Corneal Densitometry for Early and Long-Term Evaluation of Surgical Outcomes After Phototherapeutic Keratectomy for Granular, Macular, and Lattice Corneal Dystrophy

PTK effectively improves BCVA and corneal transparency in GCD, where densitometry provides a useful objective measure. In LCD, densitometry changes are transient and do not clearly reflect functional benefit. In MCD, densitometry has limited value due to diffuse stromal involvement and does not correlate with visual improvement. Overall, corneal densitometry may support preoperative planning and postoperative follow-up in selected dystrophies, with its strongest applicability in GCD.