Tilted Optic Disc Frequency in Myopia of Different Degree

Area of Science:

• Ophthalmology
• Optometry
• Glaucoma Research

Background:

• Myopic fundus changes often include tilted optic discs, making early detection of optic disc pathology difficult due to altered nerve fiber arrangement.
• Myopia is a significant risk factor for glaucoma, highlighting the importance of understanding optic disc morphology in these patients.

Purpose of the Study:

• To investigate the frequency of tilted optic discs across varying degrees of myopia.
• To assess the impact of tilted discs on glaucoma assessment, particularly concerning the reliability of Optical Coherence Tomography (OCT) parameters.

Main Methods:

• A study involving 150 patients (300 eyes) was conducted between September 2013 and December 2014.
• Patients were categorized into three groups based on diagnosis and further divided by optic disc diameter.
• Statistical analysis was performed using the ANOVA test.

Main Results:

• A statistically significant association was found between tilted disc shape and higher degrees of myopia (p <0.05).
• Patients with large tilted discs (4.05 ± 0.65) exhibited the highest myopia levels within this subgroup.
• Myopia severity demonstrated a linear decrease in relation to increasing tilted disc size.

Conclusions:

• Myopia severity decreases linearly as the size of the tilted optic disc increases.
• Understanding this relationship is crucial for accurate glaucoma assessment in myopic individuals with tilted discs.