Cataract (unilateral)

Unilateral cataracts occur in only one eye. In general the symptoms are the same, but the presentation may be different and there are additional problems. Features are as follows:

• apparent sudden loss of vision after covering the good eye
• gradual loss of vision following trauma. Sometimes this may have seemed trivial at the time for example something flying into the eye, but there may be an intraocular foreign body
• the blurred vision and dazzling may interfere with the good eye
• loss of stereopsis - difficult to judge distances
• squint - this can occur if there was a pre-existing latent deviation