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| Process of Prescribing£º |
FAX or email your topography
(Including 3mm, 5mm, 7mm K values) |
¡ú |
Offer your prescription |
¡ú |
Adjust the topography Regularly |
| ¨ˆ Advantages |
- Specifically suitable for patients with myopia lower than
-9.50D.
- Clinics offer the service must have a topographer to analyse
cornea surface and to give 3mm, 5mm, 7mm K values for the lens
designers. This set must be adjusted regularly by the optometrists.
- To analyse the data of the topography and to design MCT lens,
a set of related software is required.
- Machining accuracy of the tools must be higher than ISO standard
with the distinguishability of higher than 0.001mm.
- Operators should be specialized in ophthalmology & optometry,
and have the skills of evaluation and follow-up visit.
- Lens decentralization hardly appears with MCT lens, hence
lower the possibility of astigmatism, which is supposed to be
a common complication of OK lens and a main reason of lens exchange
and disfit.
- In conformity to tear flow and exchange, lens is designed
to have the minimal passive affections to the cornea and thus
lower the possibility of Keratitis.
- Less time and attention needed by both practitioners and patients
on after-sales service, makes the whole procedure more efficient.
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| ¨ˆ MCT successful case |
| Patient Wang OS¡ª4.5-0.75¡ú1.0, OD¡ª5.50¡ú1.0 |
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| ¨ˆ MCT order samples |
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| ¨ˆ Comparison
of MCT and OK lens |
| MCT V¡¤S OK |
MCT |
OK |
| Design |
Based on data of the entire cornea |
Based on HK/VK of central cornea |
| Topography |
Advanced topography & software |
Old-typed topography & software |
| Myopia corrected maximal |
-8.75D |
-5.0D |
| Success ratio of first fit |
95%¡«98% |
75%¡«80% |
| Incidence ratio of astigmatism (within 3 months) |
5%¡«10% |
20%¡«30% |
| Keratitis ratio |
Low |
Higher |
| Day / night wear |
Day / Night |
Night mostly |
| Difficulties of after-sales service |
Low |
High |
| Predictability |
High |
Lower |
| Patients satisfaction |
High |
Lower |
| Demand of machining accuracy |
Extremely high |
Lower |
| Normalization & specialization of prescribing |
Normalization & specialization |
Not as |
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