Albedo concentration in the anterior eye: a phenomenon that locates some solar diseases.

I describe concentrations of reflected solar radiation (albedo) found at the usual sites of various conditions associated with exposure to the sun--pterygium, pinguecula, climatic droplet keratopathy and cataract and eyelid malignancy. Since the degree of limbal albedo concentration appears to be related to corneal curvature, patients at risk can be identified by a simple test and preventative measures taken.

Effect of hypotonic media on the membrane voltage of cultured bovine corneal endothelial cells.

The effects of hypotonicity on cultured bovine corneal endothelial cells were investigated using standard microelectrode and superfusion techniques. Confluent monolayers of cells were superfused with an isotonic (305 +/- 5 mosm/kg) control solution until a stable membrane voltage (V) was obtained, then with a hypotonic (240 +/- 5 mosm/kg) solution. Under control conditions, V was - 51.

Continuous membrane voltage recordings in A10 vascular smooth muscle cells: effect of AVP.

Continuous membrane voltage (V) recordings were obtained in A10 vascular smooth muscle cells (rat aorta) using glass microelectrodes. Resting membrane voltage in 262 impalements averaged 54.0 +/- 0.

Effect of acetylcholine on membrane potential of cultured human nonpigmented ciliary epithelial cells.

Human nonpigmented ciliary epithelial cells (NPE) were grown in tissue culture after transformation with an origin-defective mutant of SV-40 DNA. In these cells membrane potentials (V) were measured using the microelectrode technique. Addition of 10(-4) M acetylcholine led to a bisphasic voltage response.

Scleral reinforcement in the treatment of pathologic myopia.

Pathologic myopia is a relatively common blinding condition for which current treatment is limited and controversial. Macular changes and vision loss proceed from the development of a posterior staphyloma. A scleral reinforcement technique has been used in seven eyes of six patients.

An eye for cricket. Ocular injuries in indoor cricketers.

Indoor cricket has become a popular form of recreation in Australia. Four cases of significant ocular trauma in indoor cricketers are reported. Three of the patients had diminished visual acuity in at least one eye before their injury.

Carbohydrate metabolism of salivary glands of acutely uremic rats.

Carbohydrate metabolism in salivary glands of acutely uremic rats was investigated. In the submandibular glands there was an increase of total carbohydrate and glycogen content 24 and 48 h following binephrectomy or ureter ligation. In contrast, lactate concentration was significantly lower.

The action of physalaemin on electrolyte excretion by the mandibular and sublingual salivary glands of the rat.

The effect of physalaemin, an undecapeptide belonging to a family known collectively as the tachykinins, on water and electrolyte excretion of the mandibular and sublingual salivary glands of the rat has been investigated and compared to that of acetylcholine. Drugs were administered intravenously or by close-arterial infusion. Physalaemin is a powerful stimulant of fluid secretion by both glands although less potent than acetylcholine.

[Ionized calcium and total calcium of parotid saliva in normotension and in arterial hypertension (author's transl)].

By the development of a disc-electrode and of an electrically neutral calcium carrier a precise determination of calcium ions in the parotid saliva has become available. With this new and simple method an exponential flow rate dependance of the concentration of calcium ions was found in normal persons. A steady state was observed in higher flow rates than 0.