Ultrasound Biomicroscopic Assessment of Intraocular Lens Tilt and Decenteration After Phacoemulsification
Trial statusRecruiting
Trial phaseNot listed
Trial typeObservational
Biological sexAll
AgeUp to 45
SponsorSohag University
About this trial
This study aims to assess intraocular lens (IOL) tilt and decenteration by means of ultrasound biomicroscopy after phacoemulsification.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Both sexes.
Patients with senile cataract prepared for phacoemulsification and IOL implantation.
Disqualifiers
Age <45 years.
Complicated ataract.
Coexisting ocular disorders (Glaucoma, Pseudoexfoliation Syndrome, Sublaxation, Chronic Iridocyclitis).
Previous ocular surgery.
Trial population
A prospective, observational, hospital-based study which will be conducted in the Department of Ophthalmology, Sohag University Hospital, Egypt.
Trial design
Design model
Cohort
Time perspective
Prospective
Treatments tested in this trial
Ultrasound biomicroscopy
DeviceScanning is conducted with the non-dilated eye in a central position and the patient in the supine position. A drop of a topical anesthetic agent (benoxinate hydrochloride) is applied to both eyes.
Treatment groups
100 Participants
are divided into 2 treatment groupsGroup A: Group 11 intervention
Group B: Group 21 intervention
Trial outcomes
Primary outcomes
1
Measurement of intraocular lens tilt
Measurement of intraocular lens (IOL) tilt. The intraocular lens (IOL) position was measured as the Anterior Chamber Depth (ACD), defined as the distance between the anterior border of the hyperreflective line marking the central posterior corneal surface and the anterior IOL optic surface at the centre of the pupillary space.
Time frame
Six months after surgerySecondary outcomes
1
Measurement of intraocular lens decenteration
Anterior Chamber Depth (ACD) was determined from the central inner corneal surface, perpendicular to the corneal surface to the most anteriorly visible part of the intraocular lens (IOL). A line (line AB) was drawn between the two scleral spurs (SSs), as the base line of reference for IOL position. Two perpendicular lines were drawn from both optical endpoints of the IOL (C and D) to the base line with intersection points (E and F). IOL decentration was equal to half of the differences between distance AE and FB, i.e. IOL decentration = (\|AE-FB\|) / 2.
Time frame
Six months after surgerySponsors and contacts
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Source ClinicalTrials.gov