ONH OCT diagnostic parameters of glaucoma in high myopes

Session Details

Session Title: Glaucoma Management

Session Date/Time: Monday 16/09/2019 | 16:30-18:00

Paper Time: 16:42

Venue: Free Paper Forum: Podium 4

First Author: : A.M Noureldine EGYPT

Co Author(s): :    P. Fouad   H. Ahmed   M. Khafagy                       

Abstract Details

Purpose:

This study's aim was to assess the changes occurring in the OCT parameters in high myopic glaucoma patients, to enable early diagnosis and prevention of progressive glaucomatous damage.

Setting:

This study was performed at the department of ophthalmology, Kasr Alainy Hospital, Cairo University, in a twenty months' period.

Methods:

This study was a cross sectional randomized single blinded study. It included 62 eyes high myopic individuals. Patients were divided into 2 groups: Group A included myopic non-glaucomatous individuals, and Group B included the myopic glaucoma patients. All patients had a full ophthalmological examination, and had an Optical Coherence Tomography (OCT) assessment of the Retinal Nerve Fiber Layer (RNFL), Ganglion Cell Complex(GCC) and Optic Nerve Head (ONH) parameters. Visual field (VF) was tested as well as Axial Length (AXL) and Central Corneal Thickness (CCT). Correlation of all these data was done.

Results:

Regarding the Global Loss Volume (GLV), its mean in group A was 11.88±6.71% versus 19.69±9.69 % in group B, the difference between both groups was statistically significant (p=0.001). Regarding the cup area, the mean in group A was 0.51±0.41 mm2, while in group B was 1.25±0.72 mm2, the difference between both groups was statistically significant (p<0.001).

Conclusions:

The ONH parameter Cup area, and the GCC parameter GLV are key parameters in supporting the diagnosis of glaucoma in myopic patients. Other parameters measured by OCT such as inferior RNFL thickness, FLV, and C/D ratio could help in aiding the diagnosis as well.

Financial Disclosure:

None