Rim volume and height variation are similar in eyes with large and normal disc sizes

Article

Optic nerve head topographic parameters rim volume and height variation are similar in eyes with large and normal optic disc sizes.

Optic nerve head topographic parameters rim volume and height variation are similar in eyes with large and normal optic disc sizes, announced an investigation in the European Journal of Ophthalmology.

Dr Ali Bulent Cankaya et al., Ulucanlar Eye Research Hospital, Ankara, Turkey, compiled a study on 69 patients with macrodisc (group 1) and 91 healthy participants (group 2). Confocal scanning laser ophthalmoscopy was conducted in all participants. The amount of pariticpants identified as normal, borderline and glaucomatous, according to the Moorfield Regression Analysis, were compared between group 1 and group 2.

Group 1 presented a mean disc size of 3.36±0.36 mm² and 2.14±0.33 mm² in group 2. The factors that presented with the most significant differences between the two groups included: cup area, rim area, cup volume, cup/disc area ratio, linear cup/disc ratio, mean cup depth, maximum cup depth and cup shape measure.

Rim volume and height variation contour demonstrated no significant differences between the groups. The macrodisc group contained a higher number of abnormal eyes, as measured by Moorfield Regression Analysis.

Rim volume and height variation contour could be useful parameters in evaluating and comparing the optic nerve head of patients with macrodisc.

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