Intrastromal cyst in Terrien's marginal degeneration.

A 45-year-old female presented with complaints of gradual progressive diminution of vision in the right eye for 5 years. The best-corrected visual acuity was 2/60 and 6/24 in the right and left eye, respectively. On examination of right eye, there was 360° peripheral thinning (maximum superiorly) with superficial vascularization associated with lipid deposition. [Fig. 1a]. At 11–12 o'clock position, there was an intrastromal cyst with surrounding scarring in the right eye [Fig. 1b-d]. Similar features were seen in the left eye though with less amount of thinning. Thus, she was diagnosed with bilateral Terrien's marginal degeneration.

Figure 1

A case of bilateral Terrien's marginal degeneration with intrastromal cyst. (a) Slit lamp photograph showing 360° peripheral thinning with superficial vascularization and lipid deposition. (b) Slit lamp photograph showing an intrastromal cyst with scarring. (c and d) Corresponding photographs of anterior segment optical coherence tomography showing the intrastromal cyst and peripheral thinning

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