https://www.gatinel.com Ophtalmologie Wed, 22 Jul 2026 08:28:10 +0000 fr-FR hourly 1 https://www.gatinel.com/calculateurs/simulateur-bilateral-dablation-corneenne-od-os/ Tue, 09 Jun 2026 11:58:28 +0000 https://www.gatinel.com/calculateurs/simulateur-bilateral-dablation-corneenne-od-os/ This tool plans refractive surgery for both eyes (OD and OS) at the same time on a single page. From preoperative pachymetry, refraction and corneal parameters, it estimates the residual stromal bed (RSB), the percent tissue altered (PTA), the ablation depth and the tissue volumes for the chosen technique (PRK / TransPRK, LASIK / Femto-LASIK or SMILE / KLEX). Colour-coded alerts compare these values against the surgeon-defined safety thresholds to limit the risk of post-operative ectasia.

Key features

• Simultaneous bilateral planning for OD and OS, with one-click symmetry copy between the two eyes
• Choice of one or several techniques: PRK / TransPRK, LASIK / Femto-LASIK, SMILE / KLEX
• Continuous clinical summary: RSB, PTA, central ablation, stromal depths, treated area and volumes
• Colour-coded safety alerts based on the customised RSB threshold and the 40% PTA limit
• Standard mode (average corneal parameters) and Custom mode (anterior and posterior radii and asphericities: R1, R2, Q1, Q2)
• 3D visualisations of the surfaces and the lenticule, K1/K2 meridian profiles, and PDF, CSV, TXT or clipboard export

]]> https://www.gatinel.com/calculateurs/presbypath-concepteur-de-profil-pseudo-accommodatif-personnalise/ Tue, 09 Jun 2026 11:58:28 +0000 https://www.gatinel.com/calculateurs/presbypath-concepteur-de-profil-pseudo-accommodatif-personnalise/ PRESBYpath converts a patient’s data — refraction, keratometry, asphericity and higher-order wavefront — into a custom multifocal corneal profile for presbyopic LASIK or PRK. The optimiser computes an asphericity change (ΔQ) or a combination of Zernike polynomials, together with a spherical addition, so as to maintain good image quality across the whole intended pseudo-accommodative vergence range, and for two pupil diameters at once (distance vision under mesopic conditions and near vision in myosis). Its distinctive feature is that it renders a vergence map expressed directly in dioptres rather than in microns of optical path difference.

Key features

• Design of patient-specific multifocal LASIK / PRK profiles
• Optimisation by an image-quality score across two pupils and the whole depth of field
• Two laser-programming strategies: modulating asphericity Q or spherical aberration
• Quality index combining MTF (MTF/MTFa), PSF, Strehl ratio and depth of field
• Vergence map in dioptres (total / low-order / higher-order aberrations)
• Ablation-profile audit, simulated optotype rendering and a Z(4,0) fallback mode without aberrometry

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