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Start Over Author "Knutsson KA" Journal acta ophthalmologica
5 results on '"Knutsson KA"'

1. Modified big‐bubble technique compared to manual dissection deep anterior lamellar keratoplasty in the treatment of keratoconus

Author

Paolo Rama, Karl Anders Knutsson, Giorgio Paganoni, Knutsson, Ka, Rama, P, and Paganoni, G

Subjects
Adult, Male, Keratoconus, medicine.medical_specialty, Visual acuity, genetic structures, Corneal Stroma, Visual Acuity, Lamellar keratoplasty, Cell Count, Refraction, Ocular, Corneal Transplantation, Young Adult, Manual dissection, Suture (anatomy), medicine, Humans, In patient, Prospective Studies, business.industry, Dissection, Endothelium, Corneal, Corneal Topography, General Medicine, Middle Aged, medicine.disease, Surgery, Endothelial cell density, Ophthalmology, Female, medicine.symptom, business
Abstract

Purpose To evaluate the clinical findings and results of manual dissection deep anterior lamellar keratoplasty (DALK) compared to a modified big-bubble DALK technique in eyes affected by keratoconus. Methods Sixty eyes of 60 patients with keratoconus were treated with one of the two surgical techniques manual DALK (n = 30); big-bubble DALK (n = 30). The main outcomes measured were visual acuity, corneal topographic parameters, thickness of residual stroma and endothelial cell density (ECD). Patients were examined postoperatively at 1 month, 6 months, 1 year and 1 month after suture removal. Results Final best spectacle-corrected visual acuity (BSCVA) measured 1 month after suture removal was 0.11 ± 0.08 LogMAR in the big-bubble group compared to 0.13 ± 0.08 in the manual DALK group (p = 0.227). In patients treated with the big-bubble technique without complications (Descemet's membrane completely bared), the stromal residue was not measureable. Mean stromal residual thickness in the manual DALK group was 30.50 ± 27.60 μm. Data analysis of the manual DALK group demonstrated a significant correlation between BSCVA and residual stromal thickness; lower residual stromal thickness correlated with better BSCVA values (Spearman ρ = 0.509, p = 0.018). Postoperative ECD was similar in both groups at all intervals, with no statistically significant differences. In both groups, ECD loss was only significant during the 1- to 6-month interval (p = 0.001 and p

Published
2015

3. Modified big-bubble technique compared to manual dissection deep anterior lamellar keratoplasty in the treatment of keratoconus.

Author

Knutsson KA, Rama P, and Paganoni G

Subjects
Adult, Cell Count, Corneal Stroma anatomy & histology, Corneal Topography, Endothelium, Corneal cytology, Female, Humans, Keratoconus physiopathology, Male, Middle Aged, Prospective Studies, Refraction, Ocular physiology, Visual Acuity physiology, Young Adult, Corneal Transplantation methods, Dissection methods, Keratoconus surgery
Abstract

Purpose: To evaluate the clinical findings and results of manual dissection deep anterior lamellar keratoplasty (DALK) compared to a modified big-bubble DALK technique in eyes affected by keratoconus., Methods: Sixty eyes of 60 patients with keratoconus were treated with one of the two surgical techniques manual DALK (n = 30); big-bubble DALK (n = 30). The main outcomes measured were visual acuity, corneal topographic parameters, thickness of residual stroma and endothelial cell density (ECD). Patients were examined postoperatively at 1 month, 6 months, 1 year and 1 month after suture removal., Results: Final best spectacle-corrected visual acuity (BSCVA) measured 1 month after suture removal was 0.11 ± 0.08 LogMAR in the big-bubble group compared to 0.13 ± 0.08 in the manual DALK group (p = 0.227). In patients treated with the big-bubble technique without complications (Descemet's membrane completely bared), the stromal residue was not measureable. Mean stromal residual thickness in the manual DALK group was 30.50 ± 27.60 μm. Data analysis of the manual DALK group demonstrated a significant correlation between BSCVA and residual stromal thickness; lower residual stromal thickness correlated with better BSCVA values (Spearman ρ = 0.509, p = 0.018). Postoperative ECD was similar in both groups at all intervals, with no statistically significant differences. In both groups, ECD loss was only significant during the 1- to 6-month interval (p = 0.001 and p < 0.001 in the big-bubble DALK and manual DALK groups, respectively)., Conclusion: Manual DALK provides comparable results to big-bubble DALK. Big-bubble DALK permits faster visual recovery and is a surgical technique, which can be easily converted to manual DALK in cases of unsuccessful 'big-bubble' formation., (© 2015 Acta Ophthalmologica Scandinavica Foundation. Published by John Wiley & Sons Ltd.)

Published
2015
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4. Accidental injection of dexamethasone intravitreal implant in the crystalline lens.

Author

Fasce F, Battaglia Parodi M, Knutsson KA, Spinelli A, Mauceri P, Bolognesi G, and Bandello F

Subjects
Aged, Cataract diagnosis, Device Removal, Dexamethasone administration & dosage, Drug Implants, Female, Glucocorticoids administration & dosage, Humans, Lens Implantation, Intraocular, Lens, Crystalline pathology, Macular Edema etiology, Male, Phacoemulsification, Retinal Vein Occlusion complications, Visual Acuity, Vitreous Body drug effects, Cataract chemically induced, Dexamethasone adverse effects, Glucocorticoids adverse effects, Lens, Crystalline drug effects, Macular Edema drug therapy, Medication Errors adverse effects
Published
2014
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5. Macular hole after injection of dexamethasone intravitreal implant for macular oedema due to central retinal vein occlusion.

Author

De Benedetto U, Battaglia Parodi M, Knutsson KA, Lattanzio R, Bandello F, and Iacono P

Subjects
Aged, Dexamethasone administration & dosage, Diabetes Mellitus, Type 2 complications, Female, Fluorescein Angiography, Glucocorticoids administration & dosage, Humans, Intravitreal Injections, Macular Edema diagnosis, Macular Edema etiology, Retinal Perforations diagnosis, Retinal Vein Occlusion diagnosis, Tomography, Optical Coherence, Visual Acuity physiology, Vitreous Body, Dexamethasone adverse effects, Drug Implants adverse effects, Glucocorticoids adverse effects, Macular Edema drug therapy, Retinal Perforations etiology, Retinal Vein Occlusion complications
Published
2013
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