The term stretto (plural: stretti) comes from the Italian past participle of stringere, and means "narrow", "tight", or "close".WordReference.

The Messina Strait Bridge : a challenge and a dream
The Major Cell Populations of the Mouse Retina
Dicer inactivation leads to progressive functional and structural degeneration of the mouse retina
Neural remodeling in retinal degeneration.
Neural remodeling in retinal degeneration. Prog Retin Eye Res
IRetinal Organization in the retinal degeneration 10 (rd10) Mutant Mouse: a Morphological and ERG Study
Synaptic connections of the narrow-field, bistratified rod amacrine cell (AII) in the rabbit retina
Morphological and functional abnormalities in the inner retina of the rd/rd mouse.
Protection of retinal ganglion cells from natural and axotomy-induced cell death in neonatal transgenic mice overexpressing bcl-2
Retinal ganglion cells survive and maintain normal dendritic morphology in a mouse model of inherited photoreceptor degeneration.