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Biomedical subjects

Jeffrey D Benner

Publications and source records attributed to Jeffrey D Benner.

4 recordsLinked to original sources

Limited macular translocation for atrophic maculopathy.

OBJECTIVES: To report visual improvement following bilateral limited macular translocation for a patient with atrophic macular disease, and to discuss issues related to the selection of potential candidates for this technique. DESIGN: Case report. RESULTS: A 78-year-old woman with bilateral atrophic maculopathy and no choroidal neovascularization had slowly progressive loss of visual acuity for at least 17 months in the right eye and 25 months in the left eye. She underwent bilateral limited macular translocation, using scleral infolding in the right eye and scleral outpouching in the left eye. Following translocation of her maculae, her best-corrected visual acuity improved from 20/200 to 20/30 OD and from 20/180 to 20/100 OS. She remained stable during 30 months of follow-up for the right eye and 22 months of follow-up for the left eye. CONCLUSION: Macular translocation may allow visual recovery in selected patients with atrophic maculopathy, even after a prolonged period of poor vision.

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Macular infarction after transpupillary thermotherapy for subfoveal choroidal neovascularization in age-related macular degeneration.

PURPOSE: To report the complication of macular infarction after transpupillary thermotherapy (TTT) for the treatment of subfoveal choroidal neovascularization (CNV) due to age-related macular degeneration (AMD). DESIGN: Interventional case reports. METHODS: Among 107 consecutive patients with subfoveal CNV due to AMD, a 73-year-old woman with recurrent subfoveal classic choroidal neovascularization and a 76-year-old man with subfoveal occult choroidal neovascularization with adjacent areas of geographic retinal pigment epithelium atrophy noted a severe decrease in visual acuity and photopsias within hours of undergoing TTT. RESULTS: Both patients had marked whitening of the macula clinically and closure of the perifoveal capillaries on fluorescein angiography. Immediately after treatment their visual acuity decreased from 20/200 to 6/200 and from 20/400 to 2/200, respectively. Several months later, all exudation had resolved and their visual acuity had stabilized at 20/100 and 20/200, respectively. CONCLUSIONS: Macular infarction is a rare complication that occurred in two of 107 patients undergoing TTT for subfoveal CNV due to AMD. The presence of geographic retinal pigment epithelium atrophy or a previous laser treatment scar in the macular region may predispose patients to this complication.

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2,4-Dinitrophenol pharmacologically promotes retinal detachment in rabbits.

PURPOSE: The most difficult and unpredictable step of macular translocation surgery is creating the retinal detachment. The authors evaluated the efficacy of 2,4-dinitrophenol (2,4-DNP) to promote retinal detachment in the rabbit. METHODS: A vitrectomy was performed in each eye of a Dutch-belted rabbit. One eye was injected with 0.1 cc of a 5 mmol/L 2,4-DNP, the other eye with 0.1 cc of BSS+. After 30 minutes, the minimum aspiration pressure required to visibly elevate the retina was recorded. Four nonvitrectomized eyes received an intravitreal injection of either 0.1 cc of BSS+ or 5 mmol/L 2,4-DNP, and were enucleated and fixated for histopathologic examination. RESULTS: In the 12 masked eyes, the mean aspiration pressure decreased from 217 +/- 20 mmHg in the six BSS+ eyes to 117 +/- 20 mmHg in the six 2,4-DNP treated eyes (P = 0.0022). A retinal detachment was present in three of six masked and two of two unmasked 2,4-DNP treated eyes and none of eight BSS+ treated eyes. There was no short-term toxicity to the retina at the light microscope level. CONCLUSION: Intravitreal injection of 2,4-DNP reduced the retinal adhesive force by over 50% when compared to the BSS+ treated control eyes, without any short-term retinal toxicity.

2,4-Dinitrophenol↗