研究目的
To propose an anamnestic add-on for optimizing the choice of intraocular lens (IOL) in cataract surgery by analyzing patients' visual behavior through automatic photographic documentation.
研究成果
The study demonstrates that automatic photographic analysis of visual behavior can provide valuable insights into the frequency of near, intermediate, and far sight usage in cataract patients, aiding in personalized IOL selection. It highlights the importance of individual patient needs and suggests potential for customized IOL manufacturing. Future improvements could involve eye-level devices for more accurate documentation.
研究不足
The camera was not positioned at eye level, making it unclear what object the patient was looking at in some situations. Some patients were on vacation, so records did not reflect typical working days. Difficulty in standardizing camera height and evaluating activities involving multiple sight types (e.g., driving). Patients require good cognitive function to follow guidance. The method may not provide accurate distance measurements or pupil diameter data, which are important for IOL choice.
1：Experimental Design and Method Selection:
The study used a Narrative Clip camera to automatically take pictures at 30-second intervals to document patients' visual routines. The design aimed to classify visual activities into near, intermediate, and far sight categories based on photographic records.
2：Sample Selection and Data Sources:
Four functionally independent, mentally unimpaired patients with senile cataract who had undergone cataract surgery were selected. Patient information and daily activity reports were collected as a database.
3：List of Experimental Equipment and Materials:
Narrative Clip camera (dimensions: 36 × 36 × 9 mm; weight: 20 g; capacity: 6000 photographs; image-capture frequency: 30 sec; resolution: 5 megapixels; battery life: 2 days).
4：Experimental Procedures and Operational Workflow:
Patients wore the camera attached to their shirt collar for one day, instructed to point it towards observed objects. Photographs were taken automatically every 30 seconds. Every 10 records (at 5-minute intervals) were selected for analysis. The team classified each photograph into near (0-1 m), intermediate (1-4 m), or far sight (>4 m) categories, and patients confirmed classifications during evaluation. Proportions of time spent in each sight category were calculated.
5：Data Analysis Methods:
The proportion (%) of time for each sight category was estimated based on the number of photographs in each classification versus the total selected. Results were analyzed per patient to assess visual behavior.
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