Lattice degeneration in myopia and its relation with axial length and grades of myopia: A Prospective study

Abstract

Aim: Tostudy the prevalence of lattice degeneration in patients with myopia and its relation with
axial lengthand grades of myopia.
Methods:305 myopic patients (610eyes) were included in the study. Visual acuityassessment ,
slit lamp examination, axial length measurement, and indirect ophthalmoscopy with scleral
indentation was performed for all the patients with proper consent.
Results: 26 patients (8.52%) were found to have lattice retinal degeneration,out of which 10
(38%) were males and 16 (62%) were females. Highest incidence of lattice degeneration was
seen in the age group of 20-40years(n= 15, 57.7%).Frequency of peripheral lattice degeneration
increases with the increasing severity of myopia (p<0.001). The highest incidence(42.45%)of
lattice degeneration was observed in eyes with axial length between 28.01- 32mm. Increasing
axial length was significantly associated with theincrease in prevalenceof lattice degeneration
(p<0.001). Bilateral lattice degeneration was found in 61.5 % cases while it was unilateral in
38.5% cases . Atrophic holes within lattice were seen in 3(11.5%) patients. 88.46% of lattice
lesions were found in temporal retina, of which 65.38% were seen in infero-temporal retina.
Conclusion: Prevalence of lattice degeneration was higher among patients with high myopia and
high axial length. Bilateral lattice degeneration was more common than unilateral lattice
degeneration. Though less commonly seen, still lattice degeneration is not uncommon among
low myopes. Therefore, while seeing patients with myopia,we should have high index of
suspicion for lattice even in patients with low myopia.