A dim white spot usually means the objective lens is stained or eyelashes entered the patient's eye area during alignment. Clean the objective lens, or have the patient open the eye wider and repeat the photograph; if necessary, hold the eyelid open.
Filed under Image quality
The Triton manual separates two causes for a dim white spot. If the objective lens is stained, the remedy is to clean the lens. If eyelashes were in the patient's eye at the moment of photography, the manual links the problem to a dim light seen at the bottom of the screen during alignment; repeat the image with the eye opened wider.
- Check whether the objective lens is stained and clean it according to CLEANING THE OBJECTIVE LENS.
- Ask the patient to open the eye wider.
- Repeat alignment and photography.
- If the eye still does not open wide enough, hold the eyelid open while taking the picture.
Do not treat this as the same problem as a fully flared image. The troubleshooting table gives incorrect alignment or ocular opacity as causes of an image flared all over, whereas the dim white spot has the lens and eyelash remedies above.
