Screening for glaucoma with frequency-doubling technology and Damato campimetry

Area of Science:

• Ophthalmology
• Medical Technology
• Public Health

Background:

• Glaucoma is a leading cause of irreversible blindness worldwide.
• Early detection through screening is crucial for managing glaucoma and preventing vision loss.
• Visual field testing plays a key role in glaucoma diagnosis and monitoring.

Purpose of the Study:

• To compare the effectiveness of frequency-doubling technology (FDT) perimetry and Damato campimetry for glaucoma detection during a public screening event.
• To evaluate the sensitivity and specificity of each perimetry method in identifying glaucoma.

Main Methods:

• A public glaucoma screening involved 240 subjects for FDT perimetry and 175 for Damato campimetry.
• Both tests were conducted alongside ophthalmologic examinations and Humphrey perimetry.
• Eyes were categorized as normal, ocular hypertensive, glaucoma suspect, or definite glaucoma.

Main Results:

• FDT perimetry achieved an area under the receiver operating characteristic curve of 0.925, with optimal sensitivity of 92% and specificity of 93%.
• Damato campimetry had an area under the curve of 0.883, with optimal sensitivity of 53% and specificity of 90%.
• FDT perimetry was significantly faster, averaging 1 minute per eye compared to 3 minutes for Damato campimetry.

Conclusions:

• Frequency-doubling technology perimetry proved superior to Damato campimetry for glaucoma screening in this study.
• FDT perimetry offers a more sensitive and specific, as well as a more time-efficient, method for public glaucoma screening.