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Biomedical subjects

Craig M Greven

Publications and source records attributed to Craig M Greven.

6 recordsLinked to original sources
PubMed2006

Circumstance and outcome of ocular paintball injuries.

PURPOSE: To determine the circumstance and outcome of ocular injuries attributable to paintball projectiles. DESIGN: Retrospective interventional case series. METHODS: Institutional review board approved retrospective chart review of 19 consecutive eyes with paintball injuries with minimum follow-up of 3 months. RESULTS: Ten eyes (53%) had final visual acuity of 20/40 or better, while seven (36%) were 20/200 or worse. Ten eyes were injured in paintball games, (two formal and eight informal), while nine (47%) were injured by accidents or assaults not associated with any "game." CONCLUSIONS: Paintball injuries often cause severe and permanent visual loss. Nearly half of these injuries occur outside a war game setting as accidents or assaults.

Adolescent↗
PubMed2004

Delayed visual loss after pars plana vitrectomy for retained lens fragments.

PURPOSE: To report visual results and postoperative complications in patients undergoing vitrectomy for retained lens fragments. METHODS: Retrospective, noncomparative, interventional case series of 42 consecutive patients undergoing vitrectomy for retained lens fragments by a single surgeon, all with a minimum of 6 months' follow-up. The main outcome measurement was best corrected visual acuity at 3 months and at final follow-up visit. RESULTS: Although 67% of eyes achieved a postoperative visual acuity of 20/40 or better at 3 months, 17% had events during follow-up that resulted in loss of vision to less than 20/40. Final best corrected visual acuity 20/40 or better was achieved in 50% of eyes. Retinal detachment occurred in 17%, and 21% of eyes required long-term therapy for glaucoma. CONCLUSION: Patients undergoing vitrectomy for retained lens fragments often develop delayed visual loss. Long-term surveillance is necessary in these patients.

Adult↗
PubMed2002

Visual results, prognostic indicators, and posterior segment findings following surgery for cataract/lens subluxation-dislocation secondary to ocular contusion injuries.

OBJECTIVE: To determine visual outcomes, incidence of posterior segment abnormalities, and prognostic factors in eyes undergoing lens removal for cataract or lens subluxation-dislocation secondary to ocular contusion injuries. DESIGN: Retrospective, noncomparative, interventional case series. PARTICIPANTS: Forty eyes in forty consecutive patients undergoing lens extraction for ocular contusion-related cataract or lens subluxation, all with a minimum of 6 months' follow-up. INTERVENTION: Lens extraction in the traumatized eye. MAIN OUTCOME MEASURE: Final best-corrected visual acuity. RESULTS: Final best-corrected visual acuity was 20/40 or better in 55% of eyes, and ambulatory vision (>5/200) was achieved in 88%. Preoperative factors associated with poorer visual outcome (<20/40) were the presence of an afferent pupillary defect or an iridodialysis (P < 0.05). Seventy percent of eyes were determined to have significant posterior segment injuries. The cause of final visual acuity less than 20/40 included macular scarring (23%), retinal detachment (15%), and optic atrophy (5%). CONCLUSION: Cataract or lens subluxation secondary to ocular contusion injuries is often associated with severe posterior segment sequelae and poor visual outcomes.

Adolescent↗
PubMedDate not supplied

Avoiding and managing the dislocated crystalline lens.

A major complication of cataract surgery is the posterior dislocation of crystalline lens material, which may lead to poor visual outcomes. Knowledge of preoperative high-risk situations, causes of lens dislocation, and intraoperative warning signs should lead to reduced complications. This update reviews techniques to avoid the dislocated lens, and management options if this complication does occur.

Cataract Extraction↗