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evaluate the clinical outcomes of routine CTR insertion in conjunction with hydrophilic versus hydrophobic IOLs following phacoemulsification.
Phacoemulsification with intraocular lens (IOL) implantation is the standard surgical approach for cataract extraction. The choice between hydrophilic and hydrophobic IOLs has been debated, with studies suggesting differences in posterior capsule opacification (PCO) rates and capsular bag stability. Capsular tension rings (CTRs) are devices designed to stabilize the capsular bag, particularly in cases with zonular weakness. While CTRs are beneficial in complex cases, their routine use remains controversial. Understanding the interaction between CTRs and IOL materials could inform surgical practices and improve patient outcomes
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Group A: CTR + Hydrophilic IOL | Active Comparator | phacoemulsification and insertion of CTR the hydrophilic IOL |
|
| Group B: Hydrophobic IOL alone | Active Comparator | phacoemulsification and insertiion of hydrophobic IOL |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| phacoemulsification | Procedure | cataract extracton with phacoemulsification |
|
| Measure | Description | Time Frame |
|---|---|---|
| Change in BCVA (LogMAR) | The formula: logMAR score (0.1 NL + 0.02 nl) where NL = number of lines completely read and nl = number of additional letters read ap- plies. For this method, the higher the logMAR VA score, the better the visual acuity. | at 1, 3, and 6 months postoperatively. |
| Refractive error measurements (spherical equivalent) | SE was calculated as the spherical power of the refractive error plus one-half of the cylinder power. Hyperopia was defined as a spherical equivalent (SE) values of ≥ + 1.00 diopter (D) and emmetropia as a SE ranging between 0.99 and - 0.49 D. Myopia was defined as a SE refraction of ≤ -0.50 D. | at 1, 3, and 6 months postoperatively. |
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Inclusion Criteria:
• Adults aged 40-80 years.
Exclusion Criteria:
• Previous ocular surgery.
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Al-Azhar Faculty of Medicine | Cairo | Egypt |
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| ID | Term |
|---|---|
| D018918 | Phacoemulsification |
| ID | Term |
|---|---|
| D002387 | Cataract Extraction |
| D054140 | Refractive Surgical Procedures |
| D013508 | Ophthalmologic Surgical Procedures |
| D013514 | Surgical Procedures, Operative |
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| CTR | Device | insertion of capsualr tension ring |
|
| hydrophilic IOL | Device | implantation of hydrophilic IOL |
|
| Hydrophobic IOL | Device | insertion of hydrophobic IOL |
|
| D059708 | Ultrasonic Surgical Procedures |