Results for the STT reported here compare favorably with reported values, except for results of Shetland Sheepdogs; however, results for the STTa differ dramatically from reported values. Clinicians should consider effects attributable to breed when evaluating results of STT and STTa in dogs.

The characteristics of 463 cases of Überreiter's Syndrome are presented. Over 80% of the diagnoses were made in German Shepherds. A treatment regimen utilizing combinations of corticosteroids, irradiation, superficial keratectomy and partial penetrating keratoplasty is outlined. An hypothesis that ultraviolet radiation is involved in the pathogenesis of this syndrome is proposed for further testing.

Summary Twenty‐six horses and five mules with periocular sarcoids were treated with intralesional injections of a purified bacillus of Calmette and Guerin (BCG) cell walls in oil suspension. All sarcoids were cured and the horses and mules remained free from recurrence of sarcoid during the two‐year follow‐up period.

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Abstract. The histologic features of retinal dysplasia were studied in 26 English springer spaniel dogs of one day to four years of age. Dysplastic lesions in neonatal pups occurred predominantly in the peripapillary tapetal area of sensory retina. They consisted of complex linear folds and rosettes which were composed of hyperplastic neuroblasts. Dysplasia usually was not associated with incomplete differentiation of the outer neuroblastic layer. The outer limiting membrane was absent locally and numerous patent subretinal capillaries existed in the region of folds. The dysplastic features ma:y be related to aberrant development of Muller cells and of retinal capillaries.In adolescent dogs, dysplastic lesions were less complex and usually were not accompanied by aberrant capillaries. Focal or complete retinal separation was present in some adolescent dogs. In adult dogs, features of retinal atrophy were found within dysplastic areas. No significant histologic lesions were found in the extraocular tissues of 12 affected dogs which were surveyed extensively.Retinal dysplasia has been defined as anomalous differentiation of the retina [43]. It may occur either with [34] [7,[36][37][38]. A similar syndrome of multiple intraocular anomalies, including chorioretinal dysplasia, occurs in the Australian shepherd [ 17, 18, 521. The morphology of canine retinal clysplasia has been studied in the Labrador retriever [24] and in the beagle [56].A clinical description of retinal dysplasia in the English springer spaniel breed included the histologic-features of one dog [28]. This report presents morphologic features of the dysplastic retina in English springer spaniels at various postnatal ages.