| A.LENS DESIGN |
- Refractive design
- Distance dominated
- 4.5 Diopter add
- Three zone.
| a) First Zone |
:Distnce dominant (Dia 1.9 mm) |
| b) Second Zone |
:Near dominant (Dia 1.9 mm to Dia 2.8 mm) |
| c) Third Zone |
:Distnce dominant (Dia 2.8 mm to Dia 6.0 mm ) |
- Material: Hema 26% water content
- The perfect centration
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| B.GOALS TO SET |
- Maintain distance acuity and function (20/20) distance
- Decrease dependence on glasses(j3 or better)
- Increase range of focus (near & distance)
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| C.FOR BETTER RESULT |
- Counselling and selecting the patient
- Accuracy in IOL calculation
- Precision cataract surgery.
- Do second eye soon.
- May take three months to adjust
|
| 1. COUNSELLING AND SELECTING THE PATIENT |
| a)Patients are suitable for MULTIFOCAL IOL'S |
- Best-corrected visual acuity should be 20/40 or better at distance and J3 at near.
- Patients should have 1.5D or less of astigmatism.
- Patients with flexible,easygoing personalities.
- Younger may be better.
- Motivates to be less spectacle dependent.
|
| b)Patients are not suitable for MULTIFOCAL IOL'S |
- Patients with best corrected visual activity worse than 20/80
- High astigmatism reduces near visual fuinction.
- Patients with abnormally long or short eyes due to more in accuracy in IOL power calculations.
- Patients with pupils smaller then 2.5mm.
- Patients have demanding life styles (or) frequently drive at night (or) professional drivers.
- Having night glare complaint
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| 2.IOL CALCULATIONS |
- Calibrate the biometry and keratometry instruments.
- Carefully review biometry and keratometry on the patient.
- Use Acryfold foldable lenses at least 50 cases and collect the datas from planning to post op.Find out your personalized surgeon constant. This consist of A-constant,anterior chamber depth and or surgeon factor.
- Use a third generation IOL power formula that's based on Ac depth.
- For best results put multifocal on both the eyes.
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| PRECISION CATARACT SURGERY |
- Have an intact capsular bag and secure placement of the IOL within the bag.
- For best results with a 3mm incision and 5mm to 5.5mm capsulahexis.
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