Foldable versus rigid intraocular lenses in phacoemulsification cataract surgery in Nepal
ISRCTN | ISRCTN63984643 |
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DOI | https://doi.org/10.1186/ISRCTN63984643 |
Secondary identifying numbers | N/A |
- Submission date
- 29/10/2010
- Registration date
- 09/02/2011
- Last edited
- 15/02/2011
- Recruitment status
- No longer recruiting
- Overall study status
- Completed
- Condition category
- Eye Diseases
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data
Record updated in last year
Plain English summary of protocol
Not provided at time of registration
Contact information
Dr Albrecht Hennig
Scientific
Scientific
Sagarmatha Choudhary Eye Hospital
G.P.O. Box 15108
Kathmandu
Lahan
-
Nepal
Phone | +977 (0)33 560 402 |
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albrecht.hennig@erec-p.org |
Study information
Study design | Randomised interventional single-centre study |
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Primary study design | Interventional |
Secondary study design | Randomised controlled trial |
Study setting(s) | Hospital |
Study type | Treatment |
Participant information sheet | Not available in web format, please use the contact details below to request a patient information sheet |
Scientific title | Randomised controlled trial comparing the effectiveness and cost of foldable and rigid intraocular lenses in phacoemulsification cataract surgery in Nepal |
Study objectives | The main aim of the trial is to compare the outcome of foldable and rigid intraocular lenses (IOLs) in phacoemulsification cataract surgery. There is no significant difference in the visual outcome of phacoemulisfication using either a rigid polymethylacrylate posterior chamber intraocular lens (PMMA PC IOL) or a foldable PC IOL. |
Ethics approval(s) | 1. London School of Hygiene and Tropical Medicine (LSHTM) approved on the 22nd July 2010 (ref: 5714) 2. Nepal Netra Jyoti Sangh (NNJS), Institutional Research Review Board, Kathmandu/NEPAL, approved on the 27th August 2010 (ref: 52-067-068) |
Health condition(s) or problem(s) studied | Cataract surgery (phacoemulsification) |
Intervention | In both treatment groups, the cataract will be removed by phacoemulsification, using phaco chop technique (phaco machines: OS-3 OERTLI, Megatron GEUDER). The remaining cortex will be removed with Simcoe cannula and/or bimanual irrigation/aspiration system. In the "foldable" group, the intraocular lens (hydrophilic acrylic, IOCare, India) will be inserted with an injector through the 2.5 mm corneal incision and placed in the capsular bag. In the "rigid" group, the sclero-corneal incision will be enlarged to 5 mm and a 5 mm optic PMMA IOL (IOCare, India) will be inserted into the capsular bag. The surgery will be performed by two surgeons, both of whom are experienced in using both types of lenses. Treatment is a one-off procedure; follow-up is 12 months. |
Intervention type | Other |
Primary outcome measure | Visual acuity at one year after surgery in the operated eye: 1. Uncorrected visual acuity of 6/9 or more (i.e. very good functional vision) 2. Uncorrected visual acuity of 6/18 or more (i.e. operated eye is no longer "visually impaired" by World Health Organization [WHO] definitions) 3. Best corrected visual acuity worse than 6/60 (i.e. eye is effectively blind) |
Secondary outcome measures | 1. Visual acuity in the operated eye at other time points 2. Complications during surgery 3. Early post-operative complications 4. Long term complications 5. Astigmatism 6. Cost Measured at 6 weeks and 12 months. |
Overall study start date | 25/09/2010 |
Completion date | 24/09/2012 |
Eligibility
Participant type(s) | Patient |
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Age group | Adult |
Sex | Both |
Target number of participants | 1200 |
Key inclusion criteria | Patients with cataract, aged 35 to 70 years, either sex |
Key exclusion criteria | 1. Corneal endothelial disease (Fuchs' dystrophy; corneal stromal scarring) 2. Intraocular pressure greater than 22 mmHg 3. A-Scan finding: less than 17.0 dpt, greater than 26.0 dpt 4. Any other eye disease except age related cataract 5. Very advanced hard lens nuclei, where phaco is not suitable (grade III+) 6. Diabetes mellitus |
Date of first enrolment | 25/09/2010 |
Date of final enrolment | 24/09/2012 |
Locations
Countries of recruitment
- Nepal
Study participating centre
Sagarmatha Choudhary Eye Hospital
Lahan
-
Nepal
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Nepal
Sponsor information
Sagarmatha Choudhary Eye Hospital (Nepal)
Hospital/treatment centre
Hospital/treatment centre
G.P.O.Box 15108
Kathmandu
Lahan
-
Nepal
Website | http://www.erec-p.org |
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Funders
Funder type
Hospital/treatment centre
Sagarmatha Choudhary Eye Hospital (Nepal)
No information available
CBM eV (Germany)
No information available
Results and Publications
Intention to publish date | |
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Individual participant data (IPD) Intention to share | No |
IPD sharing plan summary | Not provided at time of registration |
Publication and dissemination plan | Not provided at time of registration |
IPD sharing plan |