The goal of this study is to study the restoration of quality of vision, expressed as straylight, in the immediate period after cataract surgery with two different phacoemulsification technologies.
Cataract is an opacification of the lens. With cataract surgery, the lens is surgically removed after which a clear artificial intraocular lens is implanted. For patients, it is important that they regain functional vision as quickly as possible after surgery as a limited vision may increase the risk of falling and increases the dependency on other people. Surgical removal of the lens is done with a phacoemulsification system. Differences between phacoemulsification systems are the used pump type, the way the needle oscillates, and the fluid dynamics of the system. It is unknown whether any of the available systems offer an advantage on the amount of corneal oedema that develops after surgery and, therefore, results in a more rapid restoration of functional vision.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
15
Cataract surgery performed with the Centurion phacoemulsification system
Cataract surgery performed with the Quatera 700 phacoemulsification system
Straylight
Amount of straylight measured with C-Quant, expressed as log(s)
Time frame: preoperative
Straylight
Amount of straylight measured with C-Quant, expressed as log(s)
Time frame: 1-2 hours after surgery
Straylight
Amount of straylight measured with C-Quant, expressed as log(s)
Time frame: 1 day after surgery
Straylight
Amount of straylight measured with C-Quant, expressed as log(s)
Time frame: 1 week after surgery
Straylight
Amount of straylight measured with C-Quant, expressed as log(s)
Time frame: 1 month after surgery
Corneal densitometry
Corneal densitometry measured with Pentacam, expressed as percentage
Time frame: preoperative
Corneal densitometry
Corneal densitometry measured with Pentacam, expressed as percentage
Time frame: 1-2 hours after surgery
Corneal densitometry
Corneal densitometry measured with Pentacam, expressed as percentage
Time frame: 1 day after surgery
Corneal densitometry
Corneal densitometry measured with Pentacam, expressed as percentage
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.
Time frame: 1 week after surgery
Corneal densitometry
Corneal densitometry measured with Pentacam, expressed as percentage
Time frame: 1 month after surgery
Amount of phaco energy used
Amount of phaco energy used, expressed as Cumulative Dissipated Energy (CDE, for Alcon Centurion) or as Equivalent Phaco Time (EPT, for Zeiss Quatera 700)
Time frame: Surgery day
Amount of balanced salt solution used
Amount of balanced salt solution used, expressed in milliliters
Time frame: Surgery day
Total surgery time
Total surgery time per eye
Time frame: Surgery day
Uncorrected Distance Visual Acuity
Uncorrected Distance Visual Acuity, expressed as logMAR
Time frame: preoperative
Uncorrected Distance Visual Acuity
Uncorrected Distance Visual Acuity, expressed as logMAR
Time frame: 1-2 hours after surgery
Uncorrected Distance Visual Acuity
Uncorrected Distance Visual Acuity, expressed as logMAR
Time frame: 1 day after surgery
Uncorrected Distance Visual Acuity
Uncorrected Distance Visual Acuity, expressed as logMAR
Time frame: 1 week after surgery
Uncorrected Distance Visual Acuity
Uncorrected Distance Visual Acuity, expressed as logMAR
Time frame: 1 month after surgery
Corrected Distance Visual Acuity
Corrected Distance Visual Acuity, expressed as logMAR
Time frame: preoperative
Corrected Distance Visual Acuity
Corrected Distance Visual Acuity, expressed as logMAR
Time frame: 1 day after surgery
Corrected Distance Visual Acuity
Corrected Distance Visual Acuity, expressed as logMAR
Time frame: 1 week after surgery
Corneal pachymetry
Corneal thickness measured with Pentacam, expressed as um
Time frame: 1 month after surgery
Corneal pachymetry
Corneal thickness measured with Pentacam, expressed as um
Time frame: preoperative
Corneal pachymetry
Corneal thickness measured with Pentacam, expressed as um
Time frame: 1-2 hours after surgery
Corneal pachymetry
Corneal thickness measured with Pentacam, expressed as um
Time frame: 1 day after surgery
Corneal pachymetry
Corneal thickness measured with Pentacam, expressed as um
Time frame: 1 week after surgery
Presence of corneal oedema
Presence of corneal oedema with slit lamp biomicroscopy
Time frame: preoperative
Presence of corneal oedema
Presence of corneal oedema with slit lamp biomicroscopy
Time frame: 1-2 hours after surgery
Presence of corneal oedema
Presence of corneal oedema with slit lamp biomicroscopy
Time frame: 1 day after surgery
Presence of corneal oedema
Presence of corneal oedema with slit lamp biomicroscopy
Time frame: 1 week after surgery
Presence of corneal oedema
Presence of corneal oedema with slit lamp biomicroscopy
Time frame: 1 month after surgery
Catquest-9SF
Catquest-9-Short-Form patient-reported outcome measure, expressed as Rasch score (min: -6.14, max: +5.71, lower scores mean a better result) and sum score (min: 9, max: 36, lower scores mean a better result)
Time frame: preoperative
Catquest-9SF
Catquest-9-Short-Form patient-reported outcome measure, expressed as Rasch score (min: -6.14, max: +5.71, lower scores mean a better result) and sum score (min: 9, max: 36, lower scores mean a better result)
Time frame: 1-2 hours after surgery
Catquest-9SF
Catquest-9-Short-Form patient-reported outcome measure, expressed as Rasch score (min: -6.14, max: +5.71, lower scores mean a better result) and sum score (min: 9, max: 36, lower scores mean a better result)
Time frame: 1 day after surgery
Catquest-9SF
Catquest-9-Short-Form patient-reported outcome measure, expressed as Rasch score (min: -6.14, max: +5.71, lower scores mean a better result) and sum score (min: 9, max: 36, lower scores mean a better result)
Time frame: 1 week after surgery
Catquest-9SF
Catquest-9-Short-Form patient-reported outcome measure, expressed as Rasch score (min: -6.14, max: +5.71, lower scores mean a better result) and sum score (min: 9, max: 36, lower scores mean a better result)
Time frame: 1 month after surgery
Patient-Perceived Satisfactory Improvement in Vision
Degree of satisfactory improvement in vision (possible answers are: a) worse, b) unchanged, c) unsatisfactory improved, d) satisfactory improved, e) good to very good improved)
Time frame: 1-2 hours after surgery
Patient-Perceived Satisfactory Improvement in Vision
Degree of satisfactory improvement in vision (possible answers are: a) worse, b) unchanged, c) unsatisfactory improved, d) satisfactory improved, e) good to very good improved)
Time frame: 1 day after surgery
Patient-Perceived Satisfactory Improvement in Vision
Degree of satisfactory improvement in vision (possible answers are: a) worse, b) unchanged, c) unsatisfactory improved, d) satisfactory improved, e) good to very good improved)
Time frame: 1 week after surgery
Patient-Perceived Satisfactory Improvement in Vision
Degree of satisfactory improvement in vision (possible answers are: a) worse, b) unchanged, c) unsatisfactory improved, d) satisfactory improved, e) good to very good improved)
Time frame: 1 month after surgery