Optical Biometry and Spherical Aberration in Ametropic and Emmetropic Eyes
NCT ID: NCT01663597
Last Updated: 2013-08-29
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
160 participants
OBSERVATIONAL
2012-08-31
2013-05-31
Brief Summary
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Background Cataract surgery has become a routine procedure in the developed countries. During this surgery, a foldable intraocular lens is usually inserted into the capsular bag. However, these lenses do not account for individual optical biometry data or aberrations. Therefore, it is important to provide data for ametropic and emmetropic eyes as this information might improve future intraocular lens design and lead to individually adapted lenses for yielding optimal visual acuity and quality results.
The aim of the present study is to clarify the correlation between refractive errors/axial eye length and spherical aberrations of the cornea.
Detailed Description
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Conditions
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Study Design
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COHORT
PROSPECTIVE
Study Groups
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Cohort 1
40 subjects with high grarde myopia ranging from -10 diopters to -4.01 diopters
No interventions assigned to this group
Cohort 2
40 subjects with moderate myopia ranging from -4 diopters to -1.01 diopter
No interventions assigned to this group
Cohort 3
40 subjects with emmetropia, -1 diopter to +1 diopter
No interventions assigned to this group
Cohort 4
40 subjects with hyperopia, +1.01 diopter and more
No interventions assigned to this group
Eligibility Criteria
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Inclusion Criteria
* normal findings in the medical history unless the investigator considers an abnormality to be clinically irrelevant
* normal ophthalmic findings unless the investigator considers an abnormality to be clinically irrelevant
Exclusion Criteria
* Dry eye syndrome
* high astigmatism (\>1 diopter)
* history of refractive surgery
* abuse of alcoholic beverages
* participation in a clinical trial in the 3 weeks preceding the study
* symptoms of a clinically relevant illness in the 3 weeks before the study day
* pregnancy
40 Years
60 Years
ALL
Yes
Sponsors
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Medical University of Vienna
OTHER
Responsible Party
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Gerhard Garhofer
Assoc. Prof. Priv. Doz. Dr.
Locations
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Department of Clinical Pharmacology, Medical University of Vienna
Vienna, Vienna, Austria
Countries
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Other Identifiers
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OPHTH-240512
Identifier Type: -
Identifier Source: org_study_id