The effect of treatment on the results of high‐pass resolution perimetry in glaucoma

Abstract

In order to find out to which extent high-pass resolution perimetry would detect any changes in patients treated for glaucoma, resolution perimetry results were evaluated from 56 glaucoma patients and 15 untreated ocular hypertensive patients followed for 2 to 3 years. Fifty-nine of the 71 examined patients showed lower resolution thresholds, i.e. increased sensitivity, after 2 years, compared to initial values. The threshold decrease was significantly larger in the treated glaucoma patients (median 1.22 dB) than in the untreated ocular hypertensive patients (0.48 dB). The threshold decrease in the untreated ocular hypertensive group corresponds to the previously described learning effect. In 35 of the 56 treated glaucoma patients the thresholds improved more than 0.84 dB, the upper confidence limit in the untreated group, which may indicate a beneficial effect of antiglaucoma therapy in these patients. The threshold change was unrelated to initial resolution threshold and cannot be explained by a 'sorting' effect. The observations in the current study using resolution perimetry indicate that improved visual function can be demonstrated in many patients treated for early glaucoma, at least during the first 2 years of treatment.

Management of ocular hypertension and open angle glaucoma: Clinical practice and computer‐assisted decision‐making

“…The most critical part of the program deals with grading of glaucoma. Data were derived from normal subjects (Martin-Boglind 1993) and glaucoma patients ' I (Martin-Boglind & Wanger 1994;Martin & Wanger, unpublished data). The program uses information about age, resolution perimetry findings (Wanger & Persson 1987;Fristn 1993a,b), heredity for glaucoma, IOP, the occurrence of pseudoexfoliations and/or vascular lesions, and whether the patient has anti-glaucoma treatment or not, altogether seven pieces of information.…”

Cataract and high‐pass resolution perimetry

“…H (Frisen 1987(Frisen , 1993a(Frisen , 1993b has during the last years become a well-established perimetric method, especially in glaucoma patients (Wanger & Persson 1987;Sample et al 1992;Wanger & Martin-Boglind 1993;Martinez et al 1995;Martin-Boglind & Wanger 1994). Since glaucoma almost exclusively affects elderly people, many of the patients also have lens opacities.…”