Comparison of the Accuracy of Different Intraocular Lens Power Calculation Formulas in Cataract Patients With Prior Radial Keratotomy
NCT06354296 · Status: NOT_YET_RECRUITING · Type: OBSERVATIONAL · Enrollment: 50
Last updated 2024-04-09
Summary
The Web-based Barret True K formula with no history formula has been proven to be a good choice for cataract patients after RK in several studies. The American society of cataract and refractive surgeons provides several IOL formulas for cataract patients who have undergone previous corneal refractive surgery. In cases where only IOL-Master data are available, Holladay 1 (Double-K) \[Holladay 1 (D-K)\] can be used for IOL power calculation in cataract patients with a history of RK. The traditional Haigis formula has also been shown to be effective for cataract patients after RK. To compare the accuracy of four intraocular lens (IOL) power calculation formulas in cataract patients after RK. They are Barrett True-K formula, Holladay 1(D-K) formula, Haigis formula, and MM formula.
Conditions
- Cataract
Sponsors & Collaborators
-
He Eye Hospital
lead OTHER
Eligibility
- Min Age
- 18 Years
- Max Age
- 80 Years
- Sex
- ALL
- Healthy Volunteers
- No
Timeline & Regulatory
- Start
- 2024-04-15
- Primary Completion
- 2024-08-15
- Completion
- 2024-08-31
More Related Trials
-
Intraocular Lens Power Calculation for Combined Phaco-vitrectomy Procedures
NCT03856346 ·Status: UNKNOWN
-
Comparison of IOL Formulas in Eyes With PCE≥15µm
NCT07346456 ·Status: COMPLETED
-
Comparison of Intraocular Lens Power Calculation Methods After Corneal Laser Refractive Surgery in Axial and Refractive Ammertropia
NCT01979172 ·Status: UNKNOWN
-
IOL Power Calculation Using Dual Schiempflug Analyzer
NCT02362334 ·Status: UNKNOWN
-
Accuracy of Holladay 2 Formula in the Absence of Lens Thickness
NCT01846078 ·Status: COMPLETED ·Phase: NA
-
Limbal Relaxing Incision Versus Toric Intraocular Lens for Corneal Astigmatism During Cataract Surgery.
NCT02067429 ·Status: UNKNOWN ·Phase: NA
-
Evaluation Of Deep Anterior Lamellar Keratoplasty By Anterior Segment Ocular Coherence Tomography
NCT05345652 ·Status: UNKNOWN
-
Comparative Study of Three IOL Power Calculation Formulae for Asian Eyes Shorter Than 22mm or Longer Than 25mm
NCT00347516 ·Status: COMPLETED ·Phase: NA
-
Spherical Aberration and Contrast Sensitivity in IOLs
NCT00576485 ·Status: COMPLETED ·Phase: PHASE4
-
Correlation Between Preoperative Refraction and Anterior Segment Parameters With ICL Vault
NCT05670626 ·Status: ENROLLING_BY_INVITATION ·Phase: NA
-
Wavefront Analysis and Contrast Sensitivity After Cataract Surgery With Akreos Advanced Optics Intraocular Lens Implantation
NCT00863759 ·Status: COMPLETED ·Phase: NA
-
Multi-formula Optimization of Second Eye Refinement According to Direction of the Prediction Error of the First Eye
NCT02270879 ·Status: COMPLETED
-
A Trial of Toric Versus Non-toric Intraocular Lenses in Phacoemulsification Cataract Surgery
NCT01712503 ·Status: UNKNOWN ·Phase: NA
-
Comparison of Postoperative Visual Acuity and Spectacle Independence Between the Tecnis Multifocal Intraoculer Lens (IOL) and the Crystalens Accommodating IOL
NCT01275118 ·Status: COMPLETED ·Phase: PHASE4
-
Clinical Evaluation of a New Aspheric Intraocular Lens.
NCT00786565 ·Status: COMPLETED ·Phase: PHASE4
-
Outcomes in a Comparison of Manual Penetrating Keratoplasty and the IntraLase® Enabled Keratoplasty
NCT00566605 ·Status: UNKNOWN ·Phase: PHASE1
-
Outcomes of a Trifocal IOL in Post-refractive Patients
NCT04545073 ·Status: UNKNOWN
-
Intra and Postoperative Outcomes With 3 Injectors
NCT02466256 ·Status: COMPLETED ·Phase: NA
-
Visual Acuity Outcome Differences Between the Alcon Vivity Toric IOL and RxSight LAL+
NCT06574646 ·Status: NOT_YET_RECRUITING ·Phase: NA
-
Study on the Application of Intraoperative Optical Coherence Tomography Technique in the Diagnosis and Treatment of Lens Diseases
NCT06687356 ·Status: RECRUITING ·Phase: NA
-
Multifocal-toric IOL Compared to Multifocal IOL Combined With Limbal Relaxing Incisions for Correction of Moderate Astigmatism During Cataract Surgery
NCT06277349 ·Status: COMPLETED ·Phase: NA
-
Comperative Trial Between an Accommodative Iol and Monofocal Iol
NCT00604305 ·Status: WITHDRAWN ·Phase: NA
-
Influence of Two Different Preloaded Intraocular Lens (IOLs) on Posterior Capsule Opacification
NCT00673803 ·Status: COMPLETED ·Phase: PHASE4
-
Surgical Outcomes After Routine Cataract Extraction & Implantation of a Conventional or Spheric Intraocular Lens
NCT00366496 ·Status: COMPLETED ·Phase: NA
-
Intra-operative Measurements to Predict the Position of the Intraocular Lens Post-operatively
NCT01867541 ·Status: COMPLETED