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| Sponsored by: |
Far Eastern Memorial Hospital |
|---|---|
| Information provided by: | Far Eastern Memorial Hospital |
| ClinicalTrials.gov Identifier: | NCT00712231 |
Purpose
There have been numerous studies comparing various ACD measurements in phakic eyes,while researches comparing ACD in pseudophakic eyes are less extensive. With the recent popularity of presbyopia correction, measuring the ACD will facilitate differentiating pseudophakic accommodation from pseudoaccommodation. It is thus mandatory to verify the accuracy of ACD measurement of these devices since the innovation of various IOLs in the recent decade makes this task more complicated. In this study, we will assess the limitations of using Pentacam for ACD measurement in pseudophakic eyes and compare Pentacam measurement with IOLMaster and A-scan measurements.
| Condition |
|---|
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Cataract |
| Study Type: | Observational |
| Study Design: | Cohort, Prospective |
| Official Title: | To Assess the Degree of Agreement of Anterior Chamber Depth Measurements by 2 Optical Devices (Pentacam and IOLMaster) and Compare Them With Contact Ultrasound A-Scan in Phakic and Pseudophakic Eyes. |
no specimen
| Enrollment: | 184 |
| Study Start Date: | January 2008 |
| Study Completion Date: | February 2008 |
| Primary Completion Date: | February 2008 (Final data collection date for primary outcome measure) |
| Groups/Cohorts |
|---|
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phakic eyes
the cases did not accept any intraocular surgery
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pseudophakic eyes
tht cases did not accept any intraocular surgery expect for cataract surgery
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In this prospective study, ACD was measured in 90 phakic and 94 pseudophakic eyes by Pentacam, IOLMaster and A-scan. Correlations and differences between the three measurements were investigated. The accuracy in detecting the anterior lens surface in pseudophakic eyes was also assessed.Differences in ACD-Pen, ACD-IOLM, and ACD-A were analyzed using one-way analysis of variance (ANOVA). When an overall significance of P< 0.05 was obtained, pair-wise comparisons were made using Tukey's multiple comparison t tests. The association between ACD-Pen, ACD-IOLM, and ACD-A was assessed using Pearson's correlation test. The distribution of erroneous ACD-Pen measurement for the three IOLs was analyzed with the chi-square test. In all analyses, P <0.05 was considered statistically significant.
Eligibility| Ages Eligible for Study: | 40 Years to 80 Years |
| Genders Eligible for Study: | Both |
| Accepts Healthy Volunteers: | No |
| Sampling Method: | Probability Sample |
Ninety phakic eyes were randomly selected for study from the outpatient clinic. Ninety-four pseudophakic eyes that had a standard clear cornea phacoemulsification with one of three acrylic IOLs (MA60BM, SA60AT, SN60AT) implanted into the capsular bag by the same surgeon were also studied.
Inclusion Criteria:
Exclusion Criteria:
History of ocular disease, such as
Contacts and Locations More Information
| Responsible Party: | Far Eastern Memorial Hospital ( Shu-Wen Chang/Far Eastern Memorial Hospital ) |
| Study ID Numbers: | FEMH97007 |
| Study First Received: | July 7, 2008 |
| Last Updated: | July 8, 2008 |
| ClinicalTrials.gov Identifier: | NCT00712231 |
| Health Authority: | Taiwan: Institutional Review Board |
|
pseudophakic anterior chamber depth Pentacam |
|
Eye Diseases Cataract Lens Diseases |
