Liberação intraocular de ofloxacina associada a lente de contato biossintética em ceratite bacteriana experimental em cães

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Mensurações do bulbo ocular e cálculo do poder dióptrico de lentes intraoculares em coelhos

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Effect of polymerization and accelerated aging on iris color stability of ocular prosthesis

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Effect of weathering and thickness on the superficial microhardness of acrylic resin and ocular button

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Alteration of blue pigment in artificial iris in ocular prosthesis: Effect of paint, drying method and artificial aging

The artificial iris is the structure responsible for the dissimulation and aesthetics of ocular prosthesis. The objective of the present study was to evaluate the color stability of artificial iris of microwaveable polymerized ocular prosthesis, as a function of paint type, drying method and accelerated aging. A total of 40 discs of microwaveable polymerized acrylic resin were fabricated, and divided according to the blue paint type ( n = 5): hydrosoluble acrylic, nitrocellulose automotive, hydrosoluble gouache and oil paints. Paints where dried either at natural or at infrared light bulb method. Each specimen was constituted of one disc in colorless acrylic resin and another colored with a basic sclera pigment. Painting was performed in one surface of one of the discs. The specimens were submitted to an artificial aging chamber under ultraviolet light, during 1008 h. A reflective spectrophotometer was used to evaluate color changes. Data were evaluated by 3-way repeated-measures ANOVA and the Tukey HSD test (alpha = 0.05). All paints suffered color alteration. The oil paint presented the highest color resistance to artificial aging regardless of drying method. (C) 2010 British Contact Lens Association. Published by Elsevier Ltd. All rights reserved.

Eye color as an indicator of social rank in the fish Nile tilapia

We investigated the association of eye color with the dominant-subordinate relationship in the fish Nile tilapia, Oreochromis niloticus. Eye color pattern was also examined in relation to the intensity of attacks. We paired 20 size-matched fish (intruder: 73.69 ± 11.49 g; resident: 75.42 ± 8.83 g) and evaluated eye color and fights. These fish were isolated in individual aquaria for 10 days and then their eye color was measured 5 min before pairing (basal values). Twenty minutes after pairing, eye color and fights were quantified for 10 min. Clear establishment of social hierarchy was observed in 7 of 10 pairs of fish. Number of attacks ranged from 1 to 168 among pairs. The quartile was calculated for these data and the pairs were then divided into two classes: low-attack (1 to 111 attacks - 2 lower quartiles) or high-attack (112 to 168 attacks - 2 higher quartiles). Dominance decreased the eye-darkening patterns of the fish after pairing, while subordinance increased darkening compared to dominance. Subordinate fish in low-attack confrontations presented a darker eye compared to dominant fish and to the basal condition. We also observed a paler eye pattern in dominants that shared low-attack interactions after pairing compared to the subordinates and within the group. However, we found no differences in the darkening pattern between dominants and subordinates from the high-attack groups. We conclude that eye color is associated with social rank in this species. Moreover, the association between eye color and social rank in the low-attack pairs may function to reduce aggression.

Perfil dos alunos usuários de lentes de contato do curso de Medicina da Universidade Estadual Paulista - UNESP - Botucatu

OBJETIVO: Analisar o perfil dos usuários de lentes de contato entre os estudantes de medicina da Faculdade de Medicina de Botucatu da Universidade Estadual Paulista - UNESP - Botucatu (SP), quanto à ametropia, à aquisição, aos cuidados e às complicações. MÉTODOS: Foi aplicado um questionário aos alunos do 1º ao 6º ano de Medicina da Faculdade de Medicina de Botucatu da Universidade Estadual Paulista - UNESP - Botucatu (SP), perfazendo um estudo analítico transversal. RESULTADOS: Foram 566 entrevistados. Destes, 155 (27,4%) usavam lente de contato. Das lentes de contato usadas, 94,8% eram gelatinosas, e em 98,7% o grau era negativo. O descarte dessas lentes era mensal em 46,9% dos entrevistados e 63,9% a utilizavam, em média, 14 horas/dia. Faziam aquisição da lente de contato em óptica ou farmácia 14,1% dos estudantes. Faziam a higiene ao colocá-las e ao retirá-las dos olhos, 46,5%. As complicações referentes aos olhos vermelhos eram 51,0%; 44,5%, embaçamento; e 42,6%, sensação de corpo estranho, além de 4 estudantes relatarem ceratite. CONCLUSÕES: A maioria dos alunos utilizava lentes hidrofílicas, descarte mensal e grau negativo. A adaptação inadequada, aquisição de lentes de contato em ópticas ou farmácias e complicações graves ocorreram, mesmo nos usuários socioculturalmente considerados diferenciados. em vista disso, demanda a extrema necessidade de maior atenção na abordagem do tema em questão, a fim de prevenir o comprometimento visual permanente.

Ultrasonographic analysis of senile cataractous lens of dogs and its correlation to phacoemulsification

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Contribution of ocular B-mode and triplex Doppler in the evaluation of 10 Poodle dogs with cataracts

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Ultra-sonografia bidimensional em tempo real do bulbo ocular de cães (Canis familiaris, Linnaeus, 1758) com opacificação de meios transparentes. Emprego do transdutor mecânico setorial de 7,5 MHz com almofada de recuo

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Elementary particles under the lens of the black holes

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Thermal-optical properties of Ga : La : S glasses measured by thermal lens technique

In this work the quantitative theoretical treatment for two beam mode mismatched thermal lens spectrometry is applied to investigate the thermo-optical properties of chalcohalide (chalcolgenides and halides mixture) glasses. For the three kinds of glass studied the thermal diffusivity varied between 2.5 and 2.7 x 10(-3) cm(2) s(-1). Using these results and supposing Dulong-Petit specific heats we estimated the thermal conductivity and temperature ratio of optical path length (ds/dT) and temperature coefficient of refractive index (dn/dT). All samples had positive ds/dT(similar to 3.3 x 10(-6) K-1) and negative dn/dT (similar to -26 x 10(-6) K-1). The difference between these parameters and the change of signal are consequences of the expansion coefficient (13 x 10(-6) K-1) and refractive index (n similar to 2.6) of chalcohalides. (C) 1999 Elsevier B.V. B.V. All rights reserved.

ALTERATIONS IN THE OMMATIDIA OF THE COMPOUND EYES OF APIS-MELLIFERA EYE-COLOR MUTANT WORKERS .3.

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

ISOLATION AND IN-VITRO HYDROLYSIS OF GLOBULIN G1 FROM LENTILS (LENS-CULINARIS, MEDIK)

The major globulin fraction from lentil seeds was investigated with respect td in vitro hydrolysis by trypsin and chymotrypsin. Globulin was isolated by a NaCl-ascorbate extraction procedure and purified by DEAE-cellulose chromatography and gelfiltration chromatography on Sepharose CL-6B. The purity and identification of the protein were performed by PAGE. The native globulin, with a molecular weight of 375 kD, was resolved by SDS-PAGE into twelve polypeptides with molecular weights ranging from 61 to 14.5 kD. Native and heated globulin GI was hydrolyzed with trypsin and chymotrypsin. SDS-PAGE indicated that native globulin was more resistant to digestion than heated protein. Amino acid analysis of the major globulin revealed that glutamic acid was present in the largest concentration, followed by aspartic acid, arginine and leucine. As is also the case for other legumin-like globulins, lentil GI was deficient in sulfur-containing amino acids.