Objective: To measure the ciliary sulcus diameters (CSD) in phakic eyes of adult Filipinos using ultrasound biomicroscopy (UBM). Methods: This was an observational, cross-sectional study involving Filipino patients recruited from the Outpatient Department of Makati Medical Center, Philippines from September 2006 to December 2006. Vertical and horizontal CSDs in phakic eyes were measured using a UBM Scan 1000 (Ophthalmic Technologies Inc., Toronto, Ontario, Canada). Three repeated measurements of each meridian were taken and averaged. The average CSD for each eye was computed as the average of the horizontal and vertical CSDs. Student’s t-test was used to analyze data. Results: Seventy-one (71) patients (142 eyes) were included in the study. Mean CSD measurements were as follows: horizontal CSD = 9.76 ± 0.42 mm; vertical CSD = 10.00 ± 0.48 mm; average CSD = 9.88 ± 0.47 mm. There was a significant difference between the means of the vertical and horizontal CSD measurements (P<0.01). There was no significant difference in the mean CSD measurements of the right and left eyes (P= 0.50). Conclusions In this cohort of adult Filipino patients, the UBM-measured vertical CSD is significantly greater than the horizontal CSD. Establishment of CSD measurements of adult Filipino eyes may be helpful in selecting appropriately-sized intraocular lenses for ciliary sulcus implantation.
Microscopy, Acoustic

Laparoscopic cholecystectomy was performed on 394 patients at Trung Vuong Emergency Center from Sep 1998 to Oct 2002. Most of indications were symptomatic stones. The operation was difficult in 90 cases (22.8%), in which 10 cases were converted to laparotomy. Ultrasonographic findings of thickness of gallblader walls, cystic duct stones, clinical manifestations of acute inflammation were warning signs of difficult operation. Outcomes of operations were excellent with decreased complications, shorter hospitalization
Cholecystectomy, Laparoscopic ; Microscopy, Acoustic ; Patients

Ultrasound biomicroscopy is an important ultrasound medical instrument and primary used in ophthalmology.The article design a probe of ultrasound biomicroscopy which is Portable, Low power consumption and High performance. Which can be used when plug in the computer USB interface.
Equipment Design ; Microscopy, Acoustic ; Ophthalmology

Ultrasound biomicroscopy (UBM) has been applied in ophthalmology for twenty years. It plays an important role in diagnosis of eye diseases, especially in glaucoma. After years of research, It has been developed in its structure, sensors, imaging technology and applied research.
Diagnostic Techniques, Ophthalmological ; Microscopy, Acoustic

PURPOSE: To estimate the horizontal and vertical white-to-white diameters (WTW) and anterior chamber depths (ACD) with a dual Scheimpflug camera (GALILEI(TM), Ziemer, Switzerland) and to compare the estimates measured by a measuring caliper and ultrasound biomicroscopy (UBM PlusTM, Paradigm Inc., Utah, USA) in normal subjects. METHODS: Forty-four eyes of 23 subjects were evaluated. Corneal diameter as measured by GALILEI was directly compared with the white-to-white diameter (WTW) measured by a caliper and the correlation with ciliary sulcus diameter (STS) by UBM was evaluated. The anterior chamber depth (ACD) as measured by GALILEI(TM) was compared with the estimates measured by UBM. RESULTS: The horizontal and vertical diameters of WTW by GALILEI were not significantly different from the measurements taken by calipers (p>0.05, p>0.05, respectively), and there were no correlations between the measurements (r=-0.074, p>0.05 at 180degrees r=0.297, p>0.05 at 90degrees, respectively). The estimates by GALILEI did not correlate with those measured with UBM (r=-0.006, p>0.05 at 180degrees r=-0.222, p>0.05 at 90degrees, respectively). However, the mean ACD by GALILEI was deeper than thatby UBM (p<0.01), and the measurements correlated strongly with each other (r=0.760; p<0.01). CONCLUSIONS: The mean WTW measured by GALILEI was not significantly different from the measurements taken by calipers and the measurements did not correlate with each other. There was also no correlation with the measurementsby GALILEI and UBM. ACD by GALILEI was measured to be deeper those that by UBM.
Anterior Chamber ; Eye ; Microscopy, Acoustic ; Utah

PURPOSE: To evaluate intraobserver reproducibility of measurements in images obtained by the ultrasound biomicroscopy (UBM plus, model P45, Paradigm(R), Inc., Utah, USA) and estimate the agreement of measurements by ultrasound biomicroscopy and A-scan ultrasound (model P37, Paradigm(R), Inc., Utah, USA). METHODS: The anterior segment images of fifteen normal patients were obtained twice by single examiner. Six different parameters were measured in each image. Among the parameters, anterior chamber depth was compared with that measured by A-scan ultrasound. RESULTS: The intraobserver reproducibility was high for all six parameters that includes central corneal thickness (coefficient of variation (%) 2.80), anterior chamber depth (coefficient of variation (%) 1.20), anterior chamber angle (coefficient of variation (%) 4.01), scleral thickness (coefficient of variation (%) 4.28), trabecular meshwork-iris distance (coefficient of variation (%) 6.09) and angle opening distance (AOD500, coefficient of variation (%) 6.09). The correlation between ultrasound biomicroscopy and A-scan ultrasound in measuring the anterior chamber depth was statistically significant (correlation coefficient = 0.79, p=0.002). CONCLUSIONS: The measurements of anterior segment parameters by ultrasound biomicroscopy have high reproducibility and will be useful in evaluating the anterior segment structure.
Anterior Chamber ; Humans ; Microscopy, Acoustic* ; Ultrasonography* ; Utah

PURPOSE: To evaluate the clinical significance of angle-opening distance 500 (AOD500) using ultrasound biomicroscopy (UBM) in the early stage of traumatic hyphema. METHODS: The participants of this study were 46 hospitalized traumatic hyphema patients. We measured the quantity of initial blood clotting using a slit-lamp and the range of angle recession, AOD500 using UBM and then reviewed the relationship between the two. RESULTS: The difference of AOD500 in the traumatic and the non-traumatic eye measured by UBM at admission increased significantly in the wider recessed angle group (p=0.008), but did not increase at a statistically significantly level in the larger initial blood clot grade group (> or =Grade 2). CONCLUSIONS: These results suggest that the measurement of the angle-opening distance of both eyes using UBM will aid in evaluating the range of angle recession in patients in the early stage of traumatic hyphema.
Blood Coagulation ; Eye ; Humans ; Hyphema ; Microscopy, Acoustic

PURPOSE: To introduce a new convenient and accurate method to measure the angle kappa using ultrasound biomicroscopy (UBM) and corneal topography. METHODS: Data from 42 eyes (13 males and 29 females) were analyzed in this study. The angle kappa was measured using Orbscan II and calculated with UBM and corneal topography. The angle kappa of the dominant eye was compared with measurements by Orbscan II. RESULTS: The mean patient age was 36.4 ± 13.8 years. The average angle kappa measured by Orbscan II was 3.98°± 1.12°, while the average angle kappa calculated with UBM and corneal topography was 3.19°± 1.15°. The difference in angle kappa measured by the two methods was statistically significant (p < 0.001). The two methods showed good reliability (intraclass correlation coefficient, 0.671; p < 0.001). Bland-Altman plots were used to demonstrate the agreement between the two methods. CONCLUSIONS: We designed a new method using UBM and corneal topography to calculate the angle kappa. This method is convenient to use and allows for measurement of the angle kappa without an expensive device.
Corneal Topography* ; Humans ; Male ; Methods ; Microscopy, Acoustic* ; Ultrasonography*

PURPOSE: To evaluate the extent of lesion by using ultrasound biomicroscopy in eyelid tumor. METHODS: We retrospectively analyzed 17 patients with eyelid tumor, who had undergone preoperative ultrasound biomicroscopy to access the extent of the lesion and the depth of involvement, excision and biopsy. These data were compared to the histopathologic findings. RESULTS: On ultrasound biomicroscopic examination, the eyelid tumor showed greater homogeneous hypoechoic density or heterogenous echo density than that of the surrounding tissue, leading to identifying the lateral margin of the lesion and depth of involvement. The mean maximum thickness of the lesion measured by ultrasound biomicroscopy was 2.26 +/- 0.49 mm and that of the histopathologic depth was 2.22 +/- 0.56 mm. Linear regression demonstrated that lesion depth measured by ultrasound biomicroscopy was correlated with histopathologic depth. CONCLUSIONS: In eyelid tumor, ultrasound biomicroscopy is helpful in assessing the extent of the lesion and the depth of involvement preoperatively, and in obtaining good postoperative results.
Biopsy ; Eyelids* ; Humans ; Linear Models ; Microscopy, Acoustic* ; Retrospective Studies ; Ultrasonography*

PURPOSE: To observe the effects of biodegradable collagen matrix (OculusGen(TM)) on filtering bleb formation and maintenance and to investigate its clinical effects and usefulness in trabeculectomy. METHODS: Ophthalmologic examinations were preformed 1 day, 2 weeks, 1 month, 2 months, 3 months, 6 months, and 12 months postoperatively in the case and control groups. The clinical findings of the filtering bleb were observed, and the clinical effects measured by mean intraocular pressure and complications were evaluated in both groups. RESULTS: The success rates were 76% in the case group and 88% in the control group, and there were no significant differences between the case and control groups. In the case group, postoperative conjunctival injection persisted for more than 1 month with increasing severity, while ultrasound biomicroscopy revealed increased echogenicity of the subconjuctival and tenon tissue with no definite space-occupying effect. CONCLUSIONS: Trabeculectomy utilizing collagen matrix showed similar clinical results compared to the current traditional trabeculectomy; slit-lamp and ultrasound biomicroscopy findings did not reveal any advantageous changes to filtering bleb function.
Blister ; Collagen ; Glaucoma ; Intraocular Pressure ; Microscopy, Acoustic ; Trabeculectomy