Figure 1

Positions during MRI examination and MRI images in the supine and prone positions. The supine (A) and prone (D) positions during MRI; (B,C,E,F) MRI images of case 5; (B,C) in supine position and (E,F) in prone position. White arrows, white arrow heads, and white open arrow indicate corneal limbus, ora serrata (7.0 mm posterior to the limbus) and equator line (13.5 mm posterior to the limbus), respectively. White open arrow head indicates the ends of the retina contacting with the gas. Black dotteds line indicate the margin of angle and iris. IOL could be observed (*). White solid line, green dot line, and green solid line indicate pupillary axis, horizontal line, and perpendicular line to the ground, respectively. X and Y are the supraduction angle to the perpendicular line in supine and prone position, respectively. The anterior part to the equator is shown as purple and yellow line, which indicates the inferior–anterior and superior–anterior parts of the retina, respectively. The posterior part to the equator is shown as red and blue line. Red and blue lines indicate the inferior–posterior and superior–posterior parts of the retina, respectively.