Seiya Maehara
Rakuno Gakuen University
ErgAnatomyOphthalmologyInternal medicineBiomedical engineeringSurgeryPathologyStimulus (physiology)Composite materialFundus (eye)Materials scienceDioptreChoroidBeagleRetinaMeibomian glandFluoresceinVisual acuityPremedicationGlaucomaEvoked potentialElectroretinographyCataractsAngiographyRetinalIndocyanine greenEyelidImplantCoatingSevofluraneInhalation anesthesiaLight sourceStimulus patternRetinal functionSignificant differenceVisual evoked potentialsTimolol maleatePattern stimulationContact lens electrodeMathematicsAnesthesiaMedicineDose–response relationshipBlood pressureBiology
34Publications
8H-index
181Citations
Publications 34
Newest
#1Misato Nakamura (Rakuno Gakuen University)
#2Marin Matsushiro (Rakuno Gakuen University)
Last. Takanori Kooriyama (Rakuno Gakuen University)H-Index: 6
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Pinnipeds have evolved enlarged ocular bulbs to catch fish in the dark. However, their large protruding eyes are easily damaged, which increases the risk of blindness and death in these animals. In captivity, ophthalmic disorders, manifested as keratitis and cataracts, are common among pinnipeds. In this study, we investigated symptoms of ophthalmic disorders in pinniped species using a questionnaire distributed to 32 zoos and aquariums throughout Japan. We conducted this study in cooperation wi...
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#1Seiya Maehara (Rakuno Gakuen University)H-Index: 8
#2Yoshiki Itoh (Okayama University of Science)H-Index: 2
Last. Arisa Masuko (Rakuno Gakuen University)H-Index: 1
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: The purpose of this study was to investigate the effects of pupil diameter on canine visual evoked potentials with pattern stimulation (P-VEP). Atropine eye drop (1.0%) was applied to both eyes as a cycloplegic drug, and tafluprost eye drop (0.015%) was applied to one eye that was selected randomly for miosis (miosis group). The other eye did not receive tafluprost (mydriasis group). P-VEP was recorded at three pattern sizes. The P100 implicit time at a small pattern size in the mydriasis grou...
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#1Seiya Maehara (Rakuno Gakuen University)H-Index: 8
Last. Arisa Masuko (Rakuno Gakuen University)H-Index: 1
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A twenty-year-old male Asiatic black bear (Ursus thibetanus) presented at the Rakuno Gakuen University Animal Medical Center with a 10-year history of bilateral blindness and cataracts. Surgical treatment of bilateral cataracts by extracapsular lensextraction using phacoemulsification and aspiration (PEA) was performed under general anesthesia. An anterior capsulectomy was performed using micro iris scissors and micro anterior lens capsule forceps. The cataract was removed with PEA using the two...
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#1Yasunari Kitamura (Rakuno Gakuen University)H-Index: 3
#2Seiya Maehara (Rakuno Gakuen University)H-Index: 8
Last. Akihiko Saito (Rakuno Gakuen University)H-Index: 4
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OBJECTIVE: To investigate meibomian gland (MG) morphology by noncontact infrared meibography in Shih Tzu dogs with or without keratoconjunctivitis sicca (KCS). PROCEDURES: Fourteen eyes of 12 Shih Tzu dogs (mean age of 10.7 years, range of 7-13 years) presented to Yakumo Animal Hospital or Triangle Animal Eye Clinic from 2011 to 2017 with clinical signs and a Schirmer tear test (STT) result consistent with KCS ( 15 mm/min served as healthy controls. Both groups of dogs underwent routine slitlamp...
3 CitationsSource
#1Akira KuboH-Index: 3
#2Yosuke ItoH-Index: 4
Last. Tetsuya NakadeH-Index: 13
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#1Yuto Sano (Rakuno Gakuen University)H-Index: 3
#2Mai Miyazaki (Rakuno Gakuen University)
Last. Kazuya Matsuda (Rakuno Gakuen University)H-Index: 11
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: An 8-year-old castrated Toy poodle presented with swelling and proptosis of the right third eyelid caused by an exophytic mass on the bulbar surface. Histologically, the mass was composed of stratified neoplastic basaloid cells, arranged in nests and interconnecting islands, which were mixed with tubular structures. Immunohistochemically, the basaloid cells were positive for p63 and cytokeratin (CK) 14, and the inner epithelial cells of the tubular structures were positive for CK7, CK8, and CK...
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#1Seiya Maehara (Rakuno Gakuen University)H-Index: 8
#2Yoshiki Itoh (Okayama University of Science)H-Index: 2
Last. Arisa Masuko (Rakuno Gakuen University)H-Index: 1
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: We tried measurement of visual acuity in laboratory beagle using pattern stimulus visual evoked potential (P-VEP). We recorded P-VEP in 6 beagles which were corrected refractive power. The stimulus pattern size was 1.22 mm. The testing distance were 0.5, 1.0, and 2.0 m. The visual angles and spatial frequency were calculated from stimulus pattern size and distance. In all subjects, P-VEP was clearly recorded in all testing distance, and this result means that the eye could recognized grid patt...
1 CitationsSource
#1Yuto Sano (Rakuno Gakuen University)H-Index: 3
#2Minoru Okamoto (Rakuno Gakuen University)H-Index: 18
Last. Kazuya Matsuda (Rakuno Gakuen University)H-Index: 11
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: Intraocular cholesterol granuloma (CG) associated with synchysis scintillans (SS) was diagnosed in a 5-year-old spayed Shetland sheepdog. During the initial clinical examination, the patient exhibited SS in the anterior chamber. Canine SS is usually found in the vitreous cavity, and SS in the anterior chamber has not been described. Since canine SS has been reported to be a non-progressive condition, and its long-term clinical course has not been adequately documented. The present case report ...
1 CitationsSource
#1Miri Hayashi (Rakuno Gakuen University)H-Index: 4
#2Seiya Maehara (Rakuno Gakuen University)H-Index: 8
Last. Tetsuya Nakade (Rakuno Gakuen University)H-Index: 13
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Objective To study a new approach to indocyanine green (ICG) angiography for contrasting the ocular fundus in cats. Animals studied Six healthy laboratory cats. Procedures Fluorescein (FLUO) and ICG angiography were performed using an infrared-sensitive charged coupled device-equipped fundus camera on sedated cats. Results At 12.3 ± 3.4 s after ICG administration, the choroidal arteries could be seen extending radially from the optic disk. The choroidal veins became apparent at 16.2 ± 4.1 s alon...
2 CitationsSource