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Cataract surgical techniques have significantly changed in recent years with the widespread adoption of smaller and smaller clear corneal incisions for phacoemulsification. Microincision surgery has many advantages, including reduced surgically induced astigmatism, faster visual recovery, and reduced intra and postoperative inflammation. Curently, microcoaxial phacoemulsification is being performed through 1.8 as well as 2.2 mm incisions. However, there is still a debate as to which is the best absolute incision size for microcoaxial cataract surgery.
The aim of this study is to evaluate incision stability following microcoaxial phacoemulsification performed through 1.8 and 2.2 mm systems, as well as compare intraoperative performance and postoperative outcomes following microcoaxial phacoemulsification performed through these two incision sizes.
Cataract surgical techniques have significantly changed in recent years with the widespread adoption of smaller and smaller clear corneal incisions for phacoemulsification. Microincision surgery has many advantages, including reduced surgically induced astigmatism, faster visual recovery, and reduced intra and postoperative inflammation. In the recent times, microcoaxial phacoemulsification has gained popularity. The main advantage of this newer technique is that it uses the same methods as the conventional method but with smaller incisions. Curently, microcoaxial phacoemulsification is being performed through 1.8 as well as 2.2 mm incisions. However, there is still a debate as to which is the best absolute incision size for microcoaxial cataract surgery.
The aim of this study is to evaluate incision stability following microcoaxial phacoemulsification performed through 1.8 and 2.2 mm systems, as well as compare intraoperative performance and postoperative outcomes following microcoaxial phacoemulsification performed through these two incision sizes.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Phacoemulsification with 1.8mm incision | Active Comparator | Microcoaxial phacoemulsification was performed using a 1.8mm clear corneal incision |
|
| Phacoemulsification with 2.2mm incisi | Active Comparator | Microcoaxial phacoemulsificaiton will be performed through 2.2mm incision |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Microcoaxial Phacoemulsification | Procedure | Phacoemulsification through small clear corneal incision |
|
| Measure | Description | Time Frame |
|---|---|---|
| Ingress of Trypan blue from the Ocular Surface into the Anterior Chamber | At end of surgery, stromal hydration of all incisions will be performed.0.0125% trypan blue will be instilled on the conjunctival surface.After 2 minutes, the surface will be irrigated with balanced salt solution. 0.1ml aqeous aspirate will be obtained from the anterior chamber.Concentration of trypan blue in the aspirate will be ascertained by UV visible spectrophotometry. Log dilutions of concentration of trypan blue will be used for statistical analysis | Immediately at the end of surgery |
| Measure | Description | Time Frame |
|---|---|---|
| Surgically Induced Astigmatism | At baseline and 3 months postoperatively | |
| Corneal Endothelial Cell Loss | Baseline and 3 months postoperatively | |
| Change in Central Corneal Thickness |
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Inclusion Criteria: Uncomplicated age related cataracts, NO grade II III, IV (LOCS III classification)
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Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Abhay R Vasavada, MS,FRCS | Contact | 91-79-27490909 | icirc@abhayvasavada.com | |
| Vaishali A Vasavada, MS | Contact | 91-79-27492303 | icirc@abhayvasavada.com |
| Name | Affiliation | Role |
|---|---|---|
| Abhay R Vasavada, MS, FRCS | Iladevi Cataract and IOL Research Center | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Iladevi Cataract & IOL Research Centre | Recruiting | Ahmedabad | Gujarat | 380009 | India |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 19393887 | Background | Lee KM, Kwon HG, Joo CK. Microcoaxial cataract surgery outcomes: comparison of 1.8 mm system and 2.2 mm system. J Cataract Refract Surg. 2009 May;35(5):874-80. doi: 10.1016/j.jcrs.2008.12.031. |
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| Type | Date | Date Unknown |
|---|---|---|
| Release | Jul 23, 2012 | |
| Reset | Aug 24, 2012 |
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| Microcoaxial Phacoemulsification | Procedure | Phacoemulsification through clear corneal incision |
|
| Microcoaxial Phacoemulsification | Procedure | Microcoaxial Phacoemulsification through 1.8mm incision |
|
| Microcoaxial Phacoemulsification | Procedure | Microcoaxial phacoemulsification through 2.2mm incision |
|
| Baseline and 1 week |
| Anterior Chamber Inflammation | Baseline and 1 week |
| Anterior Chamber Inflammation | Baseline and 1 month |
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| Release Date | Unrelease Date | Unrelease Date Unknown | Reset Date | MCP Release Number |
|---|---|---|---|---|
| Jul 23, 2012 | Aug 24, 2012 |
| ID | Term |
|---|---|
| D002386 | Cataract |
| ID | Term |
|---|---|
| D007905 | Lens Diseases |
| D005128 | Eye Diseases |
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