Images created in a model eye during simulated cataract surgery can be the basis for images perceived by patients during cataract surgery.
OBJECTIVE
To evaluate the images created in a model eye during simulated cataract surgery.


METHODS
This study was conducted as a laboratory investigation and interventional case series. An artificial opaque lens, a clear intraocular lens (IOL), or an irrigation/aspiration (I/A) tip was inserted into the 'anterior chamber' of a model eye with the frosted posterior surface corresponding to the retina. Video images were recorded of the posterior surface of the model eye from the rear during simulated cataract surgery. The video clips were shown to 20 patients before cataract surgery, and the similarity of their visual perceptions to these images was evaluated postoperatively.


RESULTS
The images of the moving lens fragments and I/A tip and the insertion of the IOL were seen from the rear. The image through the opaque lens and the IOL without moving objects was the light of the surgical microscope from the rear. However, when the microscope light was turned off after IOL insertion, the images of the microscope and operating room were observed by the room illumination from the rear. Seventy percent of the patients answered that the visual perceptions of moving lens fragments were similar to the video clips and 55% reported similarity with the IOL insertion. Eighty percent of the patients recommended that patients watch the video clip before their scheduled cataract surgery.


CONCLUSIONS
The patients' visual perceptions during cataract surgery can be reproduced in the model eye. Watching the video images preoperatively may help relax the patients during surgery.
1] Kyorin Eye Center, Kyorin University School of Medicine, Tokyo, Japan [2] Department of Ophthalmology, Tokyo Dental College Suidobashi Hospital, Tokyo, Japan.
M
M
Inoue
Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan.
A
A
Uchida
Department of Ophthalmology, Teikyo University School of Medicine, Tokyo, Japan.
K
K
Shinoda
Ryuundo Eye Clinic, Saitama, Japan.
Y
Y
Taira
Department of Ophthalmology, National Hospital Organization Tokyo Medical Center, Tokyo, Japan.
T
T
Noda
Department of Medical System Engineering, Faculty of Engineering, Chiba University, Chiba, Japan.
K
K
Ohnuma
Department of Ophthalmology, Tokyo Dental College Suidobashi Hospital, Tokyo, Japan.
H
H
Bissen-Miyajima
Kyorin Eye Center, Kyorin University School of Medicine, Tokyo, Japan.
A
A
Hirakata
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002386:Cataract / Q000473:pathology*; D006801:Humans; D019654:Lens Implantation, Intraocular; D008875:Middle Aged; D008954:Models, Biological; D018918:Phacoemulsification; D011446:Prospective Studies; D012160:Retina / Q000502:physiology*; D011795:Surveys and Questionnaires; D014741:Video Recording; D014788:Vision, Entoptic / Q000502:physiology*; D014796:Visual Perception / Q000502:physiology*