PREMIS device
*Peramis* is an advanced imaging system in ophthalmology, mainly used for *corneal topography* and *ocular surface analysis*. This device performs high-precision 3D mapping of the cornea and has wide application in the diagnosis and management of eye diseases.
- ### *🔬 Main uses of Peramis in ophthalmology*
- ### *📊 Comparison of Peramis with similar devices (such as Pentacam and MS 39)*
- ### *💡 Key Benefits of Peramis*
#### *1. Diagnosis and monitoring of keratoconus (corneal hump)*
- *Early detection* of abnormal changes in corneal curvature.
- *Monitoring disease progression* after treatments such as *Cross-linking (CXL)*.
- *Evaluation of corneal thickness (Pachymetry)* to prevent surgical complications.
#### *2. Planning refractive surgeries (LASIK, LASEK, PRK)*
- *Accurate determination of corneal thickness* to ensure surgical safety.
- *Simulation of surgical results* based on topographic maps.
- *Reduction of post-surgical complications* such as corneal ectasia.
#### *3. Contact lens fitting (especially in keratoconus)*
- *Design of rigid contact lenses (RGP)* to suit irregular corneal curvature.
- *Optimization of scleral lenses* for patients with severe dry eye.
#### *4. Evaluation before and after cataract surgery*
- *Calculation of intraocular lens power (IOL Power)* with high accuracy.
- *Reduction of refractive errors* after surgery.
#### *5. Investigation of dry eye and corneal surface disorders*
- *Analysis of the quality of the eye surface* in patients with severe dry eye.
- *Evaluation of the effect of treatments such as punctal plugs or lipiflo*.
| *Feature* | *Peramis* | *Pentacam* | *MS 39* |
|---------------------------|------------------------------------|-----------------------------------|------------------------------------|
| *Corneal Topography* | ✅ High Accuracy in Mapping | ✅ Scheimpflug System | ✅ Combination of Topography + OCT |
| *Keratoconus Diagnosis* | ✅ Dedicated Analysis Page | ✅ Advanced Indicators (BEL, D) | ✅ Integrated Analysis |
| *Anterior OCT* | ❌ No | ❌ No | ✅ Yes (Spectral Domain) |
| *Application in IOL Surgery* | ✅ Calculation with Ray-Tracing Method | ✅ Different Formulas | ✅ Ray-Tracing + Topography |
| *Piopilography* | ✅ Yes | ❌ No | ✅ Yes |
✔ *High accuracy in corneal topography* for diagnosing eye diseases.
✔ *Non-contact and fast* (imaging is done in seconds).
✔ *Suitable for planning laser surgeries and contact lenses*.
✔ *Automatic reporting* to facilitate medical decision-making.