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The effect of Steep Trendelenburg position used during laparoscopic surgery on intraocular pressure during surgery and on the retinal nerve fiber thickness after surgery
To measure IOP and RNFL thickness in subjects undergoing laparoscopic operations in steep trendelenburg before, during, and after the operation
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| IOP and OCT RNFL measurements | Other | all subjects will undergo ophthalmological exams including IOP and RNFL OCT measurements |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| OCT (Optical coherence tomography) | Diagnostic Test | RNFL AND IOP MEASUREMNTS |
|
| Measure | Description | Time Frame |
|---|---|---|
| Intra Ocular Pressure (IOP) | IOP measurement will be taken before, during and after surgery using ICARE tonometer | Change in IOP from baseline to IOP during surgery and to one week and to three months following surgery |
| Retinal Nerve Fiber Layer Thickness (RNFL) using OCT | RNFL measurement will be taken before and after surgery using spectralis OCT | Change in OCT RNFL thickness from baseline to OCT RNFL thickness during surgery and to one week and to three months following surgery |
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Inclusion Criteria:
Exclusion Criteria:
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| ID | Term |
|---|---|
| D041623 | Tomography, Optical Coherence |
| ID | Term |
|---|---|
| D041622 | Tomography, Optical |
| D061848 | Optical Imaging |
| D003952 | Diagnostic Imaging |
| D019937 | Diagnostic Techniques and Procedures |
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| D003933 | Diagnosis |
| D014054 | Tomography |
| D008919 | Investigative Techniques |