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The aim of this study was to compare the anterior chamber angle changes after implantation of phakic intraocular lens with and without a central hole for moderate to high myopic eyes in Chinese people.This study enrolled 106 eyes of 54 people with intraocular lens V4 implantation and 105 eyes of 53 people with intraocular lens V4c implantation. Postoperative vault, intraocular pressure, and anterior chamber angle changes were assessed using noncontract tonometer and ultrasound biomicroscope, respectively, at 1, 3, 6, and 12months after the surgery.There were no significant differences (all P > .05) between the 2 groups in the depth of the central vault, intraocular pressure, or the width of anterior chamber angle at any time point post-surgery. The anterior chamber angle width in degree had a baseline of 54.40 ± 10.51 in V4c group, and decreased to 27.80 ± 5.62, 26.95 ± 5.56, 27.32 ± 5.66, 27.04 ± 5.47 at 1, 3, 6, and 12 months post-surgery, respectively. Mean preoperative value of 50.62 ± 11.77 decreased to 27.28 ± 6.53, 26.82 ± 6.03, 26.61 ± 5.80, 26.83 ± 5.76 at 1, 3, 6, 12 months, respectively, in V4 group. It had sufficient evidence (P < .001) that anterior chamber angle will narrow done after surgery, but there were no statistically significant differences within groups at any time point after surgery.The anterior chamber angle changes of the V4c group was essentially equivalent to that of conventional V4 group, although implantation of both models will lead to the decrease in anterior chamber angle width.

Precis: Chinese Glaucoma Study Consortium (CGSC) as the first nationwide glaucoma registry in China, we describe its design, rationale, the geographic distribution of the hospitals, and baseline patient characteristics., Aim: As a leading cause of blindness in China, glaucoma affects 2% to 4% of adults over the age of 40 and will become increasingly prevalent as the population ages. At the national level, there are few reports on the current medical practice for glaucoma patients. CGSC will be considered as the first nationwide glaucoma registry in China. Here we describe its design, rationale, the geographic distribution of the hospitals, and baseline patient characteristics., Methods: From December 21, 2015 to September 9, 2018, CGSC recruited patients with the diagnoses of primary angle-closure suspect, primary angle-closure, primary angle-closure glaucoma, acute primary angle closure, primary open-angle glaucoma (POAG), pigmentary glaucoma (PG), and pseudoexfoliative glaucoma (PXG) from 111 hospitals covering 67 cities from 22 provinces, 4 municipalities, and 5 autonomous regions in mainland China. Clinical data were collected using an Electronic Data Capture System designed by Tongren hospital and Gauss informed Ltd. Blood samples were collected from every patient for further genetic analysis., Results: Medical records of 10,892 patients were collected, of which 5762 patients have complete information. The average age of those with complete information (n=5762) was 62.05±11.26 years old, and 35.25% were males. Primary angle-closure disease, including primary angle-closure suspect/primary angle-closure/primary angle-closure glaucoma/acute primary angle closure, was predominant (4588, 79.63%), and the distribution for others is as follows: POAG (1116, 19.37%), PXG (41, 0.71%) and PG (17, 0.30%). A total of 16,684 blood samples were collected, of which 9917 (82.68%) were primary angle-closure disease, 1987 (16.57%) were POAG, 69 (0.58%) were PXG, 22 (0.18%) were PG, and 4689 were normal controls., Conclusions: The CGSC is the first national-level glaucoma registry study in China. Clinical data and blood samples will provide the opportunity to study the epidemiology of glaucoma in Chinese hospitals, to evaluate the level of medical diagnosis and treatment of glaucoma in China, and to identify the susceptibility loci for glaucoma.

Purpose: To characterise the ocular and extraocular findings in patients with relapsing polychondritis (RP) patients., Design: Retrospective, longitudinal study., Methods: A total number of 16 patients with ocular RP, seen in our tertiary uveitis referral centre over a time period of 10 years were included in this study. Routine ocular examinations such as best-corrected visual acuity, intraocular pressure, slit-lamp biomicroscopy, ophthalmoscopy and auxiliary examinations including ultrasound biomicroscopy, B-scanultrasonography, fundus fluorescein angiography and optical coherence tomography were performed. Ocular and systemic manifestations of these 16 patients were analysed and compared with those presented by others. The patients were treated by corticosteroids or in combination with immunosuppressive agents., Results: Eleven male and five female patients were included with a mean age of 40.4 years. Ocular involvement was bilateral in 75% of the patients and manifested as scleritis (n=10) or uveitis (n=6). Generalised, anterior and posterior uveitis was found in three, two and one patients, respectively. The frequencies of inner ear involvement and arthritis were lower in Chinese patients compared with that observed in Caucasians. Nine patients had a follow-up of 2-44 months, and in these individuals a better visual prognosis was observed in female patients compared with males., Conclusions: Our study shows that uveitis associated with RP may manifest as generalised, anterior or posterior uveitis. The incidence of inner ear involvement and arthritis in these patients was lower than that in Caucasians. Female patients seem to have milder inflammation and a better visual prognosis., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 2019. No commercial re-use. See rights and permissions. Published by BMJ.)

Purpose: It has been hypothesised that uric acid (UA) has a protective effect against oxidative damage in the central nervous system. Therefore, we investigated serum UA concentrations in patients with primary open-angle glaucoma (POAG) and explored the relationship between serum UA concentration and glaucoma severity., Methods: This prospective, cross-sectional, case-control study was conducted in 163 POAG patients and 103 normal controls. Clinical and demographic information was obtained from the medical data platform of the Eye & ENT Hospital of Fudan University, Shanghai, China. The POAG patients were categorised into mild [median deviation (MD) ≤ 6.00 dB], moderate (MD > 6 Db-≥12 dB) and severe (MD > 12 dB) subgroups, based on their visual field MD results., Results: The level of serum UA in the POAG group (0.321 ± 0.084 mmol/l) was approximately 12.77% lower (p < 0.001) than that of the control group (0.362 ± 0.053 mmol/l). The UA/creatinine (Cr) ratio was approximately 14.99% lower (p < 0.001) in patients with POAG (4.47 ± 1.15), compared with the control group (5.14 ± 1.05). The mean level of UA was lowest in the severe POAG group, followed by the moderate POAG group, and the mild POAG group (p < 0.001). A similar trend was observed when UA levels were compared between the POAG and control groups in males. Multivariate regression analyses showed a significant negative correlation between UA and vertical cup-disc ratio (B = -0.320, p = 0.034), and UA and MD (B = -0.441, p = 0.031) in males., Conclusion: Primary open-angle glaucoma patients have lower UA levels; however, a negative association between UA levels and disease severity was evident in male patients., (© 2018 Acta Ophthalmologica Scandinavica Foundation. Published by John Wiley & Sons Ltd.)

Objective: To compare the difference of anterior segment structure between Chinese Han people and American Caucasians, and to explore the confounding factors of anterior chamber angle. Methods: Cross-sectional study. The study was designed to include two healthy groups of Chinese Han people (enrolled from Department of Ophthalmology, Peking University Third Hospital) and American Caucasians (enrolled from Department of Ophthalmology, University of California, San Francisco) from May 2008 to December 2010, each with approximately 120 participants, including 15 persons of each gender in each decade between 40 and 80 years of age. The parameters of the anterior segment were measured by the automatic refractive test, A-ultrasound and ultrasound biomicroscopy. Differences between the two groups were compared with the independent-sample t test or Wilcoxon two-sample test for continuous variable data and the χ(2) test for classified variable data. Multiple linear regression models were performed to analyze the associated factors of anterior chamber angle. Results: There were 118 subjects (118 eyes) and 117 subjects (117 eyes) enrolled in the Chinese and American Caucasians groups, respectively. Compared to Caucasians, Chinese had smaller A-ultrasound measured anterior chamber depth [(3.03±0.34) mm vs . (3.38±0.36) mm, t= -5.791, P< 0.001], smaller relative lens position [0.227 (0.198, 0.256) vs . 0.235 (0.191, 0.262), Z= -3.063, P =0.002], smaller axial length [23.3 (20.9,28.3) mm vs . 24.2 (20.8,28.5) mm, Z= -5.510, P< 0.001], smaller iris root distance [0.111 (0.000, 0.401) mm vs . 0.142 (0.000, 0.451) mm, Z= -3.188, P= 0.001], smaller ciliary body thickness at 1 mm posterior to the scleral spur [0.661 (0.424, 0.892) mm vs . 0.716 (0.467, 0.942) mm, Z= -3.456, P= 0.001], smaller trabecular ciliary process distance [0.780 (0.410, 1.400) mm vs . 0.930 (0.420, 1.470) mm, Z= -3.191, P= 0.001], smaller trabecular ciliary process angle [73.4° (36.3°, 115.3°) vs . 81.1° (47.9°, 147.9°), Z= -3.407, P =0.001], smaller angle opening distance at 500 μm (AOD500) [0.181 (0.000, 0.703) mm vs . 0.264 (0.000, 0.806) mm, Z= -3.444, P= 0.001], smaller angle recess area (ARA) [0.118 (0.011, 0.457) mm(2) vs . 0.179 (0.000, 0.626) mm(2), Z= -3.814, P< 0.001], larger spherical equivalent [0.40 (-5.80, 4.00) D vs . -0.70 (-8.00, 4.00) D, Z= -5.454, P< 0.001], larger lens thickness [(4.62±0.40) mm vs. (4.52±0.40) mm, t= 2.077, P= 0.039] and larger iris thickness [0.430 (0.280, 0.600) mm vs . 0.410 (0.240, 0.580) mm, Z= -2.263, P= 0.024]. On average, with each decade of the increased age, Chinese had a greater decrease in the AOD500 than Caucasians (0.040 mm in Chinese vs . 0.030 mm in Caucasians), while the angle recess area decreased at the same rate (0.020 mm(2) in both groups). After adjusted for age, gender, spherical equivalent, axial length and other parameters of the anterior segment, the trabecular ciliary process angle [for AOD500, standardized regression coefficient (SRC)=0.487, R (2)=0.549, P< 0.001; for ARA, SRC=0.372, R (2)=0.502, P< 0.001] and anterior chamber depth (for AOD500, SRC=0.413, R (2)=0.476, P< 0.001; for ARA, SRC=0.331, R (2)=0.403, P< 0.001) were the main factors of anterior chamber angle parameters for Chinese and Caucasians, respectively. Conclusions: Compared with age and gender matched American Caucasians, Chinese Han people have more crowded anterior chambers and narrower anterior chamber angles. The more anteriorly positioned ciliary processes and shallower anterior chambers are the main factors that contributed to more crowded anterior chambers in Chinese Han people and American Caucasians, respectively. (Chin J Ophthalmol, 2018, 54: 820 - 826) .

Congenital aniridia is a rare genetic disorder characterized by a variable degree of hypoplasia or absence of iris. It is frequently associated with keratopathy, cataract, juvenile‑onset glaucoma and foveal and optic nerve hypoplasia. Mutations in the Paired Box 6 (PAX6) gene on chromosome 11p13 have been demonstrated to cause aniridia. The aim of the present study was to investigate the genetic variations of PAX6 in two sporadic patients from southern China with classic congenital aniridia and cataract. Complete ophthalmic and physical examinations were performed, including best‑corrected visual acuity, intraocular pressure, slit‑lamp examination, fundus examination, optical coherence tomography, ultrasound biomicroscopy, and Pentacam scanning. Genomic DNA was extracted from leukocytes of peripheral blood collected from the two patients, their unaffected parents and 200 unrelated control subjects from the same population. Exons 4‑13 of the PAX6 gene were amplified by polymerase chain reaction and sequenced directly. Patient 1 was affected with aniridia accompanied by congenital cataract and nystagmus. A novel heterozygous PAX6 frameshift mutation c.277delG (p.Glu93SerfsX31) in exon 6 was identified in this patient. Patient 2 was presented with aniridia, congenital cataract, lens subluxation and glaucoma. A recurrent nonsense mutation c.718C>T (p.Arg240X) in exon 9 was identified in this patient. The present results expand the mutation spectrum of PAX6 and will be valuable for genetic counseling in the affected families. Additionally, the identification of these mutations reiterates the importance of PAX6 in ocular development and sheds light on the pathogenesis of congenital aniridia.

Purpose: To characterize the clinical features of scleritis in Chinese patients., Methods: The history, demographics, ocular findings, auxiliary examination findings, complications, systemic diseases and therapeutic effects were analyzed retrospectively., Results: The study included 124 male and 169 female patients with scleritis. Anterior and posterior scleritis were, respectively, found in 243 and 42 patients. The other eight patients had both anterior and posterior involvement. The mean age of scleritis onset was 39.4 years. Systemic diseases associated with scleritis mainly included rheumatoid arthritis (RA) (4.4%), ankylosing spondylitis (AS) (3.4%), and tuberculosis (1.7%). Anterior uveitis (23.7%), complicated cataract (16.7%), and intraocular hypertension (12.6%) were common complications of scleritis. Scleritis was controlled in 94.6% of the patients treated with corticosteroids combined with immunosuppressive agents., Conclusions: Diffuse anterior scleritis was the most common scleritis entity in China. RA and AS were relatively common diseases associated with scleritis. Corticosteroids combined with immunosuppressive agents effectively controlled the disease.

Purpose: To compare the features of postiridotomy ultrasound biomicroscopy (UBM) in Chinese patients with acute primary angle-closure (aPAC) and with chronic primary angle-closure (cPAC) glaucoma., Patients and Methods: Consecutive cases were classified into acute and chronic groups. The acute group included 77 patients with unilateral aPAC. The chronic group included 57 patients with unilateral advanced cPAC glaucoma. In both the groups, the patients' fellow eye underwent a laser iridotomy and was studied. The main outcome measures included qualitative UBM parameters such as a plateau iris, anterior iris insertion, and an anteriorly rotated ciliary process and quantitative UBM parameters such as central anterior chamber depth (ACD), basal iris thickness (IT500), and scleral ciliary process angle (SCPA)., Results: For the qualitative parameters, more eyes in the chronic group had a plateau iris (P=0.046), an anterior iris insertion (P=0.222), and an anteriorly rotated ciliary process (P=0.090) than those in the acute group. For the quantitative parameters, the eyes in the chronic group had a deeper ACD (P<0.001), thicker IT500 (P<0.001), and smaller SCPA (P<0.001) than those in the acute group., Conclusions: The UBM features of Chinese patients with cPAC include a more plateaued iris, a thicker basal iris, and a smaller SCPA, whereas patients with aPAC may have a shallower ACD. For Chinese patients, a nonpupillary block component may play a more important role in asymptomatic cPAC than in aPAC.

Purpose: Homocysteine is a potential risk factor for central retinal vein occlusion (CRVO), but this remains controversial. We measured fasting total plasma homocysteine (tHcy) concentrations immediately after CRVO and in the convalescent period to investigate this controversy., Methods: We measured fasting tHcy concentrations in 36 consecutive patients with CRVO within three days; and at 1, 3, and 6 months after CRVO; and once in 36 control subjects. The vitamin B12 and folate levels, and the presence of C677T MTHFR polymorphisms, were analyzed in all patients and controls., Results: Median tHcy concentrations were not significantly higher than in matched control subjects in the acute phase of CRVO (9.66 [10.75 ± 4.09] vs. 9.25 [9.96 ± 4.02] μmol/L, P = 0.371) and 1 month after CRVO (P = 0.119). However, tHcy levels increased significantly in the convalescent period and were significantly higher than in control subjects at 3 CRVO (P = 0.010) and 6 (P < 0.001) months after CRVO. Furthermore, tHcy levels of the ischemic CRVO patients at 6 months after CRVO were significantly higher than in nonischemic CRVO patients (P = 0.028). However, these observations did not appear to be explained by alteration in serum folate, vitamin B12 concentrations, and the MTHFR C677T genotype., Conclusions: The tHcy levels are not immediately elevated after CRVO, but increase in the convalescent period. These data do not support the hypothesis that raised tHcy concentrations are independent risk factor for CRVO. Instead, it is possible that elevated tHcy levels may be caused by the disease process itself., (Copyright 2014 The Association for Research in Vision and Ophthalmology, Inc.)

Background: To investigate the prevalence, risk factors and characteristics of plateau iris configuration (PIC) among American Caucasian, American Chinese and mainland Chinese., Methods: This multicentre, cross-sectional study of non-glaucomatous subjects (40-80 years) included 111 American Caucasian, 116 American Chinese and 110 mainland Chinese. Prevalence of PIC based on ultrasound biomicroscopy imaging was compared among the different ethnic groups. Risk factors and anterior segment optical coherence tomography-measured iris and angle parameters in eyes with PIC were compared., Results: The prevalence of PIC was 25.2% in American Caucasian, 24.1% in American Chinese and 20.9% in mainland Chinese (p=0.73). The presence of PIC was associated with more positive spherical equivalence (OR=1.31, p=0.002) and shorter axial length (OR=0.75, p=0.04). There were significant differences in angle recess area (ARA) (p=0.04), IT750 (p=0.007) and IT2000 (p<0.001) between Chinese and Caucasians who have PIC., Conclusions: The prevalence of PIC did not differ among American Caucasian, American Chinese and mainland Chinese. PIC was associated with non-myopia and shorter axial length. Chinese eyes with PIC had smaller ARA and thicker irides than Caucasian ones. PIC might be a physiological variation of the iris and ciliary body that exists in normal eyes, both in Chinese and Caucasians.

Purpose: To qualitatively classify and compare types of iris insertion among American Caucasians, American Chinese, and mainland Chinese., Methods: Prospective multicenter cross-sectional study. Sex- and age-matched Caucasian, American Chinese, and mainland Chinese cohorts were enrolled. Ultrasound biomicroscopy (UBM) images of the anterior chamber were acquired. Qualitative classification of iris insertion into basal, middle, and apical categories was performed. Proportions of each type of insertion were compared among racial groups. Multivariate logistic regression was carried out adjusting for potential confounders., Results: data from 117, 129, and 112 subjects were available for american caucasian, american chinese, and mainland chinese subjects, respectively. The most common type of iris insertion in the superior quadrant was basal insertion in both ethnic Chinese and Caucasians. In the inferior, nasal, and temporal quadrants, chinese showed significantly higher proportions of nonbasal insertion (P = 0.048, P 0.0001, P 0.0001, respectively). After adjusting for confounders, nonbasal insertion was significantly associated with Chinese ethnicity in nasal and temporal quadrants (nasal, OR: 3.1, temporal, OR: 4.8). Increasing proportions of nonbasal insertion were found with advancing age in both Chinese and Caucasians., Conclusions: Chinese have significantly higher proportions of nonbasal iris insertion in the nasal and temporal quadrants when compared with Caucasians, even after adjusting for ASOCT-measured anterior segment biometry and iris characteristics. Longitudinal studies in patients who have PAC/PACG are needed to fully elucidate the relationship between iris insertion and angle closure development.

Objective: To describe clinicoradiologic characteristics of orbital sparganosis., Design: Retrospective case series., Participants: We studied 8 patients diagnosed with orbital sparganosis at Zhongshan Ophthalmic Center between 1999 and 2011., Methods: A thorough review of clinical and imaging manifestations., Results: The primary clinical manifestations were redness and edema of the eyelids and conjunctivas (100%); proptosis (mild in 87.5% of cases and severe in 12.5%); subconjunctival yellow-white granulomatous lesions (75.0%); and migratory hyperemic masses of the eyelid or conjunctiva (50.0%). Of the patients, 6 had diffuse orbital or nodular masses on computed tomography imaging, 2 had the "tunnel sign" on magnetic resonance imaging, and 1 had subconjunctival tubular lesions on ultrasound biomicroscopy imaging., Conclusions: Subconjunctival yellow-white granulomatous lesions, migratory hyperemic masses, and the tunnel sign on magnetic resonance imaging are characteristic clues to preoperative diagnosis of orbital sparganosis., (Copyright © 2012 Canadian Ophthalmological Society. Published by Elsevier Inc. All rights reserved.)

Purpose: To explore the clinical characteristics of patients with ocular toxocariasis in eastern China., Methods: The medical records of 35 cases of ocular toxocariasis in Fudan University Eye & ENT Hospital between May 2009 and April 2011 were retrospectively reviewed and analyzed. UBM, RetCam or fundus imaging, and high-frequency or conventional ultrasonography were performed in these patients., Results: The mean patient age in our series of ocular toxocariasis was 11.86 ± 8.80 years. There were 28 children and seven adults, the majority residing in a rural area (88.57%). All cases were classified into three clinical subtypes: granuloma in the peripheral retina (60% of cases); granuloma in the posterior pole (28.57% of cases); and vitreous inflammation mimicking chronic endophthalmitis (5.71% of cases). We also identified an additional subtype with unique clinical features that we termed "combined type" presenting in 5.71% of our patients. This subtype exhibited granulomas in both the posterior pole and peripheral retina. RetCam fundus imaging was able to identify granulomas in the posterior and peripheral subtypes, 100% and 80.95% of cases respectively. Moreover, UBM combined with conventional ultrasonography identified granulomas in 95% of the peripheral subtype cases and in 100% of the posterior pole subtype cases., Conclusions: This is the first ocular toxocariasis series described in Chinese patients. Compared with reports from developed countries, the ocular features in our series were more severe and complicated, presenting with poorer visual acuity and a high rate of retinal detachment (45.7%). The application of RetCam and UBM during examination in ocular toxocariasis can provide valuable information in determining the severity of disease and features important in considering surgical procedures in such patients.

Purpose: To summarize the design and methodology of a multi-center study. With the existed ethnic differences of glaucoma, this survey will explore the differences with regard to anterior and posterior ocular segment parameters between Caucasians and Chinese., Methods: In this study, four cohorts including American Caucasians and American Chinese from San Francisco, southern mainland Chinese from Guangzhou, and northern mainland Chinese from Beijing were prospectively enrolled for a series of eye examinations and tests from May 2008 to December 2010. A total of 120 subjects including 15 of each gender in each age decade from 40s to 70s were recruited for each group. Data of the following tests were collected: a questionnaire eliciting systemic and ocular disease history, blood pressure, presenting and best corrected visual acuity, auto-refraction, Goldmann applanation tonometry, gonioscopy, A-scan, anterior segment optical coherence tomography (ASOCT), ultrasound biomicroscopy (UBM), visual field (VF), Heidelberg retinal tomography (HRT), OCT for optic nerve, and digital fundus photography., Conclusion: this study will provide insights to the etiologies of glaucoma especially PACG through inter-ethnic comparisons of relevant ocular anatomic and functional parameters.

Purpose: To summarize the design and methodology of a large-scale trial in southern China, the Zhongshan Angle Closure Prevention (ZAP) trial. This trial will determine if laser iridotomy (LI) is superior to no treatment for managing Chinese people who are Primary Angle Closure Suspects (PACS). In this trial, PACS was defined as having 6 or more clock hours of angle circumference in which the pigmented trabecular meshwork was not visible under static gonioscopy in both eyes without elevated intraocular pressure, peripheral anterior synechiae or glaucomatous neuropathy., Methods: Subjects were recruited from an urban district in Guangzhou. The target sample size was 870. Persons 50 years of age and older with 20/40 or better vision in both eyes identified as having 6 or more clock hours of angle circumference in which the pigmented trabecular meshwork was not visible under static gonioscopy in both eyes were enrolled. Each subject was randomized to undergo LI in one eye with the fellow eye left untreated. Follow up is planned for a minimum period of 3 years. Baseline examination included tonometry, limbal chamber depth grading, gonioscopy, fundus photography, anterior segment coherence tomography, ultrasound A scan, ultrasound biomicroscopy, specular microscopy and dark room provocative testing. Endpoints for the study include developing elevated intraocular pressure, peripheral anterior synechiae or experiencing acute primary angle closure., Conclusion: The ZAP trial will determine if LI is safe and effective at preventing pathological angle closure in asymptomatic eyes with narrow angle configurations on gonioscopy. It will also provide data on what happens to untreated eyes in PACSs. Data collected at baseline will also help identify those at high risk for developing primary angle closure and primary angle closure glaucoma.

Purpose: To investigate whether subclinical ciliochoroidal effusion and resulting asymptomatic angle narrowing occurs in patients taking topiramate, by ultrasound biomicroscopy (UBM)., Methods: Chinese patients aged 18-75 years for whom topiramate was indicated were recruited. Examinations including UBM were performed before and 4 weeks after commencement of topiramate., Results: In this pilot of 20 eyes of 20 patients, there were no statistically significant changes in the angle parameters noted on gonioscopy or UBM, including anterior chamber depth, angle-opening distance at 500 mum, trabecular ciliary process distance, trabecular-iris angle, and scleral thickness., Conclusion: Short-term use of topiramate does not induce asymptomatic angle narrowing.

Purpose: To characterize the clinical features of Behçet's disease in Chinese patients., Design: Retrospective noncomparative case series., Participants: Seven hundred seventy-five eyes of 437 patients with Behçet's disease initially examined from August, 1995, through June, 2006., Methods: The history, demographic parameters, and clinical findings of all consecutive Behçet's patients referred to the uveitis study center of Sun Yat-sen University were reviewed. Laser flare-cell photometry (LFCM), fundus fluorescein angiography (FFA), optical coherence tomography (OCT), ultrasound biomicroscopy (UBM), and B-scan ultrasonography were performed in certain cases. Most patients were treated by immunosuppressive agents combined with oral corticosteroids., Main Outcome Measures: Patient demographics, clinical presentation, and auxiliary examination findings., Results: Four hundred thirty-seven patients were diagnosed with Behçet's disease. There were 319 male and 118 female patients. Panuveitis was the most common type of uveitis in both genders, although anterior uveitis was seen more frequently in females. Retinal vasculitis, vitreitis, and retinitis were the most common ocular manifestations in these patients. Cataract and macular edema were the most common complications. Oral aphthae were the most frequent extraocular manifestation, followed by dermatologic lesions, and genital ulcers. The results of FFA, OCT, B-scan ultrasonography, LFCM, and UBM generally were in accordance with or comparable with clinical observations. At the final visit, uveitis was well controlled in 86.2% of patients. However, 20.4% of eyes became legally blind despite aggressive treatment. Kaplan-Meier analysis estimated the risk of losing useful vision (0.05) at 5 and 10 years for males and females as 29% versus 6% and 65% versus 33%, respectively., Conclusions: Behçet's disease in Chinese patients mainly manifests as nongranulomatous uveitis frequently associated with oral aphthae and dermatologic lesions. Fundus fluorescein angiography, B-scan ultrasonography, LFCM, UBM, and OCT may provide much information about pathophysiologic hallmarks of Behçet's disease. A combination of corticosteroids with other immunosuppressive agents is effective for most patients with Behçet's disease. Males had a more severe course and were at higher risk for losing vision than females.

Purpose: To assess the short-term effect of laser peripheral iridotomy (LPI) on anterior segment anatomy in angle-closure suspects using ultrasound biomicroscopy (UBM)., Design: Prospective intervention study., Participants: Persons identified as angle-closure suspects aged 50-79 years from a population-based survey in Guangzhou, China., Intervention: Laser peripheral iridotomy was performed on 1 randomly selected eye. Ultrasound biomicroscopy examination was carried out before and 2 weeks after the intervention., Main Outcome Measures: Proportion of eyes with iridotrabecular contact (ITC), as well as changes in UBM parameters including angle opening distance (AOD), iris thickness (IT), iris curvature, iris ciliary process distance, trabecular-ciliary process distance (TCPD), and scleral spur to iris insertion distance (SS-IR)., Results: A total of 72 of 101 eligible subjects participated in the study. The proportion of people with UBM-identified ITC in > or =1 quadrant dropped from 95% (68/72) before to 59% (42/72) after LPI. After LPI, the mean AOD at 250 microns increased from 0.064 mm (standard deviation [SD], 0.052) to 0.085 (0.052) mm (P<0.001); angle recess area increased from 0.040 (0.030) to 0.070 (0.036) mm2 (P<0.0001); TCPD increased from 0.537 to 0.561 mm (P = 0.001); IT at 750 microns increased from 0.440 to 0.459 mm (P = 0.094), and IT at 1000 microns increased from 0.471 to 0.488 mm (P = 0.0001). Eyes whose angles remained closed after LPI (pigmented trabecular meshwork not visible in > or =3 quadrants) tended to have shallower AOD both at 250 (0.071 vs. 0.049 mm; P = 0.09) and 500 microns (0.108 vs. 0.052 mm; P = 0.001), a thicker iris (IT at 750 microns, 0.447 vs. 0.415 mm; P = 0.041), a more anterior positioned ciliary body (TCPD, 0.514 vs. 0.562 mm; P = 0.03), and a statistically nonsignificant more anterior iris insertion (SS-IR: 0.085 vs. 0.125 mm; P = 0.061), before LPI., Conclusions: Laser peripheral iridotomy results in a significant increase in the angle width in Chinese people with narrow angles. However, some iridotrabecular contact was found in 59% of eyes with a patent iridotomy. This was associated with smaller anterior chamber angle dimensions and a thicker iris, both of which may play a causative role in maintaining angle closure after LPI.