Baseline Topographic Optic Disc Measurements Are Associated With the Development of Primary Open-Angle Glaucoma: The Confocal Scanning Laser Ophthalmoscopy Ancillary Study to the Ocular Hypertension Treatment Study

2006 ◽  
Vol 2006 ◽  
pp. 57-58
Author(s):  
J.S. Myers
2013 ◽  
Vol 70 (3) ◽  
pp. 304-308
Author(s):  
Ranko Gvozdenovic ◽  
Dusica Risovic ◽  
Ivan Marjanovic ◽  
Miroslav Stamenkovic ◽  
Zorica Jokovic ◽  
...  

Background/Aim. Primary open angle glaucoma (POAG) and normal tension glaucoma (NTG) demonstrate the same structural changes in the optic disc along with visual field defects but only POAG includes an abnormal elevation of intraocular pressure. Heidelberg retina tomograph based on confocal scanning laser ophthalmoscopy (HRT) and Moorfields regression analysis (MRA) have been employed to quantitatively assess the topography of eye papilla. We measured stereographic parameters of eye papilla in patients with POAG, NTG, and ocular hypertension (OH) using an HRT in order to determine whether HRT topographic parameters can be used to differentiate those conditions. Methods. The results of 145 eyes of 145 patients with OH, NTG and POAG were analyzed by age, refractive error, quality of HRT images, stereometric and MRA parameters. Results. Significant differences were found between NTG and other two groups for a majority of the HRT parameters, and also no differences between OH and POAG patients for a majority of the investigated parameters, except thickness of retinal nerve fiber layer. By reading the MRA no differences were found in the distribution of mostly damaged and mostly preserved neuroretinal rim sectors between NTG and POAG patients, and also all sectors of the neuroretinal rim in OH patients were preserved. Conclusion. HRT stereometric parameters are useful to differentiate patients with OH and NTG, and also for differentiation between NTG and POAG patients, but most of parameters showed no difference between OH and POAG patients. MRA may serve to confirm the diagnosis of OH, but not for precise distinction between NTG and POAG.


Author(s):  
Alan D. Penman ◽  
Kimberly W. Crowder ◽  
William M. Watkins

The Ocular Hypertension Treatment Study (OHTS) was a randomized, open, placebo-controlled, clinical trial to determine whether reducing intraocular pressure (IOP) in eyes with ocular hypertension (OHTN) reduced the risk of developing primary open-angle glaucoma (POAG). The study found that topical ocular hypotensive medication was effective in delaying or preventing the development of glaucomatous optic neuropathy in eyes with OHTN. However, the authors recommended stratifying risk in patients with OHTN using variables such as baseline age, vertical and horizontal cup-to-disc ratio, visual field pattern standard deviation, IOP, and, especially, central corneal thickness.


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