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To evaluate the influence of superior versus temporal laser peripheral iridotomy location on post-operative visual acuity and contrast sensitivity.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Bilateral iridotomy: Superior | Experimental | Each subject in this single-arm study undergoes bilateral laser peripheral iridotomy surgery. Each participant will undergo superior laser peripheral iridotomy in one eye and temporal laser peripheral iridotomy in the fellow eye. |
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| Bilateral iridotomy: Temporal | Experimental | Each subject in this single-arm study undergoes bilateral laser peripheral iridotomy surgery. Each participant will undergo superior laser peripheral iridotomy in one eye and temporal laser peripheral iridotomy in the fellow eye. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Superior laser peripheral iridotomy | Procedure | Iridotomy placement between 11:00 and 1:00 o'clock |
|
| Measure | Description | Time Frame |
|---|---|---|
| Change in visual acuity | Change from baseline best corrected visual acuity evaluated in number of letters correctly read on the ETDRS chart | 30 days post-operative |
| Measure | Description | Time Frame |
|---|---|---|
| Change in Peli-Robson contrast sensitivity | Change from baseline in contrast sensitivity evaluated in number of letters correctly read on the Peli-Robson chart | 30 days post-operative |
| Change in CSV-1000 contrast sensitivity |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Ana Hagendorf, PhD | Contact | 210-805-3036 | wandless@uiwtx.edu |
| Name | Affiliation | Role |
|---|---|---|
| Richard Trevino, OD | University of the Incarnate Word | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| University of the Incarnate Word | Recruiting | San Antonio | Texas | 78209 | United States |
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| ID | Term |
|---|---|
| D015812 | Glaucoma, Angle-Closure |
| ID | Term |
|---|---|
| D005901 | Glaucoma |
| D009798 | Ocular Hypertension |
| D005128 | Eye Diseases |
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Paired eye
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Subject is masked to which eye has the iridotomy at which location
| Temporal laser peripheral iridotomy | Procedure | Iridotomy placement at 3:00 or 9:00 o'clock |
|
Change from baseline in contrast sensitivity evaluated using the number of correct responses on the CSV-1000 test
| 30 days post-operative |