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Year : 2018  |  Volume : 11  |  Issue : 3  |  Page : 220-226

Incidence and risk factors for postkeratoplasty glaucoma in tertiary care center, India

Department of Ophthalmology, Himalayan Institute of Medical Sciences, Swami Rama Himalayan University, Jolly Grant, Dehradun, Uttarakhand, India

Correspondence Address:
Dr. Anuradha Raj
Department of Ophthalmology, Himalayan Institute of Medical Sciences, Swami Rama Himalayan University, Jolly Grant, Dehradun, Uttarakhand
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ojo.OJO_159_2017

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BACKGROUND: Glaucoma is the leading cause of blindness after penetrating keratoplasty (PK) and its early diagnosis and management is mandatory to salvage the graft. AIMS: This study aimed to evaluate the incidence and risk factors for post penetrating keratoplasty glaucoma (PKG). METHODS: Data of 155 eyes of 155 patients were reviewed retrospectively who underwent PK from March 2013 to February 2016. Data were analyzed from recipient records for recipient age, sex, indications, type of PK, lens status, recipient graft size or any additional procedure. Detailed ophthalmological examination was recorded for all cases including best corrected visual acuity (BCVA), slit lamp examination, intraocular pressure (IOP) by applanation tonometry or tonopen, central corneal thickness (CCT) and gonioscopy. IOP measurement records were reviewed at each visit of one week, two weeks,one, three and six months and if IOP was elevated (>22 mmHg) medical management was initiated. Uncontrolled IOP with antiglaucoma medication (AGM) required surgical management. RESULTS: Overall incidence of raised IOP after PK was 32.25%. Increase in IOP post PK was reported mainly in 32 (64%) among age group >40 years. Raised IOP showed significant association with age group, indications of PK, recipient size and CCT (P value 0.00, 0.01, 0.00, 0.00) respectively. Two weeks after PK 46 (29.67%) patients reported an increase in IOP ,47(30.32 %) after 1 months, 33 (21.29%) at 3 months and 30 (19.35%) at 6 months. In 11 (39.28%) cases cataract was major long term complication seen in PKG cases. 35 (70%) cases of PKG were treated medically and 15 (30%) patients required surgical treatment. CONCLUSION: Subjects with age group >40 years, corneal opacity, increased recepient size and increased CCT are risk factors for PKG. IOP monitoring in early post operative period especially one month after PK is mandatory to avoid graft failure due to PKG which is difficult to diagnose otherwise.

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