July 20, 2017
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Glaucoma detection program carries low costs in Philadelphia

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Laura Pizzi, PharmD, MPH
Laura T. Pizzi

Researchers assessed the costs of a glaucoma detection program in Philadelphia community centers and found that on a per-patient basis, examination costs were low, although opportunities exist to improve efficiency, according to a study from the British Journal of Ophthalmology.

Perspective from Carl H. Jacobsen, OD, FAAO

“In the U.S., an estimated $623 is spent per patient per year when glaucoma is in its early stages, but considerably more, at $2,511 per patient per year, when glaucoma is advanced,” according to Laura T. Pizzi, PharmD, MPH, and fellow researchers.

Of 1,649 participants across 43 sites within the Philadelphia Glaucoma Detection and Treatment Project (PGDTP), mean total per-participant examination time was 56 minutes, and mean patient age was 69 years.

PGDTP program sites are in areas with high rates of poverty, and lower income, older minority populations are at a higher risk for glaucoma and are often underserved in eye care, they wrote.

The examinations included a six-step process: check-in, participant consent and medical history; visual acuity, autorefraction, pupil check, measurement of central corneal thickness; fundus photo; visual field exam; ophthalmologist assessment; and check-out and satisfaction survey.

The population was 68% female, 70% were Black, and 545 (33%) were newly identified as having a glaucoma-related diagnosis.

The mean total examination cost/participant was $139.

Newly identified glaucoma cost/case was $420, and cost/case for any ocular disease identified was $273, according to the researchers.

There were 64 open-angle glaucoma and angle-closure glaucoma diagnoses and 151 angle-closure diagnoses.

A total of 293 cases of non-glaucomatous disease was detected.

The total cost for examinations without dilation was $64,680 ($40.45/participant).

The visual field test and the ophthalmologist step were the costliest exam steps, at $5.00 and $22.77, respectively.

For those receiving dilation, there was an additional average cost of $6.31.

The total examination cost for all participants (including both dilated and nondilated) was $67,018 ($41.00/participant).

The researchers determined that the detection rates were comparable with prior screening programs that focused on high-risk populations.

Researchers found a high number of narrow-angle cases and attribute this to participants coming from an underserved population with a higher prevalence of cataracts.

“Findings are important because detection and treatment can delay glaucoma progression and its associated costs,” researchers wrote.

The authors said they hope the findings can be used to identify opportunities to increase PGDTP efficiency and those within other community-based glaucoma detection programs.

“There is very little research on the implementation costs of glaucoma community-based examination,” Pizzi said in an interview with Primary Care Optometry News. “This paper addresses this void and will inform other institutions seeking to operationalize such programs.” – by Abigail Sutton

Disclosure: Pizzi reports no relevant financial disclosures. Please see the full study for remaining authors’ disclosures.