Lying down looking down test: Evaluating patient suitability for small incision cataract surgery using assisted...

Area of Science:

• Ophthalmology
• Surgical Anesthesia Techniques
• Patient Assessment

Background:

• Manual small incision cataract surgery (MSICS) can be performed under assisted topical anesthesia (ATA).
• Accurate patient selection is crucial for the success of ATA.
• A reliable preoperative assessment tool is needed to determine suitability for ATA.

Purpose of the Study:

• To evaluate the Lying down looking down (LDLD) test for assessing patient suitability for ATA during MSICS.
• To compare the outcomes of ATA with assisted local anesthesia (ALA).

Main Methods:

• The LDLD test was performed preoperatively on 250 patients.
• The test involves assessing downward gaze, eye squeezing, and withdrawal reflexes with the patient lying down.
• Statistical analyses (Chi-square, Fisher's exact tests) were used to determine the association between LDLD results and ATA suitability, calculating positive predictive value and specificity.

Main Results:

• A positive LDLD test was significantly associated with successful ATA (P=0.002).
• The LDLD test demonstrated high positive predictive value (92.56%) and specificity (93.48%) for ATA suitability.
• Fewer complications, such as congestion and corneal edema, were observed in the ATA group compared to the ALA group.

Conclusions:

• The LDLD test is a simple, highly specific, outpatient department-based method for determining patient suitability for MSICS under ATA.
• The LDLD test can aid in optimizing patient selection for ATA, potentially improving surgical outcomes and patient comfort.