Question

Ophthalmologists use ishihara charts for detecting

• A. Fingerprints
• B. Eye infections
• C. Night blindness
• D. Color blindness.

Answer 1

The correct option is D

Color blindness.

The correct option is D.

Explanation of the correct option:

1. Ophthalmologists are doctors who specialize in the field of medicine that deals with the study and treatment of eye abnormalities and illnesses.
2. Ophthalmologists utilize Ishihara charts to diagnose color blindness disorders.
3. In this test, there are a total of 38 plates of circles, which are created by irregular colored dots using two or more colors.
4. During this diagnosis, patients are asked to identify the number on a plate.
5. The most prevalent types of color blindness are hereditary or inherited from one's parents.
6. If color blindness is inherited, then neither our color vision nor its sensitivity will change over time.

Explanation of the incorrect options:

Option A:

1. A human fingerprint contains remnants of different substances and their metabolites that are present in the body, including secretions, skin oils, and dead cells.
2. These are detectable and useful in forensic investigations.
3. Some experts think that fingerprints might shield our fingers or heighten our sense of touch.

Option B:

1. Eye infections can be caused by a variety of circumstances, including dirty hands touching the eyes, not cleansing the eyes regularly, or bacteria.

Option C:

1. Eyesight problems can also be caused by poor dietary habits.
2. Night blindness is caused by vitamin A deficiency, for example.
3. Night blindness prevents a person from seeing in dim light.

Final answer: Ophthalmologists use Ishihara charts for detecting color blindness.