An evaluation of the preferred retinal locus (PRL) in patients with age-related macular degeneration and a central scotoma is becoming a standard of care in the practice of low-vision rehabilitation. This is a retrospective study of PRL specifications and whether they have a correlation with the best-corrected visual acuities of patients with age-related macular degeneration.
Seventy-two patients with macular degeneration (144 eyes) were included in the study. The PRLs were evaluated monocularly with a scanning laser ophthalmoscope. Each PRL's location, the fovea-PRL distance, the PRL edge of the lesion distance, and PRL stability were measured with the built-in caliper of the ophthalmoscope.
The most frequent location of a PRL was nasal (29.2%). The PRL was located in the left visual field of 34.0% of the patients. The best-corrected visual acuity values were positively correlated with the lesion's vertical and horizontal dimensions, as well as its surface area, the PRL-fovea distance, the PRL border of the lesion distance, and PRL stability.
The clinical PRL evaluation methodology that we describe can be used to facilitate making decisions on how to provide best visual rehabilitation to patients with a central scotoma.
The preferred retinal locus localization is an important part of the evaluation of the low-vision patients with central scotoma. When both eyes were evaluated together, the most frequent location of a preferred retinal locus was nasal (29.2%). The preferred retinal locus was located in the left visual field of 34.0% of the patients.
*Erbezci Eye Clinic, Izmir, Turkey; and
†Department of Ophthalmology, Dokuz Eylul University School of Medicine, Izmir, Turkey.
Reprint requests: Murat Erbezci, MD, Erbezci Eye Clinic, Plevne Bulvari No. 20/2, Izmir 35220, Turkey; e-mail: email@example.com
None of the authors has any financial/conflicting interests to disclose.