Biomedical subjects

E Punnonen

Publications and source records attributed to E Punnonen.

8 recordsLinked to original sources

PubMed1990

Pathological findings in eyes enucleated because of perforating injury.

Forty-eight eyes enucleated after a perforating eye injury (PEI) in 1980-86 (15% of all PEIs) were examined. The time between injury and enucleation varied from 0 to 1145 days. The lens had been damaged or lost in all eyes and 94% had an uveal tract injury. In 83% the retina was detached, in 15% it was totally prolapsed in injury. The inflammatory signs were most marked in eyes with a corneoscleral or double perforation. Proliferation of the retinal pigment epithelial cells or fibrous proliferation from the wound or ciliary body was found 9-10 days after trauma and epiretinal membranes from the optic nerve head or from the surface of the retina after 1 month. Massive fibrous proliferation was seen in 94% of eyes enucleated 1 month or later after injury. One case of post-traumatic purulent endophthalmitis was detected, but signs of sympathetic ophthalmia were not observed.

Adolescent↗

PubMed1989

Silicone oil in retinal detachment surgery. Results and complications.

Results and complications with the use of intraocular silicone oil in 25 eyes operated on for complicated retinal detachment are reported. Most eyes had undergone several operations for detachment before silicone injection. The follow-up time after silicone injection was 12-48 months. In perforating injuries the outcome was quite poor, 27% received anatomic success (attached retina) compared to primary rhegmatogenous detachments with 57% success rate. Visual acuity was counting fingers 1 m or better in 56% in the whole group examined. Silicone oil was removed in 5 eyes. Of the late complications, keratopathy occurred in 3 eyes (12%), increased intraocular pressure in 4 eyes (16%), and cataract in 2 of 3 phakic eyes. Angiographic signs of iris neovascularization were obvious or suspected in 3 of 9 eyes examined.

Adolescent↗

PubMed1989

Changes in corneal endothelium after treatment of retinal detachment with intraocular silicone oil.

Keratopathy represents one of the most frequent late complications in eyes with complicated retinal detachment treated with intraocular silicone oil. Corneal examinations including endothelial specular photography were done on 18 silicone treated eyes, 16 of which were aphakic. In addition to widespread silicone oil endothelial contact in 2 eyes, a bubble or droplets of silicone oil were observed in the anterior chamber in 8 eyes. The mean endothelial cell density was lower in the silicone eyes (2076 +/- 196 cells/mm2) as compared to the control fellow eyes (2738 +/- 86 cells/mm2) (P = 0.004). In eyes with silicone oil in the anterior chamber the endothelial cell density was significantly decreased (1857 +/- 232 cells/mm2) (P = 0.005). Obvious endothelial degeneration was noticed when silicone oil had been in the eye for more than a year. Also small droplets of oil with transient contact contributed to its development.

Adolescent↗

PubMed1989

Prognosis of perforating eye injuries with intraocular foreign bodies.

The long-term results of 95 consecutive eyes with a perforating eye injury and an intraocular foreign body (IOFB) treated with or without pars plana vitrectomy are reported. With the mean follow-up time of 30.0 months (median 22.8 months) 10 eyes (11%) were enucleated and another 17% became blind (visual acuity less than 0.05). The enucleation rate was considerably decreased and the visual outcome improved as compared with previous studies in Finland. The visual outcome was affected unfavourably by posterior location of the perforation, blunt injury, prolapse of intraocular tissue and poor initial visual acuity. There was no significant difference in the visual outcome between eyes with posterior segment IOFBs treated with or without vitrectomy. In the posterior perforation group the visual outcome was slightly better in eyes in which vitrectomy was performed (P = 0.336), and early vitrectomy within 1 week gave best visual results (P = 0.692). In 79% of the non-enucleated eyes the retina was attached. The anatomic success rate was similar regardless of the timing of vitrectomy.

Adolescent↗

PubMed1989

Epidemiological and social aspects of perforating eye injuries.

The epidemiology of 387 consecutive perforating eye injuries (PEI) treated at the Helsinki University Eye Hospital in 1980-1986 was evaluated. Eighty-six percent of patients were males. The age group of 16-45 years predominated among males, 0-15 years among females. The mean age of all patients was 33.7 years. Forty percent of the male injuries were occupational, 38% domestic and 11% caused by assault. The corresponding figures for females were 9%, 53% and 23%, respectively. The occupation groups most often associated with accidents at work were construction (42%) and industry (30%). Five percent of all PEIs were caused by traffic accidents, and 3% were sports-related. After treatment 91% of the economically active patients were able to return to their pre-accident work, 4% had to change profession, and 5% became permanently disabled and unable to work.

Accidents, Occupational↗

PubMed1989

Long-term follow-up and the role of vitrectomy in the treatment of perforating eye injuries without intraocular foreign bodies.

The long-term results of 292 consecutive eyes with a perforating eye injury without an intraocular foreign body treated with or without pars plana vitrectomy are reported. With the mean follow-up time of 31.0 months 45 eyes (15%) were enucleated and another 47 eyes (16%) were blind (visual acuity less than 0.05). The retina was attached in 87% of the non-enucleated eyes. The visual outcome was considerably better in eyes with anterior segment injuries (ASI) compared to posterior segment injuries (PSI). Eyes with primary vitreous haemorrhage had poorer visual prognosis than eyes without haemorrhage. Vitrectomy improved the prognosis of the former eyes, but in the whole series the visual acuity was better in eyes in which vitrectomy was not performed (not considered indicated). Of the vitrectomized eyes, 55% in the ASI group and 25% in the PSI group received useful vision (visual acuity greater than or equal to 0.05). Excluding the very late vitrectomies, a statistically significant correlation was found between the timing of vitrectomy and the late visual outcome.

Adolescent↗

PubMed1989

[Cluster headache].

Explore the source record for details and available documents.

Cluster Headache↗

PubMed1987

'Idiopathic' preretinal macular fibrosis in young individuals.

In order to evaluate possible etiological factors and the natural course of 'idiopathic' preretinal fibrosis in young persons, nine consecutive patients with macular pucker diagnosed under the age of 50 years were examined. There were six women and three men with the mean age of 27.2 years (range 15-50) and the mean follow-up of 4.5 years (range 1.5-10). The initial visual acuity varied from 0.25 to 1.0. The preretinal membrane was either central or paramacular. In two eyes the process was probably congenital (retinal hamartoma), one was postinflammatory (retinal vasculitis), and one was associated with sclerosis of the anomalous macular arterioles. In the others no causative factors were discovered. In seven of the nine eyes both the visual acuity and the fibrotic process remained stable, in one eye the vision improved, and in one eye deteriorated. It seems that most young persons with 'idiopathic' preretinal fibrosis of the macula can be followed up without surgical removal of the membrane.

Adolescent↗