Cataract Senile Clinical Trial
Official title:
Comparative Evaluation of Long-term Axial Stability of Two Different Models of Intraocular Lenses in Patients With an Eye Length More Than 26 mm
Verified date | April 2024 |
Source | The S.N. Fyodorov Eye Microsurgery State Institution |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Interventional |
Some parameters, such as a change in the optic tilt and axial decentration, can affect the optical characteristics of intraocular lenses (IOLs) in postoperative period, which leads to residual refractive errors and other complications. The stability of the intraocular lens in the eye is largely dependent on the mechanical design of its haptic support elements. Thus, the new Clareon IOL has a flat haptic with a flexible design that minimizes axial changes and allows the IOL to maintain a stable position in a given plane during compression. Currently there is no published data of the stability for Clareon AutonoMe IOL for long eyes. The purpose of the current study is to evaluate and compare the axis displacement and stability of optical tilt, visual and refractive results in patients after implantation of two different models of intraocular lenses: Clareon AutonoMe (Alcon, USA) and Hoya iSert 251 (Japan) in the long-term postoperative period (after cataract surgery).
Status | Completed |
Enrollment | 78 |
Est. completion date | April 20, 2024 |
Est. primary completion date | December 31, 2022 |
Accepts healthy volunteers | No |
Gender | All |
Age group | 50 Years to 78 Years |
Eligibility | Inclusion Criteria: - Man or woman 50 years and older with indicated cataract surgery. - Signed informed consent, given by the participant or his/her legal representative. - Ability to understand Russian spoken and written language. - Sanitated oral cavity. - Intraocular pressure in normal range. - Axial eye length> 26 mm. - Corneal astigmatism <1.0 diopters. - The presence of age-related cataract with high myopia and low visual acuity (less than 0.5 with correction), the cornea thickness in the central optical zone is not less than 500 microns and not more than 600 microns, and the density of endothelial cells is higher than 2300 cells / mm2. - Patients who have passed the entire tests for hospitalization in hospital and also have received the admission (the conclusion) of the therapist for the surgery. Exclusion Criteria: - Inability to give signed informed consent. - Age under 50 years. - History of allergic reactions to antibiotics, glucocorticosteroids, medications for local and general anesthesia. - Diagnosed neoplastic process or treatment for tumor disease. - Positive tests for infectious: HIV, syphilis, Hepatitis B, Hepatitis C. - Any medical, psychiatric and/or condition, including cachexia, or social conditions that the investigator believes would interfere with or contraindicate adherence to the research protocol or the ability to provide signed informed consent. - Active ophthalmic infection. - Uncontrolled glaucoma - Retinal defunctioning (no light perception and/or retinal detachment). - Absence of the electric activity of the optic nerve and/or retina. - Concomitant ocular pathology, such as the subluxation of the lens, glaucoma, pathology of the central retina, diabetic retinopathy, scars and opacities of the cornea, keratoconus, pathology of the corneal endothelium (Fuchs corneal dystrophy), pseudoexfoliative syndrome with pronounced impairment of the diaphragmatic function of the pupil, a non-functioning retina (lack of light perception and/or its detachment according to ultrasound examination), lack of electrical activity of the optic nerve and retina according to electrophysiological examination, etc. - Patients with a serious general medical condition. - Systemic use / administration of drugs that may affect the anatomical or functional characteristics of the cornea (amiodarone, ß-blockers, tetracycline, etc.) - Any pathology of the eye associated with myopia and myopic changes inside the eye (for example, myopic staphyloma) that may affect the results of the study. - Regular intake of medications that may affect the proper function of the eye (antiglaucoma drugs, antibiotics, systemic immunosuppressive therapy, etc.) - Systemic pathologies with possible damage to the cornea. - Amblyopia. - Any other concomitant ocular pathology, trauma or surgery in history. - A patient who cannot adhere to the schedule of visits for research or treatment (for example, patients from other cities). - Suspected drug or alcohol abuse. |
Country | Name | City | State |
---|---|---|---|
Russian Federation | The S. N. Fyodorov Eye Microsurgery Federal State Institution | Moscow |
Lead Sponsor | Collaborator |
---|---|
The S.N. Fyodorov Eye Microsurgery State Institution | Alcon Research |
Russian Federation,
Bang S, Edell E, Yu Q, Pratzer K, Stark W. Accuracy of intraocular lens calculations using the IOLMaster in eyes with long axial length and a comparison of various formulas. Ophthalmology. 2011 Mar;118(3):503-6. doi: 10.1016/j.ophtha.2010.07.008. Epub 2010 Sep 29. — View Citation
Lane S, Collins S, Das KK, Maass S, Thatthamla I, Schatz H, Van Noy S, Jain R. Evaluation of intraocular lens mechanical stability. J Cataract Refract Surg. 2019 Apr;45(4):501-506. doi: 10.1016/j.jcrs.2018.10.043. Epub 2019 Jan 25. — View Citation
Remon L, Cabeza-Gil I, Calvo B, Poyales F, Garzon N. Biomechanical Stability of Three Intraocular Lenses With Different Haptic Designs: In Silico and In Vivo Evaluation. J Refract Surg. 2020 Sep 1;36(9):617-624. doi: 10.3928/1081597X-20200713-02. — View Citation
Wirtitsch MG, Findl O, Menapace R, Kriechbaum K, Koeppl C, Buehl W, Drexler W. Effect of haptic design on change in axial lens position after cataract surgery. J Cataract Refract Surg. 2004 Jan;30(1):45-51. doi: 10.1016/S0886-3350(03)00459-0. — View Citation
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Intraocular lens axial displacement | Axial displacement of the intraocular lens, stable position of the intraocular lens in the capsule bag after surgery, optics tilt, deviation from baseline, the distance from the corneal epithelium to the anterior surface of the intraocular lens, the stretching degree of the surgical wound will be assessed by the anterior segment OCT (AS-OCT). | 6 months | |
Secondary | Near and distance vision visual acuity | Improving the clarity of images of observed objects. For one focus distance (reading and working at near / far (depending on the calculation of the IOL for emmetropia or weak myopic refraction) / intermediate distance, it is possible to use spectacle correction in the postoperative period. | 6 months | |
Secondary | Patient's subjective satisfaction of with the quality of vision | Increased subjective satisfaction of patients with the quality of vision after surgery will be assessed using the VF-14 questionnaire (Steinberg E.P., 1994). | 6 months | |
Secondary | Deviation from emmetropic refraction | Accurate IOL calculation before surgery. | 6 months | |
Secondary | Number of intra- and postoperative complications | Intra- and postoperative complications in the operated eye will be assessed according to the observation data of the research subjects. | 6 months |
Status | Clinical Trial | Phase | |
---|---|---|---|
Completed |
NCT04998409 -
Evaluation of a Spherical Hydrophilic Acrylic Intraocular Lens
|
||
Completed |
NCT04252716 -
VISPER: Randomised Comparison of Two OVDs in Cataract Surgery
|
||
Recruiting |
NCT05110222 -
Cataract Lens Hardness Based on Phaco Tip Resistance
|
||
Recruiting |
NCT04266847 -
Prospective Clinical Study of Preoperative and Postoperative Unilateral Mild Cataract Patients
|
N/A | |
Recruiting |
NCT04175951 -
Tecnis Eyhance Versus Rayner RayOne Study
|
N/A | |
Recruiting |
NCT04572334 -
Eyhance Autorefraction Study
|
N/A | |
Completed |
NCT04140383 -
Cataract Surgery In Patients With Advanced Age
|
||
Active, not recruiting |
NCT04570579 -
Impact of a Novel Extended Depth of Focus Intraocular Lens on Visual and Lifestyle Enhancement
|
||
Completed |
NCT05347615 -
Achieving Hybrid Monovision By Paring Monofocal And EDOF Lens Technology
|
||
Recruiting |
NCT05148507 -
Optimization of the Ocular Surface Prior to Cataract Surgery Using PROKERA
|
N/A | |
Completed |
NCT04655274 -
Comparision of Visual Outcomes and Patient Satisfaction Between Two Diffractive Trifocal Intraocular Lenses
|
||
Completed |
NCT04255706 -
Repeatability in Measurements of Two ssOCT and One OLCR Biometer
|
N/A | |
Completed |
NCT05287269 -
Ocular Coherence Tomography During Cataract Assessment
|
||
Completed |
NCT04545671 -
Evaluation of a Trifocal Lens
|
||
Completed |
NCT04580550 -
Axial Length Variability
|
N/A | |
Recruiting |
NCT04265846 -
Prospective Clinical Study of Different Intraocular Lens Implantation Designed for the Correction of Presbyopia
|
||
Not yet recruiting |
NCT06429527 -
Vision Test App and Questionnaire for 1-Week Post-Cataract Surgery Follow-Up: A Multi-Center Randomized Controlled Trial
|
N/A | |
Completed |
NCT03970525 -
Venturi and Peristaltic Based Phacoemulsification in Femtosecond Laser Cataract Surgery
|
||
Completed |
NCT04333056 -
Comparison Between Two Ss-OCT Biometry
|
||
Completed |
NCT05578339 -
Predicting the Lens Capsular Bag Size Using Pre-operative Biometry
|
N/A |