Authors
Gardiner, Stuart K.; Demirel, Shaban; Johnson, Chris A.

Is There Evidence for Continued Learning Over Multiple Years in Perimetry?

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Abstract/Introduction

Purpose

The existence of learning effects in perimetry, whereby a subject's first test is more variable and has lower mean sensitivity (MS) than subsequent tests, is well established. However, studies have typically examined this issue by testing subjects at a frequency that would be unusual in a clinical setting. This study seeks to determine the validity of these conclusions for less frequent, yet more clinically realistic, testing rates.

Methods

One hundred sixty eyes of 80 subjects with suspected or early glaucoma were included. Subjects were tested annually for 8 years using white-on-white standard automated perimetry (SAP) and short wavelength automated perimetry (SWAP). All subjects had undergone at least one test with both paradigms before entering the study.


Conclusion/Results

Results

For SAP, MS increased by 0.5 dB over the first year, and then showed no significant change until after year 5 (despite expected effects of aging and disease progression), after which it started to decline. For SWAP, MS of the average eye continued to improve until year 6 of the study.

Conclusions

Our findings seem to indicate a prolonged learning effect for SWAP, with MS increasing for several years. A smaller prolonged learning effect may also be present for SAP, counteracting the effects of aging and disease progression. Deterioration of the subject's visual field may be underestimated within this period.


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Testimonials


My eight year old daughter was terrified to go to the eye doctor for fear of her eyes being dilated. The doctor was SO KID friendly! He immediately made her comfortable by engaging her in conversation. It was a geat experience.


Joya B.

Dr. Garbus spent an amazing amount of time to solve my very complicated visual problems. Over the years he has continually achieved results beyond what others felt possible. He is always up to date on the latest science. He is great!


Dolores K.

Family Vision Care Valencia makes it so easy. Staff is knows what they are doing and Dr. Garbus is thorough and kept me well informed during the exam.


Kristy B.

I have been coming to Family Vision Center for almost 20 years. Dr. Garbus has been able to help my vision when other doctors could not. Now my kids see him as well. I highly recommend this office!


Autumn C.

The Doctor is very good. I felt on this visit he seemed rushed. I had questions to ask him but he was already with another patient. I still do not know if my eyes are the same , worse, or better.


Howard B.

All the staff is friendly, helpful and knowledgeable, and has been for all the years I have been going there.


Mary Ann H.
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