Frequency doubling technology, optical coherence technology and pattern electroretinogram in ocular hypertension.

Area of Science:

• Ophthalmology
• Glaucoma Research
• Diagnostic Imaging

Background:

• Ocular hypertension (OH) presents a risk for developing glaucoma.
• Early detection of glaucomatous damage is crucial for timely intervention.
• Comparing diagnostic methods aids in clinical decision-making.

Purpose of the Study:

• To evaluate the sensitivity and specificity of Optical Coherence Tomography (OCT), Pattern Electroretinogram (PERG), and Frequency-Doubling Technology (FDT) for detecting early glaucomatous damage in patients with ocular hypertension (OH).

Main Methods:

• Fifty-two patients with OH and 52 controls underwent OCT, FDT, and PERG.
• All participants had normal visual acuity, optic discs, and perimetric indices.
• Statistical analyses included unpaired t-tests, Chi-square, and Receiver Operating Characteristic (ROC) curve analyses.

Main Results:

• FDT-Pattern Standard Deviation (PSD) demonstrated the highest sensitivity (92%) and specificity (86%) with an Area Under the ROC Curve (AUC) of 0.940.
• OCT showed a sensitivity of 82% and specificity of 74% in the inferior retinal nerve fiber layer (RNFL) quadrant (AUC=0.806).
• PERG amplitude had lower sensitivity (52%) but comparable specificity (77%) (AUC=0.595).

Conclusions:

• Frequency-doubling technology (FDT) is the most sensitive and specific method for early glaucoma detection in OH.
• Combined use of FDT and OCT can assist in identifying patients at high risk of glaucoma development.