99%;低视力病因中第1位为先天性白内障术后无晶状体占21.65%;124例患屈光不正学生中配戴矫正眼镜54例。结论上海盲校学生中ROP已成为第1位致盲性眼病,提示建立ROP筛查网络和开展综合防治的重要性。先天性白内障、青光眼的早期诊断和治疗,提高手术成功率及屈光不正儿童的早期验光配镜对于防治儿童盲是十分重要的。     

Socioeconomic Disparities in Cataract Prevalence,Characteristics, and Management

ABSTRACT

Purpose: To review the current literature on socioeconomic disparities relationship with cataract prevalence, characteristics, and management. Summary: Cataracts are an important cause of preventable visual impairment in both the developing and industrialized world. Cataract surgery is a highly effective operation with an excellent risk profile. Furthermore, cataract surgery has been shown to have significant positive functional, social, and economic implications for patients. Several medical conditions have been shown to have correlation with socioeconomic factors and cataract is among several forms of visual impairment that demonstrate this relationship. Disparities in prevalence, clinical characteristics, and management are documented in the ophthalmic literature. A better understanding of these socioeconomic factors and their clinical relevance is critical to alleviating the burden of cataract-related visual impairment in an aging population.     

Low vision service models in Alberta: innovation, collaboration, and future opportunities

As Alberta's population ages over the next 20 years, the number of older adults experiencing age-related blindness or vision loss is likely to at least double. To prevent a crisis in low vision service provision, we need to build upon, and extend, existing partnerships between the CNIB and ophthalmologists, optometrists, government policy makers, and other service providers. Future service models for low vision rehabilitation should also emphasize interventions such as counselling and peer support that enhance quality of life. With thoughtful planning, adequate funding, and involvement of all stakeholders, Alberta has the potential to become a world leader in the field of low vision treatment and rehabilitation.     

School vision screening, ages 5–16 years: the evidence-base for content, provision and efficacy

The optometric profession in the UK has a major role in the detection, assessment and management of ocular anomalies in children between 5 and 16 years of age. The role complements a variety of associated screening services provided across several health care sectors. The review examines the evidence-base for the content, provision and efficacy of these screening services in terms of the prevalence of anomalies such as refractive error, amblyopia, binocular vision and colour vision and considers the consequences of their curtailment. Vision screening must focus on pre-school children if the aim of the screening is to detect and treat conditions that may lead to amblyopia, whereas if the aim is to detect and correct significant refractive errors (not likely to lead to amblyopia) then it would be expedient for the optometric profession to act as the major provider of refractive (and colour vision) screening at 5-6 years of age. Myopia is the refractive error most likely to develop during primary school presenting typically between 8 and 12 years of age, thus screening at entry to secondary school is warranted. Given the inevitable restriction on resources for health care, establishing screening at 5 and 11 years of age, with exclusion of any subsequent screening, is the preferred option.     

Meridional Anisotropy of Foveal and Peripheral Resolution Acuity in Adults With Emmetropia,Myopia, and Astigmatism

PurposeTo quantify astigmatism-related meridional anisotropy in visual resolution at central, nasal, and inferior visual fields.MethodsThree groups of young adults (range, 18–30 years) with corrected-to-normal visual acuity (logMAR 0) were recruited: (1) myopic astigmats (MA): spherical-equivalent error (SE) < −0.75D, with-the-rule astigmatism ≥ 2.00D, n = 19; (2) simple myopes (SM): SE < −0.75D, astigmatism ≤ 0.50D, n = 20; and (3) emmetropes (EM): SE ± 0.50D, astigmatism ≤ 0.50D, n = 14. Resolution acuity was measured for the horizontal and vertical gratings at central and peripheral visual fields (eccentricity: 15°) using a 3-down 1-up staircase paradigm. On- and off-axis refractive errors were corrected by ophthalmic lenses.ResultsThe MA group exhibited meridional anisotropy preferring vertical gratings. At the central field, the MA group had better resolution acuity for vertical than horizontal gratings, and their resolution acuity for horizontal gratings was significantly worse than the SM and EM groups. At peripheral visual fields, both the SM and EM groups showed better resolution acuity for the radial (i.e., nasal field: horizontal gratings; inferior field: vertical gratings) than tangential orientation. However, the MA group tended to have better resolution acuity for the tangential orientation (i.e., vertical gratings), and their resolution acuity for horizontal gratings was significantly lower than the SM and EM groups at the nasal field. No significant differences were found in the inferior field among the three groups.ConclusionsThis study provided evidence of astigmatism-related meridional anisotropy at the fovea and nasal visual fields, underscoring the significant impact of astigmatism on orientation-dependent visual functions.     

The Prevalence of Anisometropia,Amblyopia and Strabismus in Schoolchildren of Shiraz,Iran

Purpose: To determine the prevalence of amblyopia, anisometropia, and strabismus in schoolchildren of Shiraz, Iran.

Materials and Methods: A random cluster sampling was used in a cross-sectional study on schoolchildren in Shiraz. Cycloplegic refraction was performed in elementary and middle school children and high school students had non-cylcoplegic refraction. Uncorrected visual acuity (UCVA) and best corrected visual acuity (BCVA) were recorded for each participant. Anisometropia was defined as spherical equivalent (SE) refraction difference 1.00D or more between two eyes. Amblyopia was distinguished as a reduction of BCVA to 20/30 or less in one eye or 2-line interocular optotype acuity differences in the absence of pathological causes. Cover test was performed for investigating of strabismus.

Results: Mean age of 2638 schoolchildren was 12.5 years (response rate?=?86.06%). Prevalence of anisometropia was 2.31% (95% confidence interval [CI], 1.45 to 3.16). 2.29% of schoolchildren (95% CI, 1.46 to 3.14) were amblyopic. The prevalence of amblyopia in boys and girls was 2.32% and 2.26%, respectively (p?=?0.945). Anisometropic amblyopia was found in 58.1% of the amblyopic subjects. The strabismus prevalence was 2.02% (95% CI, 1.18 to 2.85). The prevalence of exotropia and esotropia was 1.30% and 0.59%, respectively.

Conclusions: Results of this study showed that the prevalence of anisometropia, amblyopia, and strabismus are in the mid range. The etiology of amblyopia was often refractive, mostly astigmatic, and non-strabismic. Exotropia prevalence increased with age and was the most common strabismus type.     

Visual rehabilitation of patients with advanced stages of glaucoma,optic atrophy,myopia or retinitis pigmentosa

Ninety-six patients with advanced stages of glaucoma, optic atrophy, myopia or retinitis pigmentosa (RP) who could not manage with ordinary spectacles or simple magnifying aids were taken care of at the Low Vision Clinic for rehabilitation and followed for an average of 3.6 years (the glaucoma group) up to an average of 6.0 years (the optic atrophy group). They were given high power optical aids and subjected to educational training in the proper use of these aids for best utilization of residual vision. Many of them (for optic atrophy as high a percentage as 40.7) were taught to use extra macular retina by means of eccentric viewing technique. The mean age of the oldest group, the glaucoma patients, was 69.3 years. The three other groups were about 20 to 25 years younger, on an average. (Another 35 patients) were seen for the first series of visits but could not be followed up, the main reasons being death (13 patients) and moving out of the area (9 patients).The mean power of the aids (mainly telescopes) used for distance vision was 2.1 × (RP)-5.3 x (optic atrophy). Increased near addition and hyperocular lenses were the main aids for reading and near vision, the mean power being 17.0 dioptres (glaucorna)–23.5 dioptres (RP)(4.3 × –5.9 x). Aids were also provided for intermediate distance and for spot use. The mean number of series of visits was 3.1 (myopia)–3.5 (glaucoma) and the average number of l h training sessions 2.2 (glaucoma)–2.5 (optic atrophy, RP) per series of visits.With aids and educational training, the mean visual acuity improved on the first series of visits from 0.31 to 0.60 for the glaucoma group, from 0.19 to 0.70 for the optic atrophy group, from 0.12 to 0.68 for the myopes and from 0.35 to 0.52 for the RP group. After the last series of visits acuity was still as good as 0.51, 0.61, 0.73 and 0.45, respectively.The number of individuals able to read newspaper text increased from 16.1% to 100.0% for the glaucoma patients, from 14.8% to 100.0% for the optic atrophy patients, from 75.0% to 100.0% for the myopes, and from 50.0% to 95.5% for the RP patients.The results show clearly that the methods used for rehabilitation of patients with glaucoma, optic atrophy, myopia or RP through optical aids and sessions of educational training are very successful, with substantial improvement of life quality.     

Visual function tests, eye disease and symptoms of visual disability: a population-based assessment

Purpose : To examine associations between eye disease and tests of visual function with self‐reported visual disability. Methods : The Blue Mountains Eye Study is a cross‐sectional census‐based survey of eye disease in two postcode areas in the Blue Mountains, west of Sydney, Australia. Of 4433 eligible residents, 3654 (82.4%) participated. Subjects had a detailed eye examination, including tests of visual acuity, contrast sensitivity, disability glare and visual field. Lens and retinal photographs were taken and graded according to standardized protocols for presence of cataract, early and late age‐related maculopathy, glaucoma, diabetic retinopathy, retinal vein occlusion and other eye diseases. An interviewer‐administered questionnaire included questions about perception of visual disability. Results : Scores on all tests of visual function significantly decreased with age (P < 0.0001). This decrease persisted for all tests except disability glare after excluding subjects with identifiable eye disease. The presence of one or more eye diseases was significantly associated with all (self‐reported) measures of visual disability (trouble driving at night, difficulty recognizing a friend across the street, reading a newspaper or recognizing detail on television); mixed cataract (cortical and nuclear, or posterior subcapsular and nuclear) was associated with trouble driving at night and difficulty recognizing a friend across the street. A 10‐letter (two‐line) decrease in best corrected or presenting visual acuity was significantly associated with all self‐reported measures of visual disability, as was a two‐step decrease in contrast sensitivity. A five‐point increase in points missing in the visual field was weakly but significantly associated with all self‐reported measures of visual disability except trouble driving at night. Conclusions : Visual function declines with age. Impaired visual function was strongly, and eye disease relatively weakly associated with reports of visual disability.     

Performance of a new, 3D-monitor based random-dot stereotest for children under 4 years of age

Background The aim of this study was to determine the performance of a new, 3D-monitor based, objective stereotest in children under the age of four. Methods Random-dot circles (diameter 10 cm, crossed, disparity of 0.34°) randomly changing their position were presented on an 3D-monitor while eye movements were monitored by infrared photo-oculography. If ≥3 consecutive stimuli were seen, a positive response was assumed. One hundred thirty-four normal children aged 2 months to 4 years (average 17±15.3 months) were examined. Results Below the age of 12 months, we were not able to obtain a response to the 3D stimulus. For older children the following rates of positive responses were found: 12–18 months 25%, 18–24 months 10%, 24–30 months 16%, 30–36 months 57%, 36–42 months 100%, and 42–48 months 91%. Multiple linear logistic regression showed a significant influence on stimulus recognition of the explanatory variables age (p<0.00001) and child cooperation (p<0.001), but not of gender (p>0.1). Conclusions This 3D-monitor based stereotest allows an objective measurement of random-dot stereopsis in younger children. It might open new ways to screen children for visual abnormalities and to study the development of stereovision. However, the current experimental setting does not allow determining random-dot stereopsis in children younger than 12 months. This study was sponsored by OPOS-Foundation, St. Gallen. The authors have no financial interest concerning this study.