Mild Learning Effect of Short-wavelength Automated Perimetry Using SITA Program

作者：Fogagnolo Paolo^*; Tanga Lucia; Rossetti Luca; Oddone Francesco; Manni Gianluca; Orzalesi Nicola; Centofanti Marco

来源：Journal of Glaucoma, 2010, 19(5): 319-323.

DOI：10.1097/IJG.0b013e3181bd89af

• SITA SWAP
• perimetry
• learning effect
• glaucoma

Purpose: To evaluate the learning effect at Short-wavelength Automated Perimetry (SWAP) using the Swedish Interactive Threshold Algorithm (SITA) program over the central 24 degrees on patients with ocular hypertension experienced with standard automated perimetry.
Methods: Twenty-seven patients underwent 5 SITA SWAP tests at intervals of 5 +/- 2 days in a randomized eye. Learning effect was defined as an improvement in results for duration, perimetric indices, foveal sensitivity, Glaucoma Hemifield Test, number of points with a P < 5% and < 1% in the total, and pattern deviation maps, total, central, paracentral, peripheral, and quadrant sensitivity.
Results: Learning effect was shown for foveal sensitivity (P=0.006, analysis of variance), which was significantly different only between the first (23.0 dB perpendicular to 4.1 dB) and the last test (24.7 dB perpendicular to 3.8 dB, P = 0.003, t test) and was not affected by any demographic or ophthalmic characteristics of the population. All the other parameters did not show any significant learning effect.
Conclusions: SITA SWAP is affected by a small learning effect interfering only with the first test, as opposite to full-threshold SWAP program, which previously showed severe learning artefacts. This fact may induce reconsideration of the clinical utilization of SWAP for the early diagnosis of glaucoma.

• 出版日期2010-7