Retinal adaptation to dim light vision in spectacled caimans (Caiman crocodilus fuscus): Analysis of retinal ultrastructure.

It has been shown that mammalian retinal glial (Müller) cells act as living optical fibers that guide the light through the retinal tissue to the photoreceptor cells (Agte et al., 2011; Franze et al., 2007).

Corrigendum: Distribution of 28 kDa Calbindin-Immunopositive Neurons in the Cat Spinal Cord.

[This corrects the article on p. 166 in vol. 9, PMID: 26858610.

The ultrastructure of rabbit sclera after scleral crosslinking with riboflavin and blue light of different intensities.

Purpose: We aimed to determine the ultrastructural changes of collagen fibrils and cells in the rabbit sclera after scleral crosslinking using riboflavin and blue light of different intensities. Scleral crosslinking is known to increase scleral stiffness and may inhibit the axial elongation of progressive myopic eyes.

Methods: The equatorial parts of the sclera of one eye of six adult albino rabbits were treated with topical riboflavin solution (0.

Distribution of 28 kDa Calbindin-Immunopositive Neurons in the Cat Spinal Cord.

The distribution of vitamin D-dependent calcium-binding protein (28 kDa calbindin) was investigated in cat lumbar and sacral spinal cord segments (L1-S3). We observed specific multi-dimensional distributions over the spinal segments for small immunopositive cells in Rexed laminae II-III and medium-to-large cells of varying morphology in lamina I and laminae V-VIII. The small neurons in laminae II-III were clustered into the columns along the dorsal horn curvature.

[Development of Meynert cells in cat visual cortex under the conditions of flickering light stimulation].

To examine the effect of rhythmical light stimulation on postnatal development of the visual system, the formation of Meynert cells was studied in area 17 and posteromedial suprasylvian area (PMLS) of kittens reared under the conditions of flickering light stimulation (15 Hz frequency). Profile area of neuronal cell bodies and cytochrome oxidase (CO) activity level were measured in frontal sections of the visual cortex in control (n = 6) and stimulated (n = 6) kittens. Meynert cells located in area 17 and PMLS demonstrated an approximately 37% increase in CO activity in the stimulated animals.