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Biomedical subjects

S Saragas

Publications and source records attributed to S Saragas.

6 recordsLinked to original sources
PubMed1985

Reversal of wound strength retardation by addition of insulin to corticosteroid therapy.

Corticosteroids are known to retard the healing of corneal stromal wounds as well as to have positive anti-inflammatory effects. This study was designed to see if the addition of insulin to dexamethasone, administered subconjunctivally bid, would maintain dexamethasone's anti-inflammatory effect without inhibiting the healing (as measured by the wound bursting pressure) of a laboratory-inflicted 3-mm through-and-through central incision in the rabbit cornea. The results of a study involving 43 animals (86 eyes) showed the wounds to be significantly stronger in the insulin/dexamethasone-treated eyes than in the dexamethasone-treated eyes. The same anti-inflammatory effect was achieved with either protocol. Its mechanism of action is undetermined.

Administration, Topical↗
PubMed1984

Improved visualization through cataracts using intravitreal illumination.

It is known that intravitreal illumination during vitrectomy improves both contrast and resolution for the surgeon by eliminating backscatter and reflections from both cornea and lens. The experiments described in this paper set out to quantitate the amount of improvement in these optical parameters using simulated intravitreal illumination when a target was viewed behind a cataractous lens. The results show an almost fourfold increase in contrast and a twofold increase in resolution when the illumination is placed behind the cataract, ie, intravitreal illumination vs external microscope illumination where the illumination is placed between the cataract and the observer.

Animals↗
PubMed1984

Simple method for locating the optical center of a lens.

This article evaluates an old and little used method, which involves holding a small light in front of the lens and marking the spot where the centers of the images reflected from the front and rear surfaces overlap. The location of the center found this way correlates very well with the marking lensometer method. This method may also be used while the patient is wearing the spectacle. Thus, the examiner may easily see the patient's pupillary center and the optical center simultaneously. Induced prismatic effects from inaccurate lens centering can easily be diagnosed without removing the spectacle from the patient's face.

Eyeglasses↗
PubMed1983

Tape lid retraction.

A method of retracting the upper lid with sticky tape is described. Such a tape retraction eliminates the need for a third hand in office procedures such as limbal suture removal, corneal foreign body removal, and anterior segment photography.

Adhesives↗
PubMed1983

Estimating the power of a minus spectacle while worn by the patient.

This paper presents a new method of estimating the power of a minus spectacle lens without removing the spectacle from the patient's face. The examiner shines a small light toward the spectacle and measures the separation between the images reflected from the front and rear surfaces of the lens. The study presents a relationship between separation of reflected images and the power of minus lenses from 0 to -12 D. The article also contains a theoretical explanation of the phenomenon.

Eyeglasses↗