To assess the agreement between the disc size assessed by Heidelberg retina tomograph (HRT) and stereobiomicroscopy with a 90 diopter (D) lens. To report the clinical (measured by biomicroscopy) disc diameters of small, average and large optic discs categorized by …

2024年11月8日 · Optic disc size measurement is essential for determining landmarks, lesions, and distances of the retina. Due to the size variability in nature and when measured with different instruments, newer methods to compare sizes between different instruments are needed.

2023年1月21日 · Using fundoscopic technologies is an effective and affordable method for measuring the optic nerve head while retaining a high level of accuracy. These dimensions can be used to divide the sizes of optic discs into three groups: small, average, and large. Primary open-angle glaucoma is a progressive optic neuropathy.

2005年11月1日 · Optic disc and RNFL assessment can be performed according to 5 rules that include the evaluation of optic disc size, rim shape and area, presence of RNFL loss, PPA, and retinal or optic disc hemorrhages.

Purpose: To investigate the magnification characteristic of the +90-D double-aspheric fundus examination lens for biomicroscopic measurement of the optic disc. Methods: A calibrated Gullstrand-type model eye adjusted for axial ametropia between -12.5 and +12.6 D was used to measure the change in magnification of the system with refractive error ...

Measuring the disc size by indirect ophthalmoscopy is possible. The 90D lens showed the smallest and the 78D lens the largest deviation.

It is critical to first correctly estimate the size of the optic disc when investigating for glaucoma. Measurement of optic disc size is best performed at the slit lamp using a narrow vertical light beam and a condensing fundus lens.

Assessment of optic disk size is an important, but often overlooked, component of the diagnostic evaluation for glaucoma. Measured values of optic disk size vary with the measurement technique utilized. Available methods for disk size measurement and their respective strengths and limitations will be discussed.

2002年7月1日 · Prospective, observational study of 55 eyes of 55 subjects who underwent horizontal and vertical optic disc diameter measurements with +90 diopter lens on slit-lamp biomicroscopy (clinical) and...

2022年7月18日 · The five ‘R’s for assessment of the optic disc in glaucoma 1. Scleral Ring: Determine the size and shape of the optic disc by comparing it with the size of the slit beam. The correction factor to be applied for the Volk +60D, +78D, and …