ALAN Carr has revealed he had a terrifying ‘health scare’ resulting in his eyeballs needing draining, amid fears he is losing ...

Toric contact lenses, which may be rigid or soft, are needed for moderate astigmatism. They are designed to compensate for ...

In addition, meridian changes over the entrance pupil and irregular astigmatism may be missed. Using the IOLMaster® (Carl Zeiss Meditec, CA, USA) for corneal curvature measurements can result in ...

Astigmatism occurs when the cornea—the transparent front surface of the eye—has an irregular shape, resembling a football rather than a perfectly round basketball. This uneven curvature causes light ...

The power of each meridian is successive as the meridians travel 180 degrees. Astigmatism that does not show symmetry or otherwise conform to a geometric appearance is irregular.

Types of astigmatism There are two types of astigmatism, regular and irregular. Irregular astigmatism is often caused by a corneal scar or "scattering" in the eye’s crystalline lens. While this ...