Moderate cataracts are not relatively serious and the effect on vision may vary from person to person. If the cloudiness of the cataract is concentrated in the periphery, the effect on central vision is usually minor. Although looking at the cataract is more severe, checking your vision will still result in a level of vision such as 0.6 or 0.7, which needs to be decided based on your own experience of visual function. If you feel that you can still see well enough, you can also observe before considering surgery. Cataract surgery can also be considered if one feels that one’s vision is already somewhat blurred, especially at night when there is a white haze. Moderate cataracts can develop over time into severe cataracts, which have a greater impact on vision and may carry a risk of acute glaucoma. Once you have a moderate cataract, try to have it reviewed once a year to determine how it is progressing. Surgery should also be considered if vision loss or severity has worsened, as moderate cataracts may not be as severe.