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Biomedical subjects

R M Kershner

Publications and source records attributed to R M Kershner.

8 recordsLinked to original sources
PubMed1991

Sutureless one-handed intercapsular phacoemulsification. The keyhole technique.

Advances in the phacoemulsification technique have made small incision cataract surgery with lens implantation and sutureless incision closure a reality. This paper describes a step-by-step technique of small incision construction (the key), capsulorhexis (the keyhole), hydrodissection, intercapsular phacoemulsification (the doorway), and small incision lens implantation without the need for suture closure. A review of 200 cases with follow-up at one year is described. Evaluation of a postmortem eye at eight weeks following this sutureless technique indicates that these incisions are self-sealing, do not leak, do not induce astigmatic change, and allow rapid visual recovery.

Aged↗
PubMed1990

One-step forceps for capsulorhexis.

There are several popular methods for creating a continuous-tear capsulotomy, or capsulorhexis, which usually involve several instruments and steps. This report describes a new forceps for capsulorhexis that can be used to open the capsule and complete the circular tear in one step. Its unique features are its small size, shortened length, thin, rounded blades with cystotome-type tips for opening the capsule, and round handles for manipulation ease.

Equipment Design↗
PubMed1985

Systemic side effects associated with the ophthalmic administration of timolol.

Since the introduction of ophthalmic timolol solution in 1978 there have been numerous reports of systemic toxicity associated with its use. The majority of the systemic side effects reported are the same as those associated with oral timolol. Several cases of respiratory distress have been described generally in patients with underlying restrictive airway disease. Cardiovascular effects range from effects on resting pulse rate to the development of overt bradycardia and heart failure. Central nervous system effects reported include fatigue, confusion, depression, and hallucinations. A variety of other systemic effects have also been described. Caution should be used when ophthalmic timolol is administered to elderly patients or those patients with contraindications to systemic beta-blockers.

Absorption↗