Low degree of mixed astigmatism

If the retina is placed at the ” Circle of least diffusion” of Strum’s conoid, the distant vision is often found to be surprisingly good with a relatively high degree of mixed astigmatism.

During refractions at the last steps of subjective verification if that mixed astigmatism remains at a low degree then the distant vision might be maximum or nearer to the maximum.
As for example +0•25 Dcyl. ➡️ 180° with -0•25 Dcyl. ⬇️ 90°

here the above-mentioned things happened.
If such a low degree of mixed astigmatism won’t be corrected, the patient may experience fatigue eyes, eye ache, and headache.
That’s why a low degree of mixed astigmatism must be corrected. In that correction, the JCC device or JCC principles play an important role.

Gobinda Chandra Mondal

Founder & Advisor at Optography, 47+ years experienced Optometrist Faculty of Optometry Teaching at Eye Care Research Center, Kolkata, West Bengal

Leave a Reply

This Post Has 4 Comments

  1. Swarnali Pal

    It is very useful and informative. Want to know more about JCC

  2. Manisha Maity

    Thanks for supporting us… Please explain with JCC. And explain more about astigmatism.

  3. Mahmudul Hasan