Biomedical subjects

C Calvo-González

Publications and source records attributed to C Calvo-González.

5 recordsLinked to original sources

PubMed2006

[Amaurosis secondary to frontal traumatism].

CASE REPORT: We present the case of a patient diagnosed with amaurosis of the right eye secondary to a right frontal contusion. The energy of the impact was projected from the orbital ceiling to the minor wing of the sphenoid bone. This bone was fractured, thus reducing the optic canal diameter and damaging the optic nerve. DISCUSSION: In our case, we describe a mixed mechanism of injury, that is to say, a frontal contusion indirectly transmitted to the optic canal and a direct lesion of the optic nerve secondary to the movement of the minor wing of the sphenoid bone into the optic canal.

Aged↗

PubMed2006

[Eyelid tick bite].

CASE REPORT: We describe a patient who was bitten on his right upper eyelid by a common canine tick. The tick was impregnated with gasoline prior to being removed. DISCUSSION: Tick bites are uncommon in ophthalmologic practice. They occur more frequently in rural areas, especially in spring and summer. Correct identification of the problem and treatment is essential. The tick needs to be completely removed in order to avoid the embedding of different parts of the insect. Zoonoses, such as rickettsiosis, arbovirus and paralysis due to ticks must be ruled out.

Adult↗

PubMed2006

[Optic nerve drusen and deep visual fields defects].

PURPOSE: Optic nerve drusen needs to be included in the differential diagnosis of pseudopapilledema. As the identification of this entity by funduscopy may be difficult, ultrasonography has thus become the gold standard for its diagnosis. Severe optic nerve drusen has been correlated with a reduction of the nerve fiber layer measured by optic coherence tomography and with the presence of serious visual field defects. To demonstrate the relationship between extensive optic nerve drusen and visual field defects. METHOD: A prospective observational study of the visual fields of a series of 5 patients with severe optic nerve drusen diagnosed by ultrasonography. RESULTS: Visual field defects of widely differing severity, from inferior nasal quadrant to severe hemivisual field defects, were described in each patient studied. CONCLUSIONS: Visual field defects of diverse severity are common in patients with deep optic nerve drusen. For that reason ultrasonography and/or optical coherence tomography is highly recommended where such visual field defects exist.

Adult↗

PubMed2006

[Optical coherence tomography in solar eclipse retinopathy].

CASE REPORT: We describe the case of a patient suffering from acute visual loss soon after watching a solar eclipse. Optical coherence tomography was the main diagnostic tool used. DISCUSSION: Solar retinopathy is now an unusual cause of visual loss, although there are still some cases diagnosed, especially after viewing solar eclipses. Optical coherence tomography is suitable for detecting permanent retinal injuries related to solar exposure, with the outer retinal layers being typically affected.

Adult↗

PubMed2005

[Ocular infiltration in a patient with Multiple Myeloma].

CASE REPORT: We report the case of a patient with Multiple Myeloma Ig G Kappa stage IIIA and hepatic infiltration, who presented with ocular infiltration. The initial sign was a rapidly growing sub-conjunctival mass that caused ophthalmoplegia and increased intraocular pressure secondary to progressive infiltration of the orbit. DISCUSSION: Multiple Myeloma is a malignant tumor of plasma cells that can affect the eye and orbit, not only as an infiltration secondary to the disease but also primary as an isolated tissue proliferation (extramedullary plasmacytoma). Chemotherapy is the usual treatment given. Radiotherapy with or without excisional surgery is the first option for plasmacytomas.

Antineoplastic Agents↗