7 Troubleshooting

Symptom

Cause and remedy

 

 

 

The diopter patient's eye is outside the range of –10 to +15 D.

The split lines do not align.

Use the diopter compensation function, turn the focus ring, and

focus on the position where the images of the retina look clear

 

 

at the same time.

 

 

 

The patient's pupil is not dilated enough. Dilate the patient’s

 

pupil. If the pupil is still too small, enable the small pupil

 

photography function.

 

 

 

The retinal camera and the eye are not aligned. Align them

 

correctly.

 

 

 

Focus the image.

 

 

 

Eyebrows or eyelashes are blocking the pupil. Instruct the

Cannot capture good images.

patient to open his/her eye wider.

 

 

 

The patient's eye is cloudy. Clear images cannot be captured if

 

this is the case.

 

 

 

Adjust the flash intensity, patient's diopter, and small pupil

 

photography function.

 

 

 

The objective lens is dirty. Clean the objective lens (see page 35).

 

 

 

The patient is wearing contact lenses. Instruct the patient to

 

remove his/her contact lenses.

 

 

Black spots or any artifacts

There is dirt or dust on the objective lens. Clean the objective

lens (see page 35).

appear in the same place in every

 

Dirt or dust is stuck to the imaging sensor of the digital camera.

captured image.

Use the self-cleaning sensor unit to clean it. (see page 36).

 

 

 

 

The objective lens is dirty. Clean the objective lens (see page 35).

White spots are visible on the

 

The patient's eyelashes are interfering with the image. Instruct

captured image.

the patient to open his/her eye wider, and capture another

 

image.

 

 

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