Comparison Between Different Investigations Used in Intraocular Lens Calculation in High Myopic Cataractous Patients
NCT ID: NCT04952181
Last Updated: 2021-07-07
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
Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.
UNKNOWN
NA
40 participants
INTERVENTIONAL
2021-07-31
2022-02-28
Brief Summary
Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.
Related Clinical Trials
Explore similar clinical trials based on study characteristics and research focus.
Study of Subluxation Lens Biometrics and Postoperative Intraocular Lens Stability
NCT04685122
Comparing Monofocal IOLs in Highly Myopic Cataract Patients
NCT06905938
Comparison of Intraocular Lens Power Calculation Methods After Corneal Laser Refractive Surgery in Axial and Refractive Ammertropia
NCT01979172
Postoperative Total Wavefront Pattern Between Two Types of Intraocular Lenses Implanted in Cataract Surgery
NCT04701255
Evaluation of Visual Acuity in Myopic Cataract Patients Using Trifocal Intraocular Lens
NCT04927117
Detailed Description
Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.
* This study will be conducted on high myopic cataractous patients scheduled for phacoemulsification and IOL implantation in department of ophthalmology, Sohag university
* patients will be divided into 2 groups one will be subjected to intraocular lens (IOL) calculation by optical biometry the second one will be subjected to intraocular lens (IOL) calculation by ultrasonic biometry
* postoperative auto refraction after I month
Conditions
See the medical conditions and disease areas that this research is targeting or investigating.
Study Design
Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.
NON_RANDOMIZED
PARALLEL
OTHER
NONE
Study Groups
Review each arm or cohort in the study, along with the interventions and objectives associated with them.
optical biometry
optical biometry
optical biometry is a fast, noncontact method it uses the method of partial coherence interferometry (PCI) to measure the axial length (AXL), based on reflection of the interference signal of the retinal pigment epithelium.
ultrasonic biometry
ultrasonic biometry
ultrasonic biometry is contact method depends on ultrasonic transducer producing thin sound beam travelling through different media of the eye when it faces interface of substance dissimilar from that it is travelling through part is reflecting and the other travel through the different substance
Interventions
Learn about the drugs, procedures, or behavioral strategies being tested and how they are applied within this trial.
optical biometry
optical biometry is a fast, noncontact method it uses the method of partial coherence interferometry (PCI) to measure the axial length (AXL), based on reflection of the interference signal of the retinal pigment epithelium.
ultrasonic biometry
ultrasonic biometry is contact method depends on ultrasonic transducer producing thin sound beam travelling through different media of the eye when it faces interface of substance dissimilar from that it is travelling through part is reflecting and the other travel through the different substance
Eligibility Criteria
Check the participation requirements, including inclusion and exclusion rules, age limits, and whether healthy volunteers are accepted.
Inclusion Criteria
Exclusion Criteria
2. Associated pathologies such as optic neuropathy, age related macular degeneration, macular edema, retinal detachment, , ocular inflammation, retinitis pigmentosa, proliferative diabetic retinopathy
3. corneal opacities or irregularities, scars, dystrophy or ectasia
4. Patients who underwent previous corneal surgery (including refractive surgery)
5. Patients having intraoperative complications as inability to achieve secure 'in the bag' placement of the IOL (i.e. due to posterior capsule rupture, vitreous loss, weak zonules, or zonular rupture)
30 Years
ALL
Yes
Sponsors
Meet the organizations funding or collaborating on the study and learn about their roles.
Sohag University
OTHER
Responsible Party
Identify the individual or organization who holds primary responsibility for the study information submitted to regulators.
Esraa Ahmed Okasha
principle investigator
Central Contacts
Reach out to these primary contacts for questions about participation or study logistics.
Usama A Mohamed, Professor
Role: CONTACT
References
Explore related publications, articles, or registry entries linked to this study.
Tappeiner C, Rohrer K, Frueh BE, Waelti R, Goldblum D. Clinical comparison of biometry using the non-contact optical low coherence reflectometer (Lenstar LS 900) and contact ultrasound biometer (Tomey AL-3000) in cataract eyes. Br J Ophthalmol. 2010 May;94(5):666-7. doi: 10.1136/bjo.2009.167700. No abstract available.
Wang L, Shirayama M, Ma XJ, Kohnen T, Koch DD. Optimizing intraocular lens power calculations in eyes with axial lengths above 25.0 mm. J Cataract Refract Surg. 2011 Nov;37(11):2018-27. doi: 10.1016/j.jcrs.2011.05.042.
Olsen T. Improved accuracy of intraocular lens power calculation with the Zeiss IOLMaster. Acta Ophthalmol Scand. 2007 Feb;85(1):84-7. doi: 10.1111/j.1600-0420.2006.00774.x.
Other Identifiers
Review additional registry numbers or institutional identifiers associated with this trial.
Soh-Med-21-06-01
Identifier Type: -
Identifier Source: org_study_id
More Related Trials
Additional clinical trials that may be relevant based on similarity analysis.