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Biomedical subjects

M K Helgeson

Publications and source records attributed to M K Helgeson.

2 recordsLinked to original sources
PubMed1992

Retinal dialysis.

Whether idiopathic or the result of ocular trauma, retinal dialysis is one of the least understood causes of retinal detachment. Dialyses are a common cause of retinal detachment and are the leading cause of traumatic retinal detachment in children and young adults. A dialysis is a disinsertion of the retina found at the ora serrata, generally involving less than 3 clock hours. Because a patient may be asymptomatic, a dialysis may be missed during ophthalmoscopic examination of the ocular fundus unless scleral indentation is used. Anatomical reattachment of detachments from retinal dialysis is highly successful for dialyses of both traumatic and idiopathic origin, with good visual results obtained postoperatively.

Fundus Oculi↗
PubMed1991

Ocular ochronosis from alkaptonuria.

Alkaptonuria is an extremely rare, autosomal recessive disorder in which the metabolic enzyme homogentisic acid oxidase is deficient. A common sequelae is the subsequent accumulation of homogentisic acid in collagenous tissues, such as the sclera, nose and ear lobes. The blue-black pigmentation found in patients with alkaptonuria is called ochronosis. Another ocular sign includes amber-colored oil globulation within Bowmans membrane of the cornea.

Aged↗