1. e-Poster Rio de Janeiro Corneal Tomography and Biomechanics Study Group e-Poster Rio de Janeiro Corneal Tomography and Biomechanics Study Group Clinical Correlation of Scheimpflug Corneal Tomography and Biomechanics: Case Studies to Differentiate Thick Normal from Edematous Corneas Ricardo Valente, MD Gustavo Bonfadini MD, Frederico Guerra MD, Bruno Valbon MD, Fernanda Fonyat MD, Renato Ambrosio Jr MD PhD* Purpose: to correlate clinical findings on rotating Scheimpflug corneal tomography (Oculus Pentacam) and corneal biomechanics analysis (Reichert ORA) in special cases with thick corneal conditions, comparing with normal thick corneas. *Dr. Ambrósio is a consultant for Oculus and is on the speaker bureau for Reichert, Allergan, Alcon and Moria.

2. e-Poster Rio de Janeiro Corneal Tomography and Biomechanics Study Group e-Poster Rio de Janeiro Corneal Tomography and Biomechanics Study Group Pentacam HR and ORA was performed in cases with: Corneal Thickness Profiles and ORA parameters will be correlated. Specular microscopy was performed in all cases to document endothelial counts and presence or not of corneal guttae. Methods Thin cornea - normal biomechanics“Normal” Thick Cornea with Ocular Hypertension Thicker cornea with Fuchs dystrophyEndotheliitis Keratoconus with FuchsEarly Edematous Thick Cornea with Glaucoma

3. e-Poster Rio de Janeiro Corneal Tomography and Biomechanics Study Group Thin cornea - normal biomechanics 41years old with normal thin cornea CCT: 463micra CH: 10.6mmHg with normal ORA signal

4. e-Poster Rio de Janeiro Corneal Tomography and Biomechanics Study Group Keratoconus and Guttata: Can you have edema with 400 micron? Female patient, 40 years with moderate glaucoma and thin cornea Severe guttae in OU CCT: 404 micra, 399 micra CTSP and PTI (Thickness profiles) demonstrate edematous pattern Curvature maps: nasal-temporal asymmetry with temporal steepening Suspicious Elevation Maps Diagnosis: Early Fuchs Dystrophy; Forme Fruste Keratoconus and Glaucoma OD

5. e-Poster Rio de Janeiro Corneal Tomography and Biomechanics Study Group Corneal Biomechanics

6. e-Poster Rio de Janeiro Corneal Tomography and Biomechanics Study Group Endotheliitis Female 61 years OS Scheimpflug Image Corneal Biomechanics

7. e-Poster Rio de Janeiro Corneal Tomography and Biomechanics Study Group Endotheliitis Male 54years OS Scheimpflug Image Corneal Biomechanics

8. e-Poster Rio de Janeiro Corneal Tomography and Biomechanics Study Group “Normal” Thick Cornea with Ocular Hypertension Female patient, 62 years Diagnosis: Ocular Hipertension and thin cornea Holladay’s Relative Pachymetry Scheimpflug Images

9. e-Poster Rio de Janeiro Corneal Tomography and Biomechanics Study Group “Normal” Thick Cornea with Ocular Hypertension Corneal Biomechanics Optic Nerve Study (HRT 3)

10. e-Poster Rio de Janeiro Corneal Tomography and Biomechanics Study Group Early Edematous Thick Cornea with Glaucoma Female patient, 62 years Diagnosis: Glaucoma and thin cornea Corneal Thickness Spatial ProfileHolladay’s Relative Pachymetry Scheimpflug Images

11. e-Poster Rio de Janeiro Corneal Tomography and Biomechanics Study Group Early Edematous Thick Cornea with Glaucoma Corneal Biomechanics Specular Micrsoscopy (Endothelium)

12. e-Poster Rio de Janeiro Corneal Tomography and Biomechanics Study Group Conclusion Corneal tomography and biomechanics help differentiating edematous corneas from a normal thick corneas, as well as a normal thin cornea and an ectatic cornea