Electrical activity of the orbicularis muscles before and after installation of ocular prostheses

Goiato, Marcelo Coelho; Santos, Murillo Rezende; Monteiro, Bcz; Moreno, Amália; Bannwart, Lisiane Cristina; Filho, Aljomar José Vechiato; Guiotti, Aimée Maria; Haddad, Marcela Filié; Pesqueira, Aldiéris Alves

doi:10.1016/j.ijom.2014.09.021

Cited by 9 publications

(14 citation statements)

References 20 publications

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“…Improve the natural appearance by preserving the anatomical shape of the cavity and its mobility. This last factor is the most important one to conceal the ocular prosthesis, as in conversations with prostheses users, the appliances should not remain static but must have movement, even if it is minimal (6,7,8) .…”

Section: Discussionmentioning

confidence: 99%

“…Keep the anophthalmic cavity filled, restore the lacrimal direction (it enables tear drainage) and prevent the accumulation of lacrimal fluid in the cavity (8) .…”

Section: Discussionmentioning

confidence: 99%

“…Inhibit the collapse of the eyelids (8) 5. Maintain muscle tone (8) 6. Protect the cavity (8) The longer the time interval between enucleation and prosthesis installation, the harder it will be for the patient to adapt, due to the atrophy of eyelids and muscle hypofunction (8) .…”

Section: Discussionmentioning

confidence: 99%

“…Maintain muscle tone (8) 6. Protect the cavity (8) The longer the time interval between enucleation and prosthesis installation, the harder it will be for the patient to adapt, due to the atrophy of eyelids and muscle hypofunction (8) . Therefore, besides focusing on volume asymmetry, the professional must address the condition of periocular structures by evaluating eyelids, eyebrows, forehead, midface and ears.…”

Section: Discussionmentioning

confidence: 99%

“…Reproducing the patient's expression, character and personality present in the contralateral eye is almost impossible (5) . However, despite these difficulties and the fact that they do not restore vision, ocular prostheses remain a very good choice for the rehabilitation of anophthalmic patients, as they allow patients to recover their aesthetic appearance (7,8) .…”

Section: Discussionmentioning

confidence: 99%

See 4 more Smart Citations

Anoftalmia congénita. Reporte de una serie familiar

Muñoz¹,

Saldías²,

Climent³

et al. 2017

Odontoestomatología

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Anophthalmia is the absence of an eye. This may be unilateral or bilateral and its prevalence is low. It results from developmental arrest of the globe during organogenesis. Three patients aged 22, 23 and 25, sisters, have congenital unilateral right-sided, bilateral and unilateral left-sided anophthalmia respectively. The only family history element is that their paternal great-grandfather also suffered from congenital unilateral right-sided anophthalmia. They were sent from the Regional Clinical Hospital to the Clinic of Trauma and Maxillofacial Prosthetics at Universidad de Concepción to be treated from their first months of life. The treatment included the use of sequential conformers to expand the eye sockets, and then individual ocular prostheses were prepared and installed. The rehabilitation of congenital anophthalmia is a major challenge. Early intervention, as was the case with these patients, makes a significant difference on the overall development of the patient and on the emotional well-being of the family.

show abstract

Section: Discussionmentioning

confidence: 99%

“…Keep the anophthalmic cavity filled, restore the lacrimal direction (it enables tear drainage) and prevent the accumulation of lacrimal fluid in the cavity (8) .…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 3 more Smart Citations

Anoftalmia congénita. Reporte de una serie familiar

Muñoz¹,

Saldías²,

Climent³

et al. 2017

Odontoestomatología

View full text Add to dashboard Cite

show abstract

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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Trigeminal brainstem modulation of persistent orbicularis oculi muscle activity in a rat model of dry eye

et al. 2017

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Altered corneal reflex activity is a common feature of dry eye disease (DE). Trigeminal sensory nerves supply the ocular surface and terminate at the trigeminal interpolaris/caudalis (ViVc) transition and spinomedullary (VcC1) regions. Although both regions contribute to corneal reflexes, their role under dry eye conditions is not well defined. This study assessed the influence of local inhibitory and excitatory amino acid neurotransmission at the ViVc transition and VcC1 regions on hypertonic saline (HS) evoked orbicularis oculi muscle activity (OOemg) in urethane-anesthetized male rats after exorbital gland removal (DE). HS increased the magnitude of long duration OOemg activity (OOemgL, >200 ms) in DE compared to sham rats, while short duration OOemg activity (OOemgS, <200 ms) was similar for both groups. Inhibition of the ViVc transition by muscimol, a GABAA receptor agonist, greatly reduced HS-evoked OOemgL activity in DE rats, whereas injections at the VcC1 region had only minor effects in both groups. Blockade of GABAA receptors by bicuculline methiodide at the ViVc transition or VcC1 region increased HS-evoked OOemgL activity in DE rats. Blockade of N-methyl-D-aspartate (NMDA) receptors at either region reduced HS-evoked OOemgL activity in DE and sham rats. GABAαβ3 receptor density was reduced at the ViVc transition, while NMDA receptor density was increased at both regions in DE rats. Loss of GABAergic inhibition at the ViVc transition coupled with enhanced NMDA excitatory amino acid neurotransmission at the ViVc transition and the VcC1 region likely contribute to altered corneal reflexes under dry eye conditions.

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Electrical activity of the orbicularis muscles before and after installation of ocular prostheses

Cited by 9 publications

References 20 publications

Anoftalmia congénita. Reporte de una serie familiar

Anoftalmia congénita. Reporte de una serie familiar

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

Trigeminal brainstem modulation of persistent orbicularis oculi muscle activity in a rat model of dry eye

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