PURPOSE: This is to study the progressive addition lens (PAL) under the physiological optics’ view, to show the lensometer findings and its applicability to daily work. METHODS: At first, the aa., explains the ways to examine the PAL , and then indicates the physical basis applied to study the prismatic system of the concave and convex lens. It then examines the differences on progression zone extension and explains its diagonal position. Thirteen pairs of lenses from the same manufacturer were […]

OBJECTIVE: To show visual and refraction results using multifocal diffractive apodized intraocular lens. METHODS: The study of 100 eyes of 50 patients with cataract, submitted to phacoemulsification with bilateral implant of multifocal diffractive apodized intraocular lens (IOL). Binocular visual acuity was evaluated with and without correction for near and distance, and refraction previsibility and frequency of wearing glasses. RESULTS: Visual acuity without correction for distance was e” 20/30 in 97.56% of eyes operated on and e” J2 in 100%, of […]

This article reports a case of a female child, nine-years old, with a history of proptosis and progressive decrease of visual acuity. At ophthalmologic exam presented: best corrected visual acuity 20/20 on the right eye and light perception on the left eye; biomicroscopic exam was normal, weakness of left superior rectus and left inferior oblique muscle, exotropia and hypotropia to the left. At indirect ophthalmoscopy exam, fundus was normal on the right eye and had left optic disc with edema. […]

PURPOSE: to determine the prevalence of astigmatism and the change of the axis according to the age in an ophthalmology private clinic population in the city of Florianópolis, Santa Catarina, Brazil. METHODS: A retrospective, descriptive, cross-sectional study was carried out based on the analyses of medical files. Astigmatism was classified as a cylindrical equivalent <-0,5 diopter (D). Astigmatism with the rule was defined as 160° to 20° , oblique astigmatism as 21° to 69° and 111° to 159° , and […]

OBJECTIVES: To describe and analyze the prevalence of refractive errors among first-graders in state schools of Passo Fundo, main city of the northeast region of Rio Grande do Sul State. METHODS: Cross-sectional study of 1608 first-graders in 26 elementary state schools of Passo Fundo, evaluated in 2004. The data were collected by the CEAE (Specialized Center for Student Assistance), which was in charge of the screening at the schools, and by the specialized service, to which those students with abnormal […]

PURPOSE: Ocular health promotion activities are increasingly performed by medical institutions in order to provide assistance for patients in need and to promote blindness prevention. To meet these aims, it is necessary to organize the activity considering all the staff and equipment involved, and the logistic in the process. The present study analyses three ophthalmological programs to identify the factors related to a successful social program. METHODS: Observational descriptive study including three ocular health campaigns carried out in 2005. RESULTS: […]

Report of a case of posterior persistent hyperplastic primary vitreous (PHPV) case on a nine years old patient with low visual acuity on the left eye, referred by the school for ophthalmic evaluation. The PHPV can embrace a wide spectrum of ocular alterations involving retina, vitreous, optic nerve, macula, crystalline, iris and ciliary body besides anomalies like mycroftalmia and microcornea. We point out the importance of early ocular evaluation in children, late diagnosis and late treatment, in order to minimize […]

PURPOSE: To present biometric predictability, evaluating postoperative refraction and visual acuity in eyes submitted to multifocal intraocular lens implantation. METHODS: Retrospective study in 88 eyes of 50 patients, submitted to phacoemulsification with multifocal lens implant of three commercial brands: ReSTOR, ReZoom and Tecnis. For biometric examination were used: optic biometry associated to the use of tomography of anterior segment and Holladay II biometric formula. With postoperative refraction, visual acuity and implanted IOL, according to Holladay II formula, we calculated the […]