Avaliação quantitativa das dimensões óculo-palpebrais em portadores de cavidade anoftálmica em uso de prótese ocular externa

Takahagi, Rodrigo Ueno; Gonçalves, Fernando; Schellini, Silvana Artioli; Padovani, Carlos Roberto

doi:10.1590/s0004-27492005000400017

Cited by 3 publications

(3 citation statements)

References 5 publications

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“…Today, worldwide, the number of patients who have been formally indicated for these types of surgeries continues to be high (1,2) . Besides the feeling of loss of the eyeball, the evisceration or enucleation predisposes the individual to esthetic defects such as enophthalmos, deepening of the eyelid superior sulcus, ptosis, incomplete transference of movement to the prosthesis, reduction of the lower fornix, and flaccidity of the lower eyelid (3) . In an attempt to reduce these disappointing results, biotechnology has provided the ophthalmology with a vast array of implants and prostheses, increasingly enhanced for functional plasticity, biocompatibility, and body integration (4,5) .…”

Section: Introductionmentioning

confidence: 99%

Use of a gel biopolymer for the treatment of eviscerated eyes: experimental model in rabbits

Cordeiro-Barbosa¹,

Aguiar²,

Lira³

et al. 2012

Arq. Bras. Oftalmol.

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Purpose: To evaluate histologically the integration process of cellulose gel produced by Zoogloea sp when implanted into rabbits' eviscerated eyes. Methods: This experimental study employed 36 eyes of 18 rabbits subjected to evis ceration of their right eyes. The sclerocorneal bag was sutured and filled with biopolymer from sugar cane in the gel state. All animals were clinically examined by biomicroscopy until the day of their sacrifice which occurred on the 7 th , 30 th , 60 th , 90 th , 120 th , or 240 th day. The eyeballs obtained, including the left eyes considered controls were sent for histopathological study by optical macroscopy and microscopy. Tissue staining techniques used included hematoxylin-eosin, Masson trichrome (with aniline), Gomori trichrome, Van Gienson, Picrosirius red, and periodic acid-Schiff (PAS). Results:No clinical signs of infection, allergy, toxicity, or extrusion were observed throughout the experiment. The corneas were relatively preserved. Macroscopic examination revealed a decrease of ~ 8% in the volume of the bulbs implanted with the biopolymer. After cutting, the sclerocorneal bag was solid, compact, elastic, and resistant to traction, with a smooth and whitish surface, and showed no signs of necrosis or liquefaction. The episcleral tissues were somewhat hypertrophied. The histological preparations studied in different colors revealed an initial lymphoplasmacytic infiltration, replaced by a fibroblastic response and proliferation of histiocytes, along with formation of giant cells. Few polymorphonuclearneutrophils and eosinophils were also found. Neovascularization and collagen deposition were present in all animals starting from day 30; although on the 240 th day of the experiment the chronic inflammatory response, neovascularization and collagen deposition had not yet reached the center of the implant. Conclusion: In this model, the cellulose gel produced by Zoogloea sp proved to be biocompatible and integrated into the orbits. Morphometric, immunohistochemical and biodegradability studies should be performed in the future. Keywords

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Section: Introductionmentioning

confidence: 99%

Use of a gel biopolymer for the treatment of eviscerated eyes: experimental model in rabbits

Cordeiro-Barbosa¹,

Aguiar²,

Lira³

et al. 2012

Arq. Bras. Oftalmol.

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“…Qualitative and quantitative analysis were made using the Scion Image Program. The image processing allowed objective evaluations of the measures, contributing to the patient follow-up (27) . This was also observed in the measurements of this study, which were adequate, simple and reliable in enucleated patients.…”

Section: Discussionmentioning

confidence: 99%

“…While tracking objects, the eyes rotate only approximately 10º to 15º before head turn naturally occurs (27) . In this study, all results are higher than 15º and artificial eye motility at the central visual field can be considered acceptable for both orbital implants.…”

Section: Discussionmentioning

confidence: 99%

Artificial eye amplitudes and characteristics in enucleated socket with porous polyethylene spherical and quad-motility implant

Lucci¹,

Höfling-Lima²,

Erwenne³

et al. 2007

Arq. Bras. Oftalmol.

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Rehabilitation of atrophic anophthalmic cavity with orthostatic ocular prosthesis: A clinical report

Amaral

Cordeiro

Emídio

et al. 2016

Contact Lens and Anterior Eye

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Avaliação quantitativa das dimensões óculo-palpebrais em portadores de cavidade anoftálmica em uso de prótese ocular externa

Cited by 3 publications

References 5 publications

Use of a gel biopolymer for the treatment of eviscerated eyes: experimental model in rabbits

Use of a gel biopolymer for the treatment of eviscerated eyes: experimental model in rabbits

Artificial eye amplitudes and characteristics in enucleated socket with porous polyethylene spherical and quad-motility implant

Rehabilitation of atrophic anophthalmic cavity with orthostatic ocular prosthesis: A clinical report

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