Predictors of angle widening after laser iridotomy in Chinese patients with primary angle-closure suspect using ultrasound biomicroscopy.

Aim: To assess the predictive value of baseline parameters of ultrasound biomicroscopy (UBM) for angle widening after prophylactic laser peripheral iridotomy (LPI) in patients with primary angle-closure suspect (PACS).

Methods: Angle-opening distance (AOD), trabecular iris angle (TIA), iris thickness, trabecular-ciliary process angle, and trabecular-ciliary process distance were measured using UBM performed before and two weeks after LPI. Iris convexity (IC), iris insertion, angulation, and ciliary body (CB) size and position were graded.

Design, methodology, and preliminary results of the follow-up of a population-based cohort study in rural area of northern China: Handan Eye Study.

Background: Handan Eye Study (HES), a large population-based cohort study in rural area of northern China, was one of the few studies focusing on the major eye diseases of rural Chinese population. The aim of this study was to introduce the design, methodology and to assess the data quality of the follow-up phase of HES.

Methods: All participants were recruited in Yongnian county of Handan city between 2012 and 2013.

Five-year incidence and progression of myopic maculopathy in a rural Chinese adult population: the Handan Eye Study.

Purpose: To determine the cumulative five-year incidence and progression of myopic maculopathy in a rural Chinese adult population.

Methods: The Handan Eye Study was a population-based longitudinal study. In 2006, 6830 subjects aged 30+ years participated in this study (baseline).

[Influence of artificial insemination with donor sperm on the pregnancy outcomes and safety of the offspring].

Objective: To investigate the factors influencing the pregnancy outcomes of artificial insemination with donor sperm (AID), improve the pregnancy rate, and evaluate the safety of the offspring.

Methods: We retrospectively analyzed 7,761 cycles of AID for 5,109 infertile couples performed between July 1, 2005 and June 30, 2013 in the Center of Reproductive Medicine of Shenyang No 204 Hospital, the outcomes of pregnancy, and the incidence of birth defects.

Results: Totally, 2 252 clinical pregnancies were achieved by AID, in which the pregnancy rate per cycle was 29.

Dynamic changes in anterior segment morphology during the Valsalva maneuver assessed with ultrasound Biomicroscopy.

Purpose: We evaluated dynamic changes in anterior segment morphology during the Valsalva maneuver with ultrasound biomicroscopy (UBM).

Methods: For this prospective observational study, a group of patients with narrow angles and a group of normal subjects were recruited. The anterior segment of subjects was imaged and analyzed quantitatively using UBM before and during the Valsalva maneuver.

Pupil constriction can alter the accuracy of dark room provocative test.

Background: Primary angle-closure glaucoma (PACG) is a major cause of visual morbidity in East Asia. Dark-room provocative test (DRPT) has been used to determine which narrow angles have the risk to develop angle closure. However, the accuracy of DRPT might be altered because that after emerging from the dark room, the configuration of the angle is affected by the light of the slit-lamp and the appositionally closed angle reopens.

[Applications of anterior segment optical coherence tomography in ophthalmology].

The background, technical characteristics and operation procedures of anterior segment optical coherence tomography (OCT) are introduced. The ophthalmic applications of this technique are summarized. The initial studies showed that anterior segment OCT can be a promising tool for the observation of image and analysis of the cornea, the imaging and biological measuring of the anterior chamber, the observation of image and quantitative evaluation of the anterior chamber angle, the observation of image and assessment of phakic intraocular lenses, the observation of image and evaluation of trabeculectomy blebs as well as the observation of ocular accommodation.