Effects of submaximal exercise with water ingestion on intraocular pressure in healthy human males

The effects of exercise and water replacement on intraocular pressure (IOP) have not been well established. Furthermore, it is not known whether the temperature of the fluid ingested influences the IOP response. In the present study we determined the effect of water ingestion at three temperatures (10, 24 and 38ºC; 600 ml 15 min before and 240 ml 15, 30 and 45 min after the beginning of each experimental session) on the IOP of six healthy male volunteers (age = 24.0 ± 3.5 years, weight = 67.0 ± 4.8 kg, peak oxygen uptake (VO2peak) = 47.8 ± 9.1 ml kg-1 min-1). The subjects exercised until exhaustion on a cycle ergometer at a 60 percent VO2peak in a thermoneutral environment. IOP was measured before and after exercise and during recovery (15, 30 and 45 min) using the applanation tonometry method. Skin and rectal temperatures, heart rate and oxygen uptake were measured continuously. IOP was similar for the right eye and the left eye and increased post-water ingestion under both exercising and resting conditions (P<0.05) but did not differ between resting and exercising situations, or between the three water temperatures. Time to exhaustion was not affected by the different water temperatures. Rectal temperature, hydration status, heart rate, oxygen uptake, carbon dioxide extraction and lactate concentration were increased by exercise but were not affected by water temperature. We conclude that IOP was not affected by exercise and that water ingestion increased IOP as expected, regardless of water temperature

Effects of submaximal exercise with water ingestion on intraocular pressure in healthy human males.

The effects of exercise and water replacement on intraocular pressure (IOP) have not been well established. Furthermore, it is not known whether the temperature of the fluid ingested influences the IOP response. In the present study we determined the effect of water ingestion at three temperatures (10, 24 and 38 degrees C; 600 ml 15 min before and 240 ml 15, 30 and 45 min after the beginning of each experimental session) on the IOP of six healthy male volunteers (age = 24.0 +/- 3.5 years, weight = 67.0 +/- 4.8 kg, peak oxygen uptake (VO2peak) = 47.8 +/- 9.1 ml kg-1 min-1). The subjects exercised until exhaustion on a cycle ergometer at a 60% VO2peak in a thermoneutral environment. IOP was measured before and after exercise and during recovery (15, 30 and 45 min) using the applanation tonometry method. Skin and rectal temperatures, heart rate and oxygen uptake were measured continuously. IOP was similar for the right eye and the left eye and increased post-water ingestion under both exercising and resting conditions (P<0.05) but did not differ between resting and exercising situations, or between the three water temperatures. Time to exhaustion was not affected by the different water temperatures. Rectal temperature, hydration status, heart rate, oxygen uptake, carbon dioxide extraction and lactate concentration were increased by exercise but were not affected by water temperature. We conclude that IOP was not affected by exercise and that water ingestion increased IOP as expected, regardless of water temperature.

Bilateral high hyperopia after radial keratotomy.

A patient with myopia and astigmatism in the ideal range for correction by radial keratotomy had surgery on both eyes. Postoperatively, she developed bilateral high hyperopia, with a +9.00 diopter refractive error (OD) and a spherical equivalent of +8.75 diopters (OS). Her best corrected visual acuity dropped one line and hyperopia increased during the follow-up.

Argon laser photocoagulation of the pecten oculi of the domestic pigeon (Columba livia) using a specially designed contact lens.

A specially designed -62-D polymethylmethacrylate contact lens for biomicroscopy of the fundus oculi of the pigeon is presented. The study shows the usefulness of the lens in argon laser photocoagulation of the pecten, a noninvasive technique for ablating the organ. In addition, previous studies on operative destruction of the pecten are reviewed. To our knowledge, this is the first time the macroscopic appearance of a photocoagulated pecten is documented.

Fotocoagulacao com laser argonio para tratamento da recorrencia pos-operatoria do pterigio. / Photocoagulation with argon laser for the treatment of postoperative recurrence of pterygium

Tratou-se, por fotocoagulacao por laser argonio, 11 olhos que apresentavam sinais biomicroscopicos de recorrencia, 5 a 110 dias apos a cirurgia para ressecao de pterigio. Constatou-se recidiva em todos os olhos tratados. Conclui-se pela ineficacia do metodo utilizado

Consideracoes sobre a pos-graduacao em oftalmologia no Brasil. / Post-graduation in Ophthalmology in Brazil

Os autores reveem a organizacao atual da pos-graduacao na area medica do Brasil.Apresentam dados sobre os cursos de pos-graduacao em oftalmologia ligados a faculdades de medicina nos diversos Estados do Brasil e a lista de cursos credenciados na Comissao Nacional de Residencia Medica e no Conselho Brasileiro de Oftalmologia.Mostram a existencia de muitos cursos credenciados em apenas um desses dois orgaos de supervisao, asim como a existencia de cursos nao credenciados em nenhum deles.Comentam a falta de disciplinas basicas em muitos cursos, a falta de muitos equipamentos importantes e outras deficiencias em muitos cursos

Clinica de visao subnormal: experiencia inicial particularidades do atendimento no Brasil. / Clinics of subnormal vision: initial experience peculirities of the medical care in Brazil

Apresenta-se algumas caracteristicas de uma amostra de pacientes com visao subnormal atendidos no Hospital Sao Geraldo. Comenta-se a precariedade do ensino dos principios da clinica visao subnormal nos cursos de especializacao em oftalmologia e certas particularidades do atendimento no Brasil, como a elevada porcentagem de analfabetos, a falta de firmas interessadas em promover uma linha de dispositivos para VSN e o pequeno intercambio de informacoes entre os especialistas interessados no assunto