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Fig. 1 | BMC Ophthalmology

Fig. 1

From: Effects of excimer laser phototherapeutic keratectomy in limbal-conjunctival autograft transplantation for recurrent pterygium: a retrospective case control study

Fig. 1

Corneal topography changes before and after recurrent pterygium excision and PTK treatment. A50-year-old female suffering from recurrent pterygium in her left eye with prominent irregular astigmatism (a). Two weeks after surgical excision and PTK treatment, a relatively smooth corneal surface with significant reduction in cylinder was found on corneal topography (b). PTK: excimer laser phototherapeutic keratectomy

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BMC Ophthalmology

ISSN: 1471-2415

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