PURPOSE After cataract surgery, the ability to accommodate is lost. For this reason, a mechatronic IOL is being developed at the moment: The Artificial Accommodation System. This device requires an easily measureable indicator of the distance of the observed object to determine the demand of accommodation. As the pupil constricts with near vision, pupil size might be such an indicator. Our rese...

PURPOSE To evaluate the relationship between high-order aberrations and refractive errors, and between high-order aberrations and age. METHODS An analytic retrospective study of patients that underwent aberrometry examination was conducted. All subjects examined with LadarWave aberrometer at the Hospital de Olhos do Paraná from April 2004 to April 2005 were included in this study. The major i...

Purpose: To investigate the effects of intravitreal injection of cyclopentolate on form deprivation myopia in guinea pigs. Methods: Thirty-five guinea pigs at age of 3 weeks were randomly divided into 5 groups (n = 7 for each group): deprived, deprived plus saline, deprived plus cyclopentolate, normal control, and cyclopentolate group. Form deprivation was only performed in right eyes with tran...

Purpose: To evaluate. long term efficacy, safety and stability of PRK for low and moderate myopia. Methods: 110 patients were treated for myopia up to 6D with the Summit Excimed excimer laser. The optical zone was 5mm in all cases. Manifest t&action. refraction under cycloplegla, comenl haze and comeal topography werc studied at D15, 1. 3, 6. 12. and 24 months after the surgery. Results: 110 pa...

The Manchineel tree is an evergreen widely distributed in tropical regions. The toxic nature of Manchineel has been known since the early sixteenth century. Contact with its milky sap (latex) produces bullous dermatitis and acute keratoconjunctivitis. We identified 19 patients who had ocular injuries caused by Manchineel between 1985 and 1990 and were able to review 12. All of these patients ha...

Purpose. To describe a case of dengue fever-associated maculopathy and panuveitis to raise awareness of these ophthalmic complications of dengue in Australia in the light of recent increasing numbers of outbreaks from equatorial through to tropical Australia. Case Report. A 37-year-old Caucasian Australian male returning from Cambodia presented with a bilateral dengue fever-associated maculopat...

OBJECTIVES The aim of this study was to identify the causes of visual impairment in children attending schools for students with visual impairment and to identify children suitable for treatment and rehabilitation. MATERIALS AND METHODS All students were examined in our department by a pediatric ophthalmologist and an ophthalmologist experienced in low vision and visual rehabilitation. The ch...

AIMS To estimate the heritability for ocular refraction and its determiners in a population based cohort of 20-45 years old twins. METHODS 114 twin pairs (53 monozygotic and 61 dizygotic) participated. Refraction was determined in cycloplegia and eye dimensions were measured with ultrasound. Educational length was assessed. The heritability was estimated employing aetiological model fitting. ...

PURPOSE To study the relationship between exophthalmometric value (EV) and refractive error in Cameroonian young adults. PATIENTS AND METHODS A prospective descriptive study was carried out in the ophthalmic unit of the Yaoundé Central Hospital from March to May 2015. Consenting patients aged 20-40 years with no intraocular pathology who were seen for refractive errors were included. Ocular p...