Agni Purana (Jyotisha Selections) · by Vyasa
Chapter 3 · Name Letters and Chakras
युद्धजयार्णवः (चक्राणि)
नामवर्णैः समैः काणो वामेऽक्ष्णि विषमैः पुनः ।दक्षिणाक्षि भवेत्काणं स्त्रीपुंनामाक्षरस्य च ॥ ३ ॥
In the full Agni Purana this is chapter 142, verse 3.
If the letters of the name are even, he is blind in the left eye. If odd, he is blind in the right eye. This holds for a woman's or a man's name.
Simple meaning: An even letter count in a name shows blindness in the left eye and an odd count shows the right eye.
Classical view, not medical advice.
मात्रावर्णाश्चतुर्निघ्ना वर्णपिण्डे गुणे कृते ।
Multiplying the name's counts gives even for a woman and odd for a man. In a special case, a woman may die.
प्रथमं रूपशून्येऽथ प्रथमं म्रियते पुमान् ।
If the count leaves nothing, the man dies first. The question is read from the fine letters.
शनिचक्रं प्रवक्ष्यामि तस्य दृष्टिं परित्यजेत् ।
In the Shani chakra, avoid Saturn's look. He looks at the 7th, and more strongly at the 4th and 10th.