Does Using a Low Vision Aid Device Improve Quality of Life in Glaucoma Patients?
| Status: | Completed |
|---|---|
| Conditions: | Ocular |
| Therapuetic Areas: | Ophthalmology |
| Healthy: | No |
| Age Range: | 18 - Any |
| Updated: | 12/15/2018 |
| Start Date: | May 2014 |
| End Date: | August 2015 |
The Impact of a Novel Artificial Vision Device (OrCam) on the Quality of Life of Patients With Advanced Glaucoma
To determine the impact of OrCam over 1 month on health-related quality of life (HRQoL) in
subjects with advanced glaucoma using the National Eye Institute Visual Function
Questionnaire 25 (NEI-VFQ-25).
To identify tasks for which subjects are using the OrCam device and patient satisfaction.
subjects with advanced glaucoma using the National Eye Institute Visual Function
Questionnaire 25 (NEI-VFQ-25).
To identify tasks for which subjects are using the OrCam device and patient satisfaction.
Participants will document their daily impression about the use of OrCam, a small camera
attached to their glasses over a 1-month period. They will attend 2 appointments at Wills Eye
Hospital Glaucoma Research Center (baseline and final visit). Participant's will be trained
to use the OrCam device at baseline visit and complete a best-corrected visual acuity
assessment ETDRS (early treatment diabetic retinopathy study) and the NEI-VFQ-25
questionnaire. They will also read a short newspaper article.
The NEI-VFQ-25 includes a series of 25 questions pertaining to vision or feelings about a
vision condition. Answers are selected among a numbered list of possible responses, the
values of which are ultimately recoded and converted to a 0 to 100 scale. Items within each
subscale are averaged together to create 12 subscale scores. An overall composite score will
be calculated by averaging vision-targeted subscale scores, excluding the general health
rating question.
Participants will read a short article. They will be asked to grade their reading difficulty
between 1 (unable to read) to 10 (able to read without difficulty). Time to read article will
be recorded. Reading task will be performed with best correction - with and without the
assistance of the OrCam device.
Subjects will utilize OrCam daily for one month. Each week, subjects will record thoughts
about the device in a log book or by using audio tape recorder, according to patient's
personal preference.
Final assessment at 1 month will include best-corrected visual acuity (ETDRS), NEI-VFQ-25,
and the newspaper-reading task with and without OrCam assistance. A satisfaction
questionnaire will be completed in order to assess subjects' overall feelings regarding
OrCam. Audio log books will be analyzed for specific factors and recorded by a research
assistant.
attached to their glasses over a 1-month period. They will attend 2 appointments at Wills Eye
Hospital Glaucoma Research Center (baseline and final visit). Participant's will be trained
to use the OrCam device at baseline visit and complete a best-corrected visual acuity
assessment ETDRS (early treatment diabetic retinopathy study) and the NEI-VFQ-25
questionnaire. They will also read a short newspaper article.
The NEI-VFQ-25 includes a series of 25 questions pertaining to vision or feelings about a
vision condition. Answers are selected among a numbered list of possible responses, the
values of which are ultimately recoded and converted to a 0 to 100 scale. Items within each
subscale are averaged together to create 12 subscale scores. An overall composite score will
be calculated by averaging vision-targeted subscale scores, excluding the general health
rating question.
Participants will read a short article. They will be asked to grade their reading difficulty
between 1 (unable to read) to 10 (able to read without difficulty). Time to read article will
be recorded. Reading task will be performed with best correction - with and without the
assistance of the OrCam device.
Subjects will utilize OrCam daily for one month. Each week, subjects will record thoughts
about the device in a log book or by using audio tape recorder, according to patient's
personal preference.
Final assessment at 1 month will include best-corrected visual acuity (ETDRS), NEI-VFQ-25,
and the newspaper-reading task with and without OrCam assistance. A satisfaction
questionnaire will be completed in order to assess subjects' overall feelings regarding
OrCam. Audio log books will be analyzed for specific factors and recorded by a research
assistant.
Inclusion Criteria:
- Glaucoma any type, characterized by glaucomatous optic neuropathy and corresponding
visual field (VF) defect
- Visual acuity of 20/400 to hand motion (HM) in better eye or visual field less than 10
degrees in better eye and having difficulty reading.
- Age 18 years or older
- Able to understand and speak English
- Able to use an electronic recording device
- Able to operate a computerized system
Exclusion Criteria:
- Neurological or musculoskeletal problems that would influence performance on
activities of daily living
- Incisional eye surgery within past three months
- Laser therapy within previous month
- Any cause for visual impairment other than glaucoma
- Photophobia
- Any medical condition precluding subject from providing reliable, valid data
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