Publication: Photographic-Based Optical Evaluation of Tissues and Biomaterials Used for Corneal Surface Repair: A New Easy-Applied Method.
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Date
2015-11-13
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Public Library of Science
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Abstract
PURPOSE
Tissues and biomaterials used for corneal surface repair require fulfilling specific optical standards prior to implantation in the patient. However, there is not a feasible evaluation method to be applied in clinical or Good Manufacturing Practice settings. In this study, we describe and assess an innovative easy-applied photographic-based method (PBM) for measuring functional optical blurring and transparency in corneal surface grafts.
METHODS
Plastic compressed collagen scaffolds (PCCS) and multilayered amniotic membranes (AM) samples were optically and histologically evaluated. Transparency and image blurring measures were obtained by PBM, analyzing photographic images of a standardized band pattern taken through the samples. These measures were compared and correlated to those obtained applying the Inverse Adding-Doubling (IAD) technique, which is the gold standard method.
RESULTS
All the samples used for optical evaluation by PBM or IAD were histological suitable. PCCS samples presented transmittance values higher than 60%, values that increased with increasing wavelength as determined by IAD. The PBM indicated that PCCS had a transparency ratio (TR) value of 80.3 ± 2.8%, with a blurring index (BI) of 50.6 ± 4.2%. TR and BI obtained from the PBM showed a high correlation (ρ>|0.6|) with the diffuse transmittance and the diffuse reflectance, both determined using the IAD (p<0.005). The AM optical properties showed that there was a largely linear relationship between the blurring and the number of amnion layers, with more layers producing greater blurring.
CONCLUSIONS
This innovative proposed method represents an easy-applied technique for evaluating transparency and blurriness of tissues and biomaterials used for corneal surface repair.
Description
Journal Article; Correction: doi: 10.1371/journal.pone.0146205.
MeSH Terms
Medical Subject Headings::Organisms::Eukaryota::Animals
Medical Subject Headings::Chemicals and Drugs::Biomedical and Dental Materials::Biocompatible Materials
Medical Subject Headings::Chemicals and Drugs::Macromolecular Substances::Polymers::Biopolymers::Collagen
Medical Subject Headings::Anatomy::Sense Organs::Eye::Anterior Eye Segment::Cornea
Medical Subject Headings::Analytical, Diagnostic and Therapeutic Techniques and Equipment::Surgical Procedures, Operative::Ophthalmologic Surgical Procedures::Refractive Surgical Procedures::Corneal Transplantation
Medical Subject Headings::Analytical, Diagnostic and Therapeutic Techniques and Equipment::Investigative Techniques::Equipment Design
Medical Subject Headings::Phenomena and Processes::Physical Phenomena::Optical Phenomena::Light
Medical Subject Headings::Analytical, Diagnostic and Therapeutic Techniques and Equipment::Diagnosis::Diagnostic Techniques and Procedures::Diagnostic Imaging::Photography
Medical Subject Headings::Analytical, Diagnostic and Therapeutic Techniques and Equipment::Investigative Techniques::Chemistry Techniques, Analytical::Photometry
Medical Subject Headings::Phenomena and Processes::Biological Phenomena::Biological Processes::Regeneration
Medical Subject Headings::Analytical, Diagnostic and Therapeutic Techniques and Equipment::Equipment and Supplies::Culture Media::Tissue Scaffolds
Medical Subject Headings::Anatomy::Tissues::Membranes::Extraembryonic Membranes::Amnion
Medical Subject Headings::Chemicals and Drugs::Biomedical and Dental Materials::Biocompatible Materials
Medical Subject Headings::Chemicals and Drugs::Macromolecular Substances::Polymers::Biopolymers::Collagen
Medical Subject Headings::Anatomy::Sense Organs::Eye::Anterior Eye Segment::Cornea
Medical Subject Headings::Analytical, Diagnostic and Therapeutic Techniques and Equipment::Surgical Procedures, Operative::Ophthalmologic Surgical Procedures::Refractive Surgical Procedures::Corneal Transplantation
Medical Subject Headings::Analytical, Diagnostic and Therapeutic Techniques and Equipment::Investigative Techniques::Equipment Design
Medical Subject Headings::Phenomena and Processes::Physical Phenomena::Optical Phenomena::Light
Medical Subject Headings::Analytical, Diagnostic and Therapeutic Techniques and Equipment::Diagnosis::Diagnostic Techniques and Procedures::Diagnostic Imaging::Photography
Medical Subject Headings::Analytical, Diagnostic and Therapeutic Techniques and Equipment::Investigative Techniques::Chemistry Techniques, Analytical::Photometry
Medical Subject Headings::Phenomena and Processes::Biological Phenomena::Biological Processes::Regeneration
Medical Subject Headings::Analytical, Diagnostic and Therapeutic Techniques and Equipment::Equipment and Supplies::Culture Media::Tissue Scaffolds
Medical Subject Headings::Anatomy::Tissues::Membranes::Extraembryonic Membranes::Amnion
DeCS Terms
CIE Terms
Keywords
Animales, Materiales biocompatibles, Colágeno, Córnea, Trasplante de córnea, Diseño de equipo, Luz, Fotografía, Fotometría, Regeneración, Andamios del tejido, Amnios
Citation
Gonzalez-Andrades M, Cardona Jde LC, Ionescu AM, Mosse CA, Brown RA. Photographic-Based Optical Evaluation of Tissues and Biomaterials Used for Corneal Surface Repair: A New Easy-Applied Method. PLoS ONE. 2015; 10(11):e0142099