The effect of panretinal photocoagulation on confocal laser scanning ophthalmoscopy and stereo photographic parameters of optic disk topography in patients with diabetic retinopathy.
Arq Bras Oftalmol
; 82(4): 295-301, 2019.
Article
in En
| MEDLINE
| ID: mdl-31038552
PURPOSE: To determine the effect of panretinal photocoagulation on optic disk topographic parameters in non-glaucomatous patients with proliferative diabetic retinopathy. METHODS: This was a prospective, single-center, observational study. Thirty-eight eyes of 26 patients with diabetes underwent panretinal photocoagulation for proliferative diabetic retinopathy. Stereoscopic disk photographs and optic nerve head parameters were evaluated using the Zeiss fundus camera and the confocal scanning laser ophthalmoscope (Heidelberg Retinal Tomograph), respectively, at baseline and 12 months after the completion of panretinal photocoagulation. RESULTS: Thirty-eight eyes of 26 patients (15 female) with a mean age of 53.7 (range 26-74) years were recruited. No significant difference was found between the stereo photography determined mean horizontal and vertical cup-to-disk ratio before and after panretinal photocoagulation treatment (p=0.461 and 0.839, respectively). The global values of the optic nerve head parameters analyzed with the HRT3 showed no significant change from baseline to 12 months, including the disk area, cup area, rim area, cup volume, rim volume, cup-to-disk area ratio, linear cup-to-disk ratio, mean cup depth, maximum cup depth, cup shape measure, height variation contour, mean retinal nerve fiber layer thickness, and cross-sectional area. CONCLUSION: Our results suggest that panretinal photocoagulation does not cause morphological optic disk changes in patients with diabetic proliferative retinopathy after 1 year of follow-up.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Ophthalmoscopy
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Optic Disk
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Laser Coagulation
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Microscopy, Confocal
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Diabetic Retinopathy
Type of study:
Clinical_trials
/
Observational_studies
Limits:
Adult
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Aged
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Female
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Humans
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Male
/
Middle aged
Language:
En
Journal:
Arq Bras Oftalmol
Year:
2019
Document type:
Article
Affiliation country:
Brazil
Country of publication:
Brazil