Parapapillary atrophy: histological gamma zone and delta zone.

Background: To examine histomorphometrically the parapapillary region in human eyes.

Methodology/principal Findings: The histomorphometric study included 65 human globes (axial length:21-37 mm). On anterior-posterior histological sections, we measured the distance Bruch's membrane end (BME)-optic nerve margin ("Gamma zone"), BME-retinal pigment epithelium (RPE) ("Beta zone"), BME-beginning of non-occluded choriocapillaris, and BME-beginning of photoreceptor layer.

Untreated 'blow-in' fracture of the orbital floor causing a mucocele: report of an unusual late complication.

Background: Several severe complications have been described with blow-in fractures. Therefore, immediate surgical treatment of these fractures has been recommended. To date, there is only minimal knowledge on long-term complications of blow-in fractures that have remained untreated.