The main goal, in eyelid reconstruction, is to promote an adequate protection to the ocular globe, through the reconstitution of all anatomic plans. In order to obtain adequate stability, cartilage grafts are often used in the repair of the internal lamella. Cartilage grafts from auricular scapha in contact with the bulbar conjunctiva were used in this study. Nineteen patients with various pathologies had 20 eyelid reconstructions using this technique (10 cutaneous tumors, 7 post-traumatic, and 3 cases of lower eyelid retraction). Local cutaneous flaps (glabella, Mustard, etc) were used to reconstruct the external lamella. Epithelialization on the perichondrium (confirmed by the histological examination) occurs between 3 to 4 weeks. The functional and aesthetic result was considered good in 14 cases (70%), acceptable in 5 (25%) and poor in one case (5%). The donor area showed no complications or deformities. The shape of the scapha allows satisfactory conformation of the graft to the curvature of the ocular globe; it is not flat like the nasal septum, and has a smoother curvature than the auricular concha. Furthermore, it is thinner and that is another reason why the aesthetic result was superior to the technique previously used. The functional results were similar.
Land planarians (Platyhelminthes) are likely important components of the soil cryptofauna, although relevant aspects of their ecology such as their density remain largely unstudied. We investigated absolute and relative densities of flatworms in three patches of secondary Brazilian Atlantic rainforest in an urban environment. Two methods of sampling were carried out, one consisting of 90 hours of active search in delimited plots covering 6,000 m² over a year, and the other consisting of leaf litter extraction from a 60 m² soil area, totaling 480-600 l leaf litter. We found 288 specimens of 16 species belonging to the genera Geobia, Geoplana, Issoca, Luteostriata, Obama, Paraba, Pasipha, Rhynchodemus, Xerapoa, and the exotic species Bipalium kewense and Dolichoplana striata. Specimens up to 10 mm long were mostly sampled only with the leaf litter extraction method. Absolute densities, calculated from data obtained with leaf litter extraction, ranged between 1.25 and 2.10 individuals m-². These values are 30 to 161 times higher than relative densities, calculated from data obtained by active search. Since most common sampling method used in land planarian studies on species composition and faunal inventories is active search for a few hours in a locality, our results suggest that small species might be overlooked. It remains to be tested whether similar densities of this cryptofauna are also found in primary forests.
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