[Prevalence of pterygium in Botucatu city - São Paulo State, Brazil].

Purpose: To evaluate the prevalence of pterygium in a population-based sample at Botucatu City - São Paulo State, Brazil.

Methods: A population-based cross-sectional study with randomized clustered sampling of households was conducted in the urban area of the Botucatu City - São Paulo State, Brazil and 85.1% of the intended sample was evaluated.

[Eyelid ectropion in Down's syndrome related to allergic conjunctivitis: case report].

This is a case report of a patient with Down's syndrome with an important mechanical ectropion and elongation of the lower lid related to chronic allergic conjunctivitis, besides cataract and keratoconus. The tarsal strip technique and resection of redundant and thick conjunctiva was the surgical approach chosen for this case. Functional and cosmetic outcomes were considered satisfactory.

Lack of papillomavirus (HPV) in pterygia of a Brazilian sample.

Purpose: Because the influence of papillomavirus (HPV) in pterygium pathogenesis is controversial, the aim of this study was to identify whether it is present in the pterygia lesions in our region.

Methods: Thirty-six patients with unilateral primary pterygia were submitted to excision of pterygia and a sample of normal conjunctiva. Tissues were submitted to polymerase chain reaction (PCR) evaluation for papillomavirus DNA detection.

[Orbital fat evaluation after enucleation and evisceration in rabbits].

Purpose: To evaluate rabbit adipocytes of the orbital fat tissue after enucleation and evisceration.

Methods: Twenty-tree specimens from 23 rabbits aged 42 days which had undergone socket surgery (evisceration and enucleation) were evaluated. The animals were sacrificed on the 30th, 90th and 180th postoperative day.

[Rabbit orbital measure evaluations after enucleation and evisceration].

Purpose: To assess orbital volume in weaned rabbits, submitted to enucleation and evisceration, with orbital volume reconstitution using porous polyethylene (PP) spheres, analyzed by computed tomography, by the water displacement test and external orbital measures using Image-J software.

Methods: This experimental randomized study consisted of 48 albino rabbits, with 42 days of life, submitted to enucleation (EN) and evisceration (EV), with (WI) or without (NI) implantation of a 10 mm PP sphere. After 1 month (M1), 3 months (M2) and 6 months (M3), 4 animals of each group were sacrificed.