Clinical trials: Intraocular Lens Calculation
the Accuracy of Intraocular Lens Calculation Formula
Study on the Accuracy of Intraocular Lens Calculation Formula
In this study, we will retrospectively collect patients who have performed phacoemulsification combined with intraocular lens implantation in our hospital, collect various preoperative biometric data and postoperative refractive…
- Trial name
- NCT05672693
- Testing
- Several Calculation Formulas of Intraocular Lens
- Where
- China
- Volunteers
- 500 people, healthy volunteers welcome
- Sponsor
- Second Affiliated Hospital, Zhejiang University, School of Medicine
Pseudophakia, Refractive Error
IOL Power Formula Prediction Accuracy at the Extremes of Axial Length: A Prospective Outcome Verification Study
This single-center, prospective, cross-sectional study evaluates how accurately eight modern intraocular lens (IOL) power calculation formulas predicted the postoperative refractive result in eyes with extreme axial length after…
- Trial name
- FORMULEX-OV (NCT07724795)
- Testing
- Standardized postoperative outcome visit
- Where
- Austria
- Volunteers
- 200 people
- Sponsor
- Vienna Hospital Association
Healthy
Comparability of Keratometry of VERION Image Guided System With Established Measuring Devices
The purpose of this study is to determine if the keratometric functions of the VERION Image Guided System are comparable to those of established keratometric devices (IOLMaster 500, Pentacam HR, LenStar LS900).
- Trial name
- NCT02377154
- Testing
- Slit lamp, Autorefractor, IOLMaster 500
- Where
- Germany
- Volunteers
- 150 people, healthy volunteers welcome
- Sponsor
- Heidelberg University
Dry Eye Disease (DED), Cataract (Post-operative Cataract Surgery Follow-up)
Effect of Dry Eye Disease on Accuracy of Intraocular Lens Power Calculation Before Phacoemulsification
This study aims to determine the effect of dry eye disease on intraocular lens power calculation and the postoperative refractive outcome.
- Trial name
- NCT07525336
- Testing
- dry eye disease optimization
- Volunteers
- 100 people
- Sponsor
- Assiut University
Cataract
1000 Eyes Lens Biometry Study: Artificial Intelligence for Intraocular Lens Power Calculation
The main purpose of the study is to develop an AI approach to improve intraocular lens power calculations.
- Trial name
- NCT05779319
- Testing
- non contact measurement with the IOL Master 700
- Where
- Austria
- Volunteers
- 1,000 people
- Sponsor
- Johannes Kepler University of Linz
Cataract
Comparative Study of Three IOL Power Calculation Formulae for Asian Eyes Shorter Than 22mm or Longer Than 25mm
Implantation of an intraocular lens is the gold standard in modern day cataract surgery. The appropriate lens power needed to achieve the desired refractive outcome can be calculated with a whole variety of formulas.
- Trial name
- NCT00347516
- Testing
- IOL calculation formula
- Where
- Singapore
- Volunteers
- 210 people, healthy volunteers welcome
- Sponsor
- Singapore National Eye Centre
Cataract
IOL Power Calculation Using Dual Schiempflug Analyzer
This study evaluates the various ocular parameters which are necessary for ocular biometry and the calculated IOL powers using both dual Schiempflug analyzer and optical low-coherence refelctometry.
- Trial name
- NCT02362334
- Where
- South Korea
- Volunteers
- 140 people
- Sponsor
- Chuncheon Sacred Heart Hospital
Pterygium, Cataract
Effect of Pterygium Excision on Intraocular Lens Power Calculation for Subsequent Cataract Operation
Pterygium is known to induce with-the-rule astigmatism. Excision of pterygium will steepen the cornea and reduce corneal astigmatism.
- Conditions
- Pterygium, Cataract, Astigmatism
- Trial name
- NCT00563667
- Testing
- pterygium excision
- Where
- 3 sites in China
- Volunteers
- 40 people
- Sponsor
- Hospital Authority, Hong Kong
Cataracts
Intra-operative Measurements to Predict the Position of the Intraocular Lens Post-operatively
Refractive outcome after cataract surgery mainly depends on the prediction of the intraocular lens that is implanted in the eye during surgery.
- Trial name
- NCT01867541
- Volunteers
- 70 people
- Sponsor
- Prim. Prof. Dr. Oliver Findl, MBA