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Retinitis pigmentosa (RP) is the most prevalent form of hereditary retinal dystrophy. Typically, the disease is bilateral and symmetrical. Cases of unilateral RP are very rare and only isolated cases or short series have been reported. We present two cases of unilateral RP. In the first, a 38-year-old woman was diagnosed with unilateral RP in the left eye, and followed up for 10 years. In the second, we describe a 64-year-old male with unilateral RP complicated with cystoid macular edema in the right eye, from the time of diagnosis, followed up for 6 years.

introduction: Congenital simple hamartoma of the retinal pigment epithelium (CSHRPE) is a benign, unilateral and solitary tumor, which is usually located near the macula adjacent to the fovea; it remains unchanged throughout life. clinical case: A 62-year-old patient diagnosed based on clinic findings and by optical coherence tomography (OCT) of a (CSHRPE) discovered in a routine ophthalmological examination. It remained unchanged in subsequent examinations. Discussion: A correct differential diagnosis of the lesion must be made with other malignant lesions, as well as a correct follow-up for the detection of possible complications, including exudation and retinal contraction. conclusion: Differential diagnosis of CSHRPE with other types of tumors is very important, and for this OCT is a very helpful diagnostic tool.

La integridad de la superficie ocular en las úlceras corneales: a propósito de 3 casos Resumen Las úlceras corneales infecciosas constituyen un importante problema de salud pública. Un tratamiento precoz de la infección y un correcto control en un segundo tiempo de la inflamación así como del componente neurotróficotóxico iatrogénico, aumenta la probabilidad de un mejor resultado visual final. Presentamos una serie de casos clínicos de úlceras corneales documentadas fotográficamente, en las que se evidencia su agresividad al diagnóstico y sus secuelas, así como la descripción de su tratamiento en cada caso.